Hubble has a long history of encouraging and facilitating multi-wavelength science through its joint observing programs. Since Cycle 9 of HST in the year 2000, scientists thinking about multi-wavelength projects with Hubble have been able to propose for an expanding list of facilities that now spans the Chandra X-ray Observatory, NOIRLab telescopes, Spitzer, XMM-Newton, and NRAO telescopes. This science is often more than the sum of its parts, and enables time-domain and synergistic astrophysics studies not possible with the traditional double-jeopardy approach to arranging observing campaigns. Almost 4000 HST orbits in about 350 joint observing programs have been awarded since the inception of the joint observing program framework, equivalent to more than a year's worth of Hubble observations.

The links below give bibliographical information related to each accepted program. The planned orbit counts may not be completely accurate especially for multi-cycle programs.

These tables are compiled on the fly and may take a few seconds to load. Click on column heading to sort.

First Cycle for the Program	Proposal Number(s)	Observatory	Title	PI	Planned External Orbits*	Planned Parallel Orbits*	Number of Refereed Papers Associated with Program
31	17522 17845	NRAO	Betelgeuse: The Great Dimming Redux?	Dupree, Andrea	24	0	0
31	17521	JWST	A multiwavelength study of protoplanetary disk ionization	Espaillat, Catherine	6	0	0
31	17521	CHANDRA	A multiwavelength study of protoplanetary disk ionization	Espaillat, Catherine	6	0	0
31	17509	JWST	Winging the SMC: 3D Structure of the Interstellar Medium in the Tidally Distrupted Wing of the SMC	Lindberg, Christina Willecke	15	0	0
31	17503	XMM	Hot Rock Stars: Capturing high-energy spectra of 5 M dwarfs hosting terrestrial exoplanets that JWST will test for atmospheres	Diamond-Lowe, Hannah	47	0	0
31	17474	JWST	Pioneering Precision: Advancing Cosmology with the First Statistical Sample of Gravitationally Lensed Supernovae	Pierel, Justin	45	0	0
31	17473	JWST	Moving beyond the Milky Way: Enabling Cross-Observatory Proper Motion Determinations with HST and JWST	Warfield, Jack Thomas	8	0	0
31	17472 17840	JWST	Gamma-ray burst supernovae across cosmic time	Levan, Andrew James	42	0	0
31	17472 17840	NOIRLab	Gamma-ray burst supernovae across cosmic time	Levan, Andrew James	42	0	0
31	17471	JWST	Elucidating Jupiter's auroral processes with HST and JWST	Nichols, Jonathan David	6	0	0
31	17470	JWST	HST-Juno Io Campaign: Connecting Volcanos to the Plasma Environment	Retherford, Kurt David	122	0	0
31	17453	CHANDRA	Activity at the Edge	Ayres, Thomas R.	17	0	0
31	17447	XMM	Joint HST+XMM time-resolved UV+X-ray observations of a quasi-periodically erupting X-ray source	Wevers, Thomas	10	0	0
30	17222	NRAO	WD Periastron Passage in the R Aqr System: Zooming on the New Ejecta and Jet	Karovska, Margarita	6	0	0
30	17222	CHANDRA	WD Periastron Passage in the R Aqr System: Zooming on the New Ejecta and Jet	Karovska, Margarita	6	0	0
30	17201	CHANDRA	Determining the High-Energy Emission Mechanism in Extragalactic Jets with HST	Meyer, Eileen T	13	0	0
30	17192 17414	TESS	The SPACE Program: a Sub-neptune Planetary Atmosphere Characterization Experiment	Kreidberg, Laura	205	0	0
30	17115	NRAO	The Circumgalactic Medium of Dwarf Galaxy Pairs	Bowen, David V.	96	0	0
29	16775 17001 17581	XMM	The Last Gasp of the TDE Wind	Maksym, Walter Peter	71	0	0
29	16728	NRAO	Physical diagnostics of AGN feedback from the first spatially resolved UV spectra of a jet-driven AGN outflow	Johnson, Sean	4	0	0
29	16722	XMM	An HST exclusive look at two rising stars: high-energy spectra of the two closest M dwarfs to host transiting terrestrial exoplanets	Diamond-Lowe, Hannah	15	0	0
29	16701	Chandra	Essential Ultraviolet Stellar Characterization for Cycle 1 JWST Transiting Planet Targets	Youngblood, Allison	110	0	1
29	16701	XMM	Essential Ultraviolet Stellar Characterization for Cycle 1 JWST Transiting Planet Targets	Youngblood, Allison	110	0	1
29	16655 16984	NRAO	Betelgeuse: An Iconic and Surprising Red Supergiant	Dupree, Andrea	40	0	1
28	16318	NOIRLab	The First Measurement of the Distribution of Quasar Lifetimes with the HeII Proximity Effect	Worseck, Gabor	32	0	0
28	16312	NRAO	EFFECTS OF RECENT PERIASTRON PASSAGE AND ECLIPSE IN THE SYMBIOTIC SYSTEM R AQR	Karovska, Margarita	5	0	0
28	16312	Chandra	EFFECTS OF RECENT PERIASTRON PASSAGE AND ECLIPSE IN THE SYMBIOTIC SYSTEM R AQR	Karovska, Margarita	5	0	0
28	16275	XMM	Compact binary mergers: R-process kilonovae and ultra-relativistic jets	Tanvir, Nial Rahil	18	0	1
28	16238	NOIRLab	Measuring the Effect of Progenitor Metallicity on Type Ia Supernova Distance Estimates	Foley, Ryan	12	0	0
28	16219	NRAO	Exploring the origin of the M31-M33 filament	Barger, Kat A	12	0	0
28	16197	Chandra	Chromosopheric and Coronal Activity in the Lowest-Mass Stars	Pineda, John Sebastian	33	0	0
28	16196	Chandra	Mapping Gas Flows in AGNs by Reverberation	Kriss, Gerard A.	198	0	7
28	16166	Chandra	MUSCLES Extension for Atmospheric Transmission Spectroscopy: Essential Ultraviolet Stellar Characterization for Guaranteed JWST Transiting Planet Targets	France, Kevin	57	0	3
28	16166	XMM	MUSCLES Extension for Atmospheric Transmission Spectroscopy: Essential Ultraviolet Stellar Characterization for Guaranteed JWST Transiting Planet Targets	France, Kevin	57	0	3
27	15924	NRAO	A case study for JWST: Disentangling auroral and cloud variability in early L dwarfs	Vos, Johanna	16	0	0
27	15889 16234	NOIRLab	Supernovae in the Infrared avec Hubble	Jha, Saurabh W.	77	0	3
27	15887	NRAO	The Nature and Origin of Compact High-Velocity Clouds	Fox, Andrew J.	33	0	0
27	15876	NOIRLab	Ultra-Rapid UV Spectroscopy of an Interacting Supernova Discovered by TESS	Foley, Ryan	19	0	1
27	15844	Chandra	Monsters in the making: extreme cluster mergers at z>0.5	Ebeling, Harald	29	0	1
27	15825	XMM	The evolving magnetic lives of young Suns	Soderblom, David R.	10	0	2
26	15641 15873 16216	NRAO	Focus on Betelgeuse	Dupree, Andrea	36	0	3
26	15636	XMM	What is on the black hole menu? Joint HST/COS and XMM/EPIC spectroscopy of the X-ray binary M33 X-7.	Oskinova, Lidia	12	0	1
25	15351 15517	XMM	Continued Long-Term Ultraviolet Spectroscopy of a Tidal Disruption Event at only 90 Mpc	Maksym, Walter Peter	16	0	0
25	15350	CHANDRA	Resolved BPT Mapping of Nearby AGN	Maksym, Walter Peter	19	0	4
25	15331	NOIRLab	Multi-Wavelength Spectroscopy of Tidal Disruption Flares: A Legacy Sample for the LSST Era	Cenko, Stephen Bradley	70	0	2
25	15195	NOIRLab	The Baryon Reservoirs in Ultra Diffuse Galaxies (UDGs)	Bowen, David V.	23	0	0
25	15189	XMM	Post Common Envelope Binaries as probes of M dwarf stellar wind and habitable zone radiation environments	Wilson, David John	12	0	2
25	15165	CHANDRA	Connecting mass accretion and ejection in pre-main sequence stars	Espaillat, Catherine	6	0	3
25	15128	XMM	Inner Disk Structure and Transport Mechanisms in the Transitional Disk around T Cha	Brown, Alexander	15	0	2
25	15123	CHANDRA	Probing the accretion flow and emission-line regions of M81, the nearest broad-lined low-luminosity AGN	Barth, Aaron J.	8	0	1
25	15083	NOIRLab	Star Clusters in Tidal Debris: A UV Survey of Stellar Populations, Galaxy Interactions, and Evolution	Rodruck, Michael	12	2	2
25	15071	CHANDRA	The Mega-MUSCLES Treasury Survey: Measurements of the Ultraviolet Spectral Characteristics of Low-mass Exoplanetary Systems	Froning, Cynthia Suzanne	157	0	8
24	14740	SPITZER	Exploring a Massive Starburst in the Epoch of Reionization	Marrone, Daniel	5	0	3
24	14732	CHANDRA	2MASS J00423991+3017515: An AGN On The Run?	Hogg, James Andrew	3	0	1
24	14700	SPITZER	Light Echoes and the Environments of SNe 2014J and 2016adj	Sugerman, Ben E. K.	12	0	4
24	14696	CHANDRA	The Physics of the Jets of Powerful Radio Galaxies and Quasars	Perlman, Eric S.	13	0	2
24	14652	SPITZER	Super-Eight: The brightest z~8 Galaxies	Holwerda, Benne Willem	16	0	5
24	14642	SPITZER	A Preparatory Program to Identify the Single Best Transiting Exoplanet for JWST Early Release Science	Stevenson, Kevin	8	0	7
24	14619	SPITZER	Characterising the atmosphere of a uniquely low-density, sub-Saturn mass planet	Spake, Jessica	15	0	4
24	14602	NRAO	The Perseus Project: Probing Metal Mixing, Dust Destruction, and Kinematics in the Vertical Extension of the Perseus Arm	Howk, Jay Christopher	13	0	0
24	14483	XMM	XMM and HST Target of Opportunity Observations of Tidal Disruption Events	Levan, Andrew James	3	0	1
24	14481	XMM	Shining light on obscured AGN outflows	Kaastra, Jelle	4	0	5
24	14480	XMM	Joint XMM-Newton and HST study of the magnetic weak-wind O-star HD 54879	Hamann, Wolf-Rainer	1	0	2
24	14479	XMM	The global view of the ionized outflows in NGC 4051	Costantini, Elisa	4	0	0
24	14477	XMM	UV to hard X-ray spectroscopy of the prototype disk wind quasar, PDS 456	Reeves, James N.	2	0	1
24	14476	XMM	A collision reversal in HD 5980	Naze, Yael	2	0	3
23	14456	SPITZER	Determining the Role of Merging in the Growth of the Galaxy Cluster Population in the Massive and Distant Clusters of WISE Survey	Brodwin, Mark	12	0	2
23	14455	SPITZER	Orbit and Atmospheric Composition of the Warm Sub-Saturn EPIC-2037b	Petigura, Erik	9	0	1
23	14453	SPITZER	The Nature of 55 Cancri e	Dragomir, Diana	16	0	0
23	14365	CHANDRA	Is Muzzio 10 The Ex-Companion Star of the PSR B1509-58 Progenitor?	Xue, Zhichao	2	0	0
23	14364	CHANDRA	PSR J2124-3358: A Unique, Isolated MSP/PWN/Bowshock	Romani, Roger	2	0	2
23	14362	CHANDRA	Searching for Fossil Group Progenitors Via Strong Gravitational Lensing	Johnson, Lucas	9	0	3
23	14361	CHANDRA	Tales of tails: the Coma episodes	Sun, Ming	3	1	2
23	14360	CHANDRA	AGN Termination Shocks: Feedback In Action	Elvis, Martin	2	0	1
23	14359	CHANDRA	N103B: A Type Ia Remnant with Circumstellar Interaction... Kepler's Older Cousin?	Williams, Brian	5	0	5
23	14358	CHANDRA	Extremely Luminous Dusty Quasars with Unobscured UV Emission: Dual AGN or Extreme Single AGN Systems?	Assef, Roberto	3	0	4
23	14357	CHANDRA	Identify the signature of neutron star mergers through rapid Chandra/Hubble observations of a short GRB	Troja, Eleonora	9	0	5
23	14356	CHANDRA	Multiwavelength Characterization of Candidate Black Holes in Nearby Dwarf Galaxies	Plotkin, Richard M.	3	0	2
23	14353	CHANDRA	The Astrophysics of the Most Energetic Gamma-Ray Bursts	Fruchter, Andrew S.	11	0	4
23	14352	CHANDRA	Deep X-ray Observations of 3 exceptional high-z clusters of galaxies	Hlavacek-Larrondo, Julie	8	0	4
23	14351	CHANDRA	The Black Hole Population in Galactic Globular Clusters	Chomiuk, Laura	2	0	2
23	14350 14789 15327	CHANDRA	Procyon: New Candidate for the Dynamo Clinical Trial	Ayres, Thomas R.	12	0	3
23	14349	CHANDRA	The High-Energy Environs of the Anomalous Coronal Source Alpha Persei	Ayres, Thomas R.	4	0	2
23	14347	NRAO	Joint VLA and HST Observations of Brown Dwarf Aurorae	Pineda, John Sebastian	5	0	0
23	14341	CHANDRA	Alpha Centauri at a Crossroads	Ayres, Thomas R.	4	0	2
23	14331	XMM	The first mass and angular momentum loss measurements for a CV-like binary	Drake, Jeremy J.	1	0	0
23	14329	CHANDRA	Joint Chandra and HST Monitoring and Studies of the Crab Nebula	Weisskopf, Martin C.	4	0	1
23	14272 14812	XMM	Long-Term Ultraviolet Spectroscopy of a Tidal Disruption Event at only 90 Mpc	Maksym, Walter Peter	22	0	0
23	14266	SPITZER	Confirming NGC6946 BH1 - A Black Hole Formed in a Failed Supernova	Kochanek, Chris S.	2	0	6
23	14230	SPITZER	The Ultimate Emission Line Diagnostics Study at z=1.4	Rigby, Jane R.	20	0	3
23	14205	SPITZER	Early Quiescent Galaxies Under the Magnifying Glass	Newman, Andrew B.	4	0	3
23	14188	SPITZER	Exometeorology: Characterizing Weather on a Young Free-Floating Planet	Biller, Beth	5	0	1
23	14180	XMM	The wind of ksi Per: a tomographic view of stellar wind dynamics	Massa, Derck L.	11	0	1
23	14176	XMM	Measuring Absolute Abundances in NGC 5548 and Definitively Linking the UV and X-ray Outflows	Kriss, Gerard A.	9	0	0
23	14091	NOIRLab	Bulge structure and kinematics in an extreme spiral galaxy hosting megaparsec-scale radio jets.	Barth, Aaron J.	2	0	2
23	14060	XMM	A huge ULX bubble in NGC 5585	Soria, Roberto	5	0	2
23	14059	XMM	State transitions of the ULX in M83	Soria, Roberto	3	0	2
23	14057	XMM	Changes in the X-ray irradiation of an ultraluminous X-ray source	Grise, Fabien	8	0	3
23	14054	XMM	Tracking Down the Ionized Outflow of NGC 7469	Behar, Ehud	14	0	1
22	14052	SPITZER	A Spitzer/HST Case Study of Weather on a Y Dwarf	Cushing, Michael C.	14	0	0
22	14051	SPITZER	Constraining Dust Hazes at the L/T Transition via Variability	Radigan, Jacqueline	6	0	1
22	14050	SPITZER	Exploring the Frontiers of Exoplanet Atmosphere Dynamics with NASA's Great Observatories	Kreidberg, Laura	31	0	14
22	14049	SPITZER	Dust to Dust: Monitoring the Evolution of the New Class of Self-Obscured Transient	Kochanek, Chris S.	4	0	1
22	14048	SPITZER	Exploring the Dust-Gas Connection in the Protoplanetary Disk of GM Aur	Espaillat, Catherine	4	0	3
22	14047	NRAO	Confirming the AGN in a Low-Metallicity Dwarf Galaxy with the HSA and HST	Reines, Amy E.	2	0	4
22	14046	NRAO	Testing for a Recoiling Supermassive Black Hole in the Giant Core of BCG 2261	Burke-Spolaor, Sarah	8	0	2
22	14045	NRAO	Longitude-resolved maps of Uranus's radio emission	de Pater, Imke	2	0	2
22	14044	NRAO	Longitude-resolved maps of Neptune's radio emission	de Pater, Imke	2	0	5
22	13951	CHANDRA	The Burst of the Century	Fruchter, Andrew S.	5	0	1
22	13950	CHANDRA	The Astrophysics of the Most Energetic Gamma-Ray Bursts	Fruchter, Andrew S.	11	0	1
22	13949	CHANDRA	A Chandra/HST survey of dark gamma-ray bursts	Levan, Andrew James	4	0	4
22	13948	CHANDRA	CONSTRAINING THE WIND-SHIELD SCENARIO OF PG 2112+059	Saez, Cristian	2	0	1
22	13947	CHANDRA	An X-ray, UV, and radio probe of the PG 1211+143 inflow-outflow dynamics	Lee, Julia C.	4	0	3
22	13946	CHANDRA	The very unusual gamma-ray source PMNJ1603-4904 and its neighbors	Ojha, Roopesh	1	0	1
22	13945	CHANDRA	Solving the X-ray Origin Problem in Large-scale Jets with Chandra and Fermi Observations	Meyer, Eileen T	4	0	3
22	13944	CHANDRA	Extended X-ray Emission From A Quasar-Driven Superbubble	Greene, Jenny Emma	1	0	3
22	13943	CHANDRA	Probing the Growth of Massive Black Holes in Dwarf Galaxies with Chandra and HST	Reines, Amy E.	8	0	4
22	13942	CHANDRA	Does the IMF vary with galaxy mass? The X-ray binary population of a key galaxy, NGC7457	Peacock, Mark B.	2	0	4
22	13941	CHANDRA	IDENTIFY THE SIGNATURE OF NEUTRON STAR MERGERS THROUGH RAPID CHANDRA/HUBBLE OBSERVATIONS OF A SHORT GRB	Troja, Eleonora	4	0	1
22	13940	CHANDRA	X-RAYS FROM GREEN PEA ANALOGS	Brorby, Matt	2	0	3
22	13939	CHANDRA	The nature of the transient X-ray binary Swift J1910.2-0546	Miller, Jon Matthew	2	0	1
22	13938 14341 14788	CHANDRA	Alpha Centauri at a Crossroads	Ayres, Thomas R.	12	0	3
22	13815	XMM	Early evolution of AGN X-ray coronae and the X-ray, BLR, disc-wind connection	Miniutti, Giovanni	3	0	3
22	13814	XMM	The rise of an ionized outflow in the X-ray and UV spectra of the NLS1 Mrk 335	Longinotti, Anna Lia	7	0	3
22	13813	XMM	Mapping the Broad-band Spectrum of a New Candidate Intermediate Mass Black Hole	Farrell, Sean A.	3	0	1
22	13812	XMM	Tomography of the innermost regions of NGC 985	Ebrero, Jacobo	10	0	2
22	13811	XMM	Feedback in action in the type 1 Seyfert IZw 1	Costantini, Elisa	8	0	1
22	13754 14331 14702	XMM	The first mass and angular momentum loss measurements for a CV-like binary	Drake, Jeremy J.	6	0	0
22	13711	NOIRLab	Establishing a Network of Next Generation SED standards with DA White Dwarfs	Saha, Abhijit	60	60	5
22	13653	NOIRLab	Elementary Abundances of Planetary Systems	Griffith, Caitlin Ann	12	0	0
22	13650	XMM	The MUSCLES Treasury Survey: Measurements of the Ultraviolet Spectral Characteristics of Low-mass Exoplanetary Systems	France, Kevin	125	0	38
22	13646	NOIRLab	Understanding the Progenitor Systems, Explosion Mechanisms, and Cosmological Utility of Type Ia Supernovae	Foley, Ryan	36	36	30
22	13629	XMM	Characterizing the high-energy properties of a highly magnetized star	Naze, Yael	3	0	2
21	13614	SPITZER	High-Redshift Starburst Galaxies Under the Cosmic Microscope: Unveiling the stellar histories of strongly lensed starburst galaxies	Vieira, Joaquin	6	0	3
21	13613	SPITZER	Dust to Dust: Monitoring the Evolution of the New Class of Self-Obscured Transients	Kochanek, Chris S.	4	0	1
21	13516	CHANDRA	The Variable Absorption and Disrupting X-ray Jet of the Broad Absorption Line Radio-Loud Quasar PG 1004+130	Brandt, William Nielsen	1	0	1
21	13515	CHANDRA	The Effect of Intermediate-Luminosity Transients on the X-ray Luminosity Functions of Spiral Disks	Binder, Breanna	8	0	11
21	13514	CHANDRA	Snapshots In The History Of Dissociative Major Mergers	Pacaud, Florian	4	0	6
21	13513	CHANDRA	A Pilot Search for Spatially Offset AGN in Galaxy Merger Remnants	Comerford, Julia	8	0	3
21	13512	CHANDRA	The curious case of Mrk~590	Mathur, Smita	2	0	1
21	13511	CHANDRA	CXOU J122518.6+144545: Type IIn supernova or hyperluminous X-ray source?	Heida, Marianne	1	0	2
21	13510 13772 14329	CHANDRA	Joint Chandra and HST Monitoring and Studies of the Crab Nebula	Weisskopf, Martin C.	12	0	5
21	13508	CHANDRA	Resolved Spectroscopy of the Extended X-ray Emission in NGC 4151: New Insights into AGN-driven Outflows	Kraemer, Steven B.	2	0	1
21	13507	CHANDRA	Testing relativistic feedback at crucial jet power	Worrall, Diana M.	2	0	2
21	13506	CHANDRA	Probing dark matter in the luminous radio galaxy 3C220.3 and the structure of the z=2.22 SMG/AGN it is lensing.	Wilkes, Belinda J.	1	0	1
21	13493	XMM	An XMM-Newton+HST study of the likely most X-ray luminous z>=0.9 galaxy cluster	Schrabback, Tim	5	5	3
21	13477	SPITZER	Unmasking the Supernova Impostors	Kochanek, Chris S.	6	0	6
21	13429 13836	XMM	Unveiling the X-ray/UV Connection in AGN Winds: the PG 1126-041 Case Study	Giustini, Margherita	8	0	1
21	13425	XMM	Multiwavelength Test For A Standard Accretion Disk Around An Intermediate Mass Black Hole Candidate	Feng, Hua	2	0	5
21	13403	XMM	Monitoring the awakening of the dormant SMBH at the center of our galaxy	Grosso, Nicolas	6	0	4
21	13392	SPITZER	Six in One Blow: Reconstructing the Circumstellar Environments of Supernovae in NGC 6946 with Light Echoes	Sugerman, Ben E. K.	5	0	6
21	13388	XMM	Fundamental properties of novae outburst: Coordinated HST and XMM ToO observations	Schwarz, Greg James	6	0	3
21	13380	XMM	Probing Black Hole Disk Atmospheres with EPIC and RGS Observations of 4U 1957+11	Nowak, Michael	3	0	0
21	13342	XMM	WARM AND HOT GASES IN AND AROUND CLUSTER GALAXIES AT Z=0.1-0.2	Wang, Q. Daniel	11	0	3
21	13330	CHANDRA	Mapping the AGN Broad Line Region by Reverberation	Peterson, Bradley M	179	0	24
21	13280	SPITZER	Evolution of heterogeneous cloud structure through the T dwarf sequence	Buenzli, Esther	15	0	2
21	13184	XMM	Deciphering AGN outflows: multiwavelength monitoring of NGC 5548	Kaastra, Jelle	12	0	5
20	13178	SPITZER	Spitzer Trigonometric Parallaxes of the Solar Neighborhood's Coldest Brown Dwarfs	Kirkpatrick, J. Davy	15	0	4
20	13177	SPITZER	Spitzer UltRaFaint SUrvey {SURF'S Up}: Cluster Lensing and Spitzer Extreme Imaging Reaching Out to z~7	Bradac, Marusa	13	13	10
20	13176	SPITZER	Extrasolar Storms: The Physics and Chemistry of Evolving Cloud Structures in Brown Dwarf Atmospheres	Apai, Daniel	28	0	6
20	13117	CHANDRA	A Chandra/HST survey of dark gamma-ray bursts and their hosts	Levan, Andrew James	8	0	5
20	13116	CHANDRA	Probing The Causes of the High/Low Jet Power Dichotomy in AGN Jets with Chandra and HST	Kharb, Preeti	6	0	2
20	13115	CHANDRA	A High-Resolution Study of Long-Term Absorption Variation and the X-ray/UV Connection in NGC 3783	Brandt, William Nielsen	2	0	4
20	13114	CHANDRA	3C 111: An Ideal Galaxy for Revealing Jet Physics	Perlman, Eric S.	3	0	2
20	13113	CHANDRA	ENERGY DEPENDENT X-RAY MICROLENSING AND THE STRUCTURE OF QUASARS	Kochanek, Chris S.	12	0	1
20	13112	CHANDRA	The Hierarchical Assembly of Massive Black Holes: Identifying Kpc-Scale Triple AGNs with Chandra, HST, and EVLA	Liu, Xin	3	0	6
20	13111	CHANDRA	Monitoring M31 for BHXNe	Barnard, Robin	4	0	3
20	13110	CHANDRA	The Astrophysics of the Most Energetic Gamma-Ray Bursts	Fruchter, Andrew S.	7	0	2
20	13109	CHANDRA	Joint Chandra and HST Monitoring and Studies of the Crab Nebula	Weisskopf, Martin C.	5	0	3
20	13108	CHANDRA	The X-ray and UV spectra of the quiescent neutron star X-ray binary EXO 0748-676	Miller, Jon Matthew	9	0	2
20	13107	CHANDRA	AG Dra: High-Resolution Spectra of the Brightest Supersoft Source	Smith, Randall	6	0	0
20	13106	CHANDRA	A New Insight into Open Cluster Internal Dynamics and Neutron Star Formation	Gosnell, Natalie	1	0	1
20	13060	CHANDRA	Alpha Cen: Climbing out of a Coronal Recession? {year 2 continuation}	Ayres, Thomas R.	4	0	4
20	13043	CHANDRA	Multiwavelength spectra of the fine structure of the Crab	Kargaltsev, Oleg Y.	2	0	2
20	13035	NOIRLab	A unique opportunity to discover how energy is transported through Jupiter's magnetosphere	Badman, Sarah V.	14	0	10
20	13026	XMM	XMM-Newton Target of Opportunity of Tidal Disruption Events	Levan, Andrew James	4	0	1
20	13015	NOIRLab	WPVS 007: Acceleration or Evolution in a Broad Absorption Line Outflow	Leighly, Karen Marie	4	0	3
20	12979	XMM	The Stellar Population Around the Intermediate Mass Black Hole ESO 243-49 HLX-1	Maccarone, Thomas J.	10	0	2
20	12974	NOIRLab	WFC3IR Imaging of UV-Faint z=6 Quasars: Star-Forming Host Galaxies of AGN in the Early Universe	Mechtley, Matthew	25	0	5
20	12967	NOIRLab	Establishing a Network of DA White Dwarf SED Standards	Saha, Abhijit	18	18	5
20	12965	CHANDRA	Properties and dynamics of the upper atmosphere of the hot-Neptune GJ 436b	Ehrenreich, David	12	0	5
20	12953	XMM	Catching AGN in Deep Minimum States to Unveil Their Core Environment	Schartel, Norbert	2	0	1
20	12952	XMM	The extreme X-ray weakness of PG 0043+039	Schartel, Norbert	1	0	2
20	12921	CHANDRA	Multiwavelength Spectroscopy of the Interstellar Medium: O and Ne Abundance ratio	Yao, Yangsen	9	0	0
20	12920	XMM	Testing the paradigm of X-ray driven exoplanet evaporation with XMM+HST	Wheatley, Peter J.	10	0	3
20	12919	XMM	Physics of Black Hole Transients from Simultaneous X-Ray and UV Observations	Veledina, Alexandra	4	0	1
19	12764	CHANDRA	The demographics of dark gamma-ray bursts	Levan, Andrew James	6	0	8
19	12763	CHANDRA	The Impact of Brightest Cluster Galaxy Formation on the Intracluster Medium	Mulchaey, John S.	4	0	0
19	12762	CHANDRA	M51: Using the Kinematics of a Grand-Design Spiral to Understand the Physics of the Hot ISM, SNRs, and XRBs	Kuntz, Kip	10	0	3
19	12761	CHANDRA	Dynamical Evolution of the Recent Jet in CH Cyg	Karovska, Margarita	3	0	0
19	12759	CHANDRA	A Chandra Legacy Project to Resolve the Accretion Flow of Gas Captured by a Supermassive Black Hole	Irwin, Jimmy A.	6	0	11
19	12758 13060 13465	CHANDRA	Alpha Cen: Climbing out of a Coronal Recession?	Ayres, Thomas R.	12	0	4
19	12757	CHANDRA	A DETAILED CHANDRA/HST STUDY OF THE FIRST z approx 1 CLUSTER BLINDLY DISCOVERED IN THE PLANCK ALL SKY SURVEY	Mazzotta, Pasquale	8	0	8
19	12756	CHANDRA	X-raying the spectacular star-forming trail behind IC 3418	Sun, Ming	4	0	2
19	12755	CHANDRA	Chandra Observations of the Brightest Sunyaev-Zeldovich Effect Cluster	Hughes, John P.	6	0	15
19	12754	CHANDRA	Identifying Analogs of NGC 6240: Galaxies with Dual Supermassive Black Holes	Comerford, Julia	10	0	10
19	12753	CHANDRA	Monitoring M31 for BHXNe	Garcia, Michael R.	4	0	2
19	12752	CHANDRA	M31*: A Resolved Low-Luminosity Accretion Flow Around a Murmuring Monster	Garcia, Michael R.	4	0	0
19	12751	CHANDRA	The Spectral Energy Distribution of a Very Faint X-ray Transient	Heinke, Craig	1	0	3
19	12750	CHANDRA	Monitoring Dynamical Mass Loss from Eta Car with the HETG and STIS: The Rise to Maximum	Corcoran, Michael F.	3	0	7
19	12749	CHANDRA	The Astrophysics of the Most Energetic Gamma-Ray Bursts	Fruchter, Andrew S.	7	0	2
19	12748	CHANDRA	Joint Chandra and HST Monitoring of the Crab Nebula	Weisskopf, Martin C.	6	0	4
19	12747	CHANDRA	Constraining the irradiated disk and the nature of the companion star in an ultraluminous X-ray source	Grise, Fabien	3	0	1
19	12746	CHANDRA	Close binary populations in metal-rich globular clusters	Kong, Albert	4	0	8
19	12745	CHANDRA	Measuring X-ray and UV Magnetic Activity on the Fast-Rotating K0 Dwarf KIC_11560431	Brown, Alexander	4	0	2
19	12659	SPITZER	Strongly Lensed Dusty Star Forming Galaxies: Probing the Physics of Massive Galaxy Formation	Vieira, Joaquin	18	0	5
19	12658	SPITZER	Fundamental Parameters of the SHIELD Galaxies	Cannon, John Michael	11	0	8
19	12450	SPITZER	Understanding A New Class of Mid?IR Transients	Kochanek, Chris S.	6	0	13
19	12449	SPITZER	Atmospheric Composition of the ExoNeptune HAT-P-11	Deming, Drake	8	0	9
18	12378	CHANDRA	The differing environments of dark gamma-ray bursts	Levan, Andrew James	6	0	8
18	12377	CHANDRA	DLSCL J0916+2953: A New Transverse Cluster Merger	Dawson, William Anthony	6	0	8
18	12376	CHANDRA	The Spinning Corona of FK Comae	Kashyap, Vinay	11	0	2
18	12375	CHANDRA	Optical Counterpart of the ULX in NGC 247	Feng, Hua	2	0	7
18	12374	CHANDRA	Alpha Cen to the Max	Ayres, Thomas R.	6	0	3
18	12373	CHANDRA	AGN heating and cooling in the most luminous group cool core	Sun, Ming	3	0	2
18	12372	CHANDRA	A hot X-ray tail from a transforming galaxy in A3627	Sun, Ming	3	0	4
18	12371	CHANDRA	Does the brightest lensed galaxy contain an AGN?	Rigby, Jane R.	3	0	2
18	12370	CHANDRA	The Astrophysics of the Most Energetic Gamma-Ray Bursts	Fruchter, Andrew S.	6	0	2
18	12369	CHANDRA	Constraining the Transient Black Hole {Bh} Low-Mass X-Ray Binary {Lmxb} Population	Fabbiano, Giuseppina	5	0	8
18	12368	CHANDRA	Extreme Mergers from the Massive Cluster Survey	Morris, R. Glenn	4	0	10
18	12367	CHANDRA	Monitoring M31 for BHXNe	Garcia, Michael R.	4	0	2
18	12366	CHANDRA	A Runaway Black Hole in COSMOS	Civano, Francesca	1	0	0
18	12365	CHANDRA	A CHandra survey of Extended Emission-line Regions in nearby Seyfert galaxies {CHEERS}	Wang, Junfeng	5	0	5
18	12363	CHANDRA	X-ray and HST Imaging of Kpc-Scale Binary AGNs	Shen, Yue	4	0	4
18	12362	CHANDRA	The Bullet Cluster Reloaded? An in-depth study of two post-collision cluster mergers	Ebeling, Harald	5	0	11
18	12361	CHANDRA	Chandra X-ray and HST/COS+STIS UV Spectroscopy of Low-Mass Stars in the 9 Myr Old TW Hya Association	Brown, Alexander	5	0	5
18	12331	SPITZER	Massive Star CSI: Has The Progenitor of SN2008S Vanished?	Kochanek, Chris S.	2	0	6
18	12330	SPITZER	Spitzer Verification of the Coldest WISE?selected Brown Dwarfs	Kirkpatrick, J. Davy	12	0	11
18	12329	SPITZER	Physical Properties of Spectroscopically Confirmed Galaxies at 5.7	Jiang, Linhua	10	0	4
18	12315	NOIRLab	Winds, accretion and activity: Deciphering the FUV lines in TW Hya	Guenther, Hans Moritz	10	0	1
18	12314	SPITZER	Mapping Brown Dwarfs: The Evolution of Cloud Properties Through the L/T Transition	Apai, Daniel	24	0	7
18	12313	CHANDRA	An in-depth study of dark matter in the massive cluster merger MACSJ0358.8-2955	Ebeling, Harald	5	0	10
18	12300 12674	NOIRLab	A Deep Kinematic Investigation of Cas A's Opposing High-Velocity Ejecta Jets	Fesen, Robert A.	10	0	4
18	12279	CHANDRA	FK Comae, King of Spin: the Movie	Ayres, Thomas R.	11	0	3
17	12022	CHANDRA	The chemical composition of AGN outflows	Kaastra, Jelle	10	0	20
17	12021	CHANDRA	An Irradiated Disk in an Ultraluminous X-Ray Source	Kaaret, Philip	4	0	1
17	12020	CHANDRA	The Deepest Stellar X-ray/optical Census of the Bulge	Clarkson, Will I.	7	0	3
17	12019	CHANDRA	After the Fall: Fading AGN in Post-starburst Galaxies	Tremonti, Christy A.	12	0	10
17	12018	CHANDRA	Ultra-Luminous x-Ray Sources in the Most Metal-Poor Galaxies	Prestwich, Andrea H.	17	0	2
17	12017	CHANDRA	The Proper Motion of SNR E0519-69.0	Hughes, John P.	4	0	6
17	12016	CHANDRA	The Stars and Edge-on Disks of PDS 144: An Intermediate-Mass Analog of Wide T Tauri Multiple Stars	Grady, Carol A.	8	0	3
17	12015	CHANDRA	Rapid Follow-Up Observations of Tidal Disruption Events Discovered by Pan-STARRS1	Gezari, Suvi	9	0	1
17	12014	CHANDRA	Continued M31 Monitoring for Black Hole X-ray Nova	Garcia, Michael R.	4	0	2
17	12013	CHANDRA	Monitoring Dynamical Mass Loss from Eta Car with the HETG	Corcoran, Michael F.	5	0	9
17	12012	CHANDRA	Binary Formation in the Sparse Galactic Globular Cluster NGC 3201	Sivakoff, Gregory R.	1	0	3
17	12011	CHANDRA	Magnetic Heating of the Outer Atmospheres of Very Low Mass Dwarfs	Osten, Rachel A.	8	0	2
17	12009	CHANDRA	Anatomy of a merger: the curious case of MACS J0417.5-1154	von der Linden, Anja	4	0	12
17	12008	CHANDRA	Primordial formation of close binaries in globular clusters with low density cores	Kong, Albert	6	0	15
17	11841	CHANDRA	The Formation of Brightest Cluster Galaxies	Mulchaey, John S.	2	0	1
17	11840	CHANDRA	Identifying the host galaxies for optically dark gamma-ray bursts	Levan, Andrew James	10	0	9
17	11839	CHANDRA	The Cycles of Alpha Centauri	Ayres, Thomas R.	3	0	2
17	11838	CHANDRA	Completing a Flux-limited Survey for X-ray Emission from Radio Jets	Marshall, Herman L.	14	0	3
17	11837	CHANDRA	A Co-ordinated Chandra, Suzaku, HST Campaign for NGC3227	Elvis, Martin	2	0	1
17	11836	CHANDRA	Chandra Imaging of NGC 922 -- the closest collisional ring galaxy	Prestwich, Andrea H.	3	0	3
17	11835	CHANDRA	The multi-faceted X-ray activity of low-redshift active galaxies	Birkinshaw, Mark	7	0	2
17	11834	CHANDRA	Deconstructing AGN X-ray Spectra - Time for a Paradigm Shift?	Turner, T. Jane	4	0	5
17	11833	CHANDRA	Monitoring M31 for BHXNe	Garcia, Michael R.	4	0	9
17	11832	CHANDRA	The Structure and Physics of the Youngest Radio Galaxies	Perlman, Eric S.	2	0	2
17	11831	CHANDRA	Probing X-Ray Jet Emission Mechanisms in a Complete Blazar Sample	Kharb, Preeti	2	0	2
17	11830	CHANDRA	Jets at Intermediate Redshifts: Shedding Light on Emission Mechanisms and Physics	Sambruna, Rita M.	3	0	1
17	11829	CHANDRA	Coronal and Transition Region Heating Due to Magnetic Activity on Metal-Poor Dwarf Stars	Brown, Alexander	3	0	2
17	11828	CHANDRA	X-ray and FUV Photo-Ionization/-Excitation of Transitional Disks Around thePMS Stars HD135344B and Lk Halpha 330	Brown, Alexander	3	0	6
17	11733	CHANDRA	WPVS 007: the little AGN that could	Leighly, Karen Marie	2	0	3
17	11715	NOIRLab	The Luminous Galactic Cepheid RS Puppis: A Geometric Distance from its Nested Light Echoes	Bond, Howard E.	10	0	2
17	11669	NOIRLab	The Origins of Short Gamma-Ray Bursts	Fruchter, Andrew S.	23	0	7
17	11643	CHANDRA	A Timeline for Early-Type Galaxy Formation: Mapping the Evolution of Star Formation, Globular Clusters, Dust, and Black Holes	Zabludoff, Ann	26	0	4
17	11603	NOIRLab	A Comprehensive Study of Dust Formation in Type II Supernovae with HST, Spitzer and Gemini	Andrews, Jennifer	20	0	3
16	11344	CHANDRA	Velocity Gradients in the Jets of BL Lac Objects	Marscher, Alan P.	2	0	1
16	11344	SPITZER	Velocity Gradients in the Jets of BL Lac Objects	Marscher, Alan P.	2	0	1
16	11343	CHANDRA	Identifying the host galaxies for optically dark gamma-ray bursts	Levan, Andrew James	9	0	12
16	11342	CHANDRA	X-ray Jets Activity in the Symbiotic System CH Cyg	Karovska, Margarita	4	0	1
16	11341	CHANDRA	Lower Luminosity AGNs at Cosmologically Interesting Redshifts: SEDs and Accretion Rates of z~0.36 Seyferts	Gallagher, Sarah	7	0	3
16	11340	CHANDRA	X-ray Observations of 11 Millisecond Pulsars in M28	Grindlay, Jonathan E.	8	0	4
16	11339	CHANDRA	A deep observation of NGC4261: understanding its unique X-ray source population, gas morphology, and jet properties	Zezas, Andreas	9	0	3
16	11338	CHANDRA	Continued M31 Monitoring for Black Hole X-ray Nova	Garcia, Michael R.	4	0	1
16	11337	CHANDRA	Investigating the X-ray Variability of Cassiopeia A	Patnaude, Daniel J.	12	0	2
16	11336	CHANDRA	X-RAY AND UV PHOTOION IZATION AND PHOTOEXCITATION OF PRE-MAIN-SEQUENCE STAR TRANSITIONAL DISKS	Brown, Alexander	3	0	1
16	11304	SPITZER	The L/T Transition in the Photospheres of Young Sub-Stellar Companions	Metchev, Stanimir A.	1	0	1
16	11229	SPITZER	SEEDS: The Search for Evolution of Emission from Dust in Supernovae with HST and Spitzer	Meixner, Margaret	34	0	14
16	11216	CHANDRA	HST / Chandra Monitoring of a Dramatic Flare in the M87 Jet	Biretta, John A.	9	0	6
16	11199	CHANDRA	A Hard Look at Stellar Disks at the Epoch of Planet Formation	Hartmann, Lee W.	6	0	2
16	11153	SPITZER	The Physical Nature and Age of Lyman Alpha Galaxies	Malhotra, Sangeeta	40	0	1
16	11151	CHANDRA	Evaluating the Role of Photoevaporation of Protoplanetary Disk Dispersal	Herczeg, Gregory J.	18	0	2
16	11149	SPITZER	Characterizing the Stellar Populations in Lyman-Alpha Emitters and Lyman Break Galaxies at 5.7	Egami, Eiichi	57	0	7
16	11142	SPITZER	Revealing the Physical Nature of Infrared Luminous Galaxies at 0.3	Yan, Lin	150	0	9
15	11015	CHANDRA	The Proper Motion of Supernova Remnant E0509-67.5	Hughes, John P.	8	0	11
15	11014	CHANDRA	Primordial formation of close binaries in globular clusters with low density cores	Kong, Albert	5	0	2
15	11013	CHANDRA	Continued M31 Monitoring for Black Hole X-ray Nova	Garcia, Michael R.	4	0	5
15	11012	CHANDRA	NGC 4190-ULX1: The forgotten ULX	Roberts, Timothy Paul	5	0	1
15	11011	CHANDRA	Dissecting An Accretion Disk	Kochanek, Chris S.	5	0	0
15	11003	SPITZER	Mixing It Up : Gas, Stars, Starbirth, and AGN in a Supercluster at z = 0.9	Lubin, Lori M.	30	0	14
15	11002	SPITZER	A Census of LIRGs in Clusters of Galaxies in the First Half of the Universe from the IRAC Shallow Survey	Eisenhardt, Peter	33	0	4
15	11001	SPITZER	Fallback Debris Disks Around Neutron Stars	Chakrabarty, Deepto	9	0	0
15	11000	SPITZER	Evaporating Disks	Balog, Zoltan	5	0	1
15	10999	SPITZER	Testing the first direct measurement of cataclysmic variable evolution: the search for a circumbinary disk or a low?mass companion around NN Serpentis	Brinkworth, Carolyn S.	1	0	0
15	10910	CHANDRA	HST / Chandra Monitoring of a Dramatic Flare in the M87 Jet	Biretta, John A.	9	0	6
15	10908	SPITZER	Gotcha Using Swift GRBs to Pinpoint the Highest Redshift Galaxies	Berger, Edo	24	0	2
15	10899	SPITZER	Identifying z>7 galaxies from J-dropouts	Malkan, Matthew A.	29	0	1
15	10860	SPITZER	The largest Kuiper belt objects	Brown, Michael E	25	0	6
15	10846	CHANDRA	The Halo Structure of RCS2-2327.4-0204	Gladders, Michael D.	22	12	9
14	10769	CHANDRA	X-Ray Sources in Starburst Galaxies	Kaaret, Philip	4	0	6
14	10768	CHANDRA	Locating the Ultraluminous X-Ray Source in IC 342	Kaaret, Philip	5	0	7
14	10767	CHANDRA	Further Resolving the Puzzle of Hybrid Star X-rays	Ayres, Thomas R.	6	0	1
14	10766	CHANDRA	A Deep X-ray Survey of the Small Magellanic Cloud	Zezas, Andreas	12	0	2
14	10765	CHANDRA	The Discrete X-ray Source Population in NGC~5253, our nearest post-starburst	Zezas, Andreas	3	0	13
14	10764	CHANDRA	X-Ray Activity and Winds in Young A Stars at the Epoch of Disk Clearing	Grady, Carol A.	2	0	2
14	10763	CHANDRA	The Guitar Nebula: A Bow Shock that Traces ISM Turbulence and Accelerates Relativistic Particles	Chatterjee, Shami	3	0	1
14	10762	CHANDRA	The Long X-ray Jet of Quasar 4C19.44	Harris, Daniel E.	5	0	1
14	10761	CHANDRA	The X-ray Spectral and Optical/IR Flux Variability in Magnetars	Kaspi, Victoria M.	6	0	2
14	10760	CHANDRA	Black Hole X-ray Novae in M31	Garcia, Michael R.	20	0	11
14	10717	SPITZER	Quasar Bolometri Luminosity and Spectral Energy Distributions from Radio to X-ray	Shang, Zhaohui	7	0	9
14	10716	SPITZER	The Unique Cluster Lens SDSS1004+4112	Kochanek, Chris S.	4	0	3
14	10625	SPITZER	A Multiwavelength Investigation of Comet 73P/SW3-C	Lamy, Philippe	9	0	1
14	10617	CHANDRA	HST / Chandra Monitoring of a Dramatic Flare in the M87 Jet	Biretta, John A.	11	0	7
14	10616	SPITZER	Gotcha Using Swift GRBs to Pinpoint the Highest Redshift Galaxies	Berger, Edo	24	0	6
14	10594	NOIRLab	The Formation of Spiral Spheroids and Their Globular Cluster Systems	Goudfrooij, Paul	8	8	6
14	10579	CHANDRA	ULX counterparts: the key to finding intermediate-mass black holes	Roberts, Timothy Paul	12	0	13
14	10551	CHANDRA	Gamma-Ray Bursts from Start to Finish: A Legacy Approach	Kulkarni, Shrinivas R.	101	0	20
13	10354	CHANDRA	Probing the Link between Galactic Bars & Starburst/AGN Activity in NGC1672/NGC7771	Jenkins, Leigh	4	0	8
13	10353	CHANDRA	Galactic Bulge Chandra-HST Survey	Grindlay, Jonathan E.	12	0	4
13	10352	CHANDRA	A Study of the Physics of Extended Relativistic X-ray Jets, Discovered in our Chandra Survey	Marshall, Herman L.	10	0	2
13	10351	CHANDRA	X-ray em ission from fast moving shocks in theprotostellar jet HH 154: a binding diagnostic of the emission medium	Favata, Fabio	2	0	1
13	10350	CHANDRA	X-ray Binaries in the Ultrahigh Collision Rate Globular Cluster NGC 6388	Cohn, Haldan N	3	0	7
13	10349	CHANDRA	A Uniform Study of Globular Cluster X-ray Sources: the Keys to Cluster Dynamical Evolution	Lewin, Walter H. G.	6	0	6
13	10348	CHANDRA	The Production of X-ray Emission in Classical T Tauri Stars	Herczeg, Gregory J.	3	0	3
13	10343	CHANDRA	X-ray from misaligned FRI jets: IC/CMB emission from a fast spine?	Sambruna, Rita M.	1	0	2
13	10246	NOIRLab	The HST survey of the Orion Nebula Cluster	Robberto, Massimo	104	104	50
13	10239	CHANDRA	A Multiwavelength Study of POX 52, a Dwarf Seyfert Galaxy with an Intermediate-Mass Black Hole	Barth, Aaron J.	6	0	4
13	10133	CHANDRA	HST / Chandra Monitoring of a Dramatic Flare in the M87 Jet	Biretta, John A.	11	0	10
12	10009	CHANDRA	Galactic Bulge Deep Survey	Grindlay, Jonathan E.	9	0	2
12	10008	CHANDRA	The Supersoft Source 1E1339.8+2837 and Globular Cluster M3	Grindlay, Jonathan E.	2	0	2
12	10007	CHANDRA	The Spectral Energy Distribution of Cen X-4	Garcia, Michael R.	2	0	0
12	10006	CHANDRA	Black Hole X-ray Novae in M31	Garcia, Michael R.	10	0	27
12	10005	CHANDRA	A Uniform Study of Globular Cluster X-raySources: The Keys to Cluster Dynamical Evolution	Lewin, Walter H. G.	4	0	11
12	10004	CHANDRA	The Physics of Relativistic Jets: Chandra Imaging of Extended Jets in Gamma-loud Blazars	Tavecchio, F.	6	0	4
12	10003	CHANDRA	Deep Chandra and Hubble Observations of NGC4697, the Nearest Optically Luminous, X-ray Faint Elliptical Galaxy	Sarazin, Craig L.	1	0	18
12	10002	CHANDRA	Detailed Study of X-ray Jets from a Complete Survey	Perlman, Eric S.	5	0	2
12	10001	CHANDRA	Locating Ultraluminous X-Ray Sources	Kaaret, Philip	4	0	2
12	9888 10113 10482	NOIRLab	Trigonometric Calibration of the Period- Luminosity Relations for Fundamental and First-Overtone Galactic Cepheids	Bond, Howard E.	30	0	1
12	9882 10109 10479	NOIRLab	The Distance and Mass of the Neutrino-Luminous White Dwarf PG 0122+200	O'Brien, M. Sean	10	0	0
12	9877	NOIRLab	A test of the foreground proximity effect at z=1.2	Williger, Gerard	27	0	3
12	9847	CHANDRA	The Structure and Physics of Extragalactic Jets	Perlman, Eric S.	15	0	7
12	9838	NOIRLab	The Upper End of the Supermassive Black Hole Mass Function: Pushing the 10 Billion Solar Mass Limit.	Ferrarese, Laura	29	0	4
12	9829	CHANDRA	HST / Chandra Monitoring of a Dramatic Flare in the M87 Jet	Biretta, John A.	6	0	9
12	9818	NOIRLab	Reverberation Mapping of the Least Luminous Seyfert 1 Galaxy NGC 4395	Laor, Ari	10	0	5
12	9812	NOIRLab	Ultraviolet Emission from Protostellar Accretion Disks	Hartigan, Patrick	9	0	1
12	9796	CHANDRA	Observations of Intermediate Mass Black Hole Candidate Ultra-Luminous X-ray Sources	Miller, Jon Matthew	17	0	28
12	9794	NOIRLab	The Physical Parameters and Stellar Winds of Hot, Massive Stars at High Metallicity: O-stars in the Andromeda Galaxy	Massey, Philip Louis	40	40	16
11	9690	CHANDRA	X-Raying Baade's Window Through the Galactic Bulge	Grindlay, Jonathan E.	6	0	6
11	9689	CHANDRA	The Impending Destruction of NGC 1427A	Gregg, Michael D.	6	0	5
11	9688	CHANDRA	Connecting the X-Ray and UV Ionized Absorbers in MRK 279	Kaastra, Jelle	16	0	14
11	9687	CHANDRA	Metallicity Determination in a Narrow Line Seyfert 1 Galaxy Using Joint Chandra & HST Observations	Mathur, Smita	5	0	5
11	9686	CHANDRA	Probing the Accretion Geometry of a Quiescent Black Hole	Hynes, Robert I.	5	0	2
11	9685	CHANDRA	Multiwavelength Observations of Jupiter's Auroral Hot Spot	Elsner, Ronald F.	5	0	7
11	9684	CHANDRA	The Ultraluminous X-Ray Source in Holmberg II	Kaaret, Philip	4	0	4
11	9683	CHANDRA	A Chandra and HST Study of IC 10: The Nearest Starburst Galaxy to the Milky Way	Bauer, Franz	3	0	15
11	9682	CHANDRA	The Physics of Relativistic Jets: Deep Chandra and HST Observations of Two Newly Discovered Jets	Sambruna, Rita M.	3	0	7
11	9681	CHANDRA	Probing the Structure of the Narrow-Line Region in Seyfert Galaxies with CXO Imaging Spectroscopy	Kraemer, Steven B.	2	0	2
11	9680	CHANDRA	The X-Ray Emission Mechanism from Optical Jets: 3C 78	Birkinshaw, Mark	2	0	1
11	9495	NOIRLab	Do the Most Powerful Radio Galaxies Host the Most Massive Black Holes ?	Martel, Andre	15	0	1
11	9494	CHANDRA	ACS Observations of the Optical Jet of MH 2136-428	Padovani, Paolo	1	0	1
11	9421	NOIRLab	UV Observations of Hubble Flow Type Ia Supernovae	Nugent, Peter E.	10	0	1
11	9405	CHANDRA	The Origin of Gamma-Ray Bursts	Fruchter, Andrew S.	145	0	33
11	9405	NOIRLab	The Origin of Gamma-Ray Bursts	Fruchter, Andrew S.	145	0	33
11	9398	NOIRLab	Understanding Irradiation and Dipping Behaviour in Low Mass X-ray Binaries	Hynes, Robert I.	6	0	5
11	9375	CHANDRA	The Host Galaxies of Time Delay Lenses: , An Independent Route to the Hubble Constant	Kochanek, Chris S.	25	0	18
10	9283	CHANDRA	Probing the Gas in the V471 Tau System with Absorption Spectroscopy	Walter, Frederick M.	4	0	3
10	9282	CHANDRA	Multiwavelength Observations of the Black Hole XTE J1118+480 in Quiescence	Murray, Stephen S.	10	0	2
11	9281	CHANDRA	Complete Compact Object and Binary Survey of 47Tuc	Grindlay, Jonathan E.	9	0	23
10	9280	CHANDRA	X-Ray Imaging of GPS and CSS Quasars	Siemiginowska, Aneta	19	0	1
10	9279	CHANDRA	Resolving the Warm Absorber in NGC 5548	Kaastra, Jelle	8	0	8
10	9278	CHANDRA	The Next Geminga: A Neutron Star Identification for the Egret Source 3EG J1835+5918	Halpern, Jules P.	4	0	1
10	9277	CHANDRA	An Absorption Study of PG 2112+059: the X-Ray brightest BAL QSO Known	Gallagher, Sarah	1	0	2
10	9276	CHANDRA	Localization of Optically-Dark Gamma-Ray bursts by Chandra and HST	Ricker, George R.	8	0	0
10	9275	CHANDRA	Simultaneous Chandra, HST and Fuse Observations of Warm Absorbers in AGN	Kriss, Gerard A.	5	0	6
10	9274	CHANDRA	Cluster-Galaxy Interactions in the Coma Cluster	Gregg, Michael D.	4	0	1
10	9273	CHANDRA	Buried Alive in the Coronal Graveyard?	Ayres, Thomas R.	4	0	8
10	9272	CHANDRA	Revealing the Nature of the X-ray Absorption in NGC 4151	Kraemer, Steven B.	5	0	9
10	9271	CHANDRA	Coronal Dynamics and the Complete Flare Energy Budget for the M Dwarf AD Leo	Brown, Alexander	6	0	5
11	9270	CHANDRA	Chandra and HST Observations of the Brightest, Relaxed Cluster Lenses	Allen, Steven W.	3	0	17
10	9181	CHANDRA	Exploratory Observations of a New Bright Quasar	Leighly, Karen Marie	2	0	8
10	9180	CHANDRA	Gamma-ray burst progenitors: probing their environment	Kulkarni, Shrinivas R.	91	0	19
10	9145	CHANDRA	A Snapshot Survey of the Optically Selected Type-2 Quasars	Djorgovski, S. George	20	0	0
10	9135	CHANDRA	A New High-z Galaxy Cluster with Extraordinary Lensed Arcs From Multiple Sources	Gladders, Michael D.	9	0	10
10	9122	CHANDRA	The Physics of X-Ray/Optical Jets	Urry, Claudia Megan	10	0	8
10	9102	CHANDRA	A YSO-like pulsed astrophysical jet and bipolar nebula in a dying star: WFPC2/STIS study of He2-90	Sahai, Raghvendra	8	0	5
10	9095	CHANDRA	Simultaneous HST, Chandra and FUSE Observations of Intrinsic Absorbers in AGN	Kriss, Gerard A.	5	0	5
10	9078	CHANDRA	Flares, Magnetic Reconnections and Accretion Disk Viscosity	Welsh, William F.	10	0	2
10	9073	CHANDRA	Ultraluminous X-Ray Sources and Intermediate Mass Black Holes	Bregman, Joel N.	15	0	26
10	9033	CHANDRA	Measuring the mass distribution in the most distant, very X-ray luminous galaxy cluster known	Ebeling, Harald	24	0	16
9	8889	CHANDRA	Tortured Coronae in the Rapid Breaking Zone	Ayres, Thomas R.	6	0	12
9	8882	CHANDRA	Chandra and HST Observations of the Brightest Cluster Lenses	Allen, Steven W.	9	0	13
9	8881	CHANDRA	An Unbiased Survey of X-Ray and Optical Emission From Extended Radio Jets in AGN	Sambruna, Rita M.	17	0	10
9	8880	CHANDRA	EV Lac	Osten, Rachel A.	4	0	14
9	8877	CHANDRA	Simultaneous HST and Chandra Observations of the X-Ray/UV absorbers in Seyfert 1 Galaxies	Yaqoob, Tahir	4	0	15
9	8606	CHANDRA	Determining the Nature of the Variable Absorption in AGN: Monitoring NGC 3783 with HST and Chandra	Crenshaw, D. Michael	34	0	11
9	8566	CHANDRA	High Resolution UV/X-ray Spectroscopy of SMC X-1	Vrtilek, Saeqa Dil	16	0	4
First Cycle for the Program	Proposal Number(s)	Observatory	Title	PI	Planned External Orbits*	Planned Parallel Orbits*	Number of Papers Associated with Program