High Level Science Products are observations, catalogs, or models that complement, or are derived from, MAST-supported missions. These include Hubble (HST), James Webb (JWST), TESS, PanSTARRS, Kepler/K2, GALEX, Swift, XMM, and others. HLSPs can include images, spectra, light curves, maps, source catalogs, or simulations. They can include observations from other telescopes, or data that have been processed in a way that differs from what's available in the originating archive. Use the filters below to discover HLSP.



HLSP filter

Listing Results

Results: 157

A Hubble Space Telescope gallery of merging galaxies (MERGGAL)

The HST 18th anniversary press release contains a large gallery of interacting and merging galaxies. In association with this press release, seven of these objects have been made available as MAST High-Level Science Products (HLSP). These data were originally acquired under HST programs 6276, 10592, 11091, 11092, 11095, 11956, and 11994.

NICMOS Legacy Archive PSF Library (LAPL) And Cirumstellar Environments (LAPLACE)

NICMOS coronagraphy, with well-matched template Point Spread Function subtraction, probes the closest environments of occulted targets with the highest imaging sensitivity in intrinsically high contrast fields at the smallest radial distances afforded. To obtain the best results, suitable template PSFs required to produce high-fidelity, photometrically robust, high contrast coronagraphic images are needed. To remedy this situation, the team undertook a rigorous, homogeneous, and complete recalibration and analysis of the full archival set of raw NICMOS coronagraphic images (through HST Cycle 15) to create a Legacy library of template PSFs.

Kepler Objects (KEPLER_HLSP)

This HLSP contains the detrended Kepler light curve and ground-based follow-up data (radial velocities and line bisectors) for Kepler's first five exoplanet discoveries.

CALSPEC-Calibrated IUE White Dwarfs (IUE-FLUXCAL)

IUE-FLUXCAL is a collection spectral energy distributions (SEDs) for six white dwarfs in the HST CALSPEC database that are also observed by IUE. Composite IUE SEDs of each white dwarf are constructed by co-adding available low-resolution NEWSIPS spectra. The published paper compares the IUE to CALSPEC in 20 Angstrom bins for SWP and 40 Angstrom bins for LWP or LWR. A global average of these binned ratios across all six white dwarfs define corrections to the IUE NEWSIPS flux scale. This HLSP provides the co-added IUE SEDs of the six white dwarfs, as well as the table of IUE-to-CALSPEC flux ratios required to calibrate IUE data onto the HST standard scale.

Survey of the Low-Redshift Intergalactic Medium with HST/COS (IGM)

A survey of the low-redshift intergalactic medium (IGM) has been performed by Danforth et al. (2015). Using HST COS spectra of 82 UV-bright AGN, several thousand absorption lines are identified from 2,610 distinct redshift systems at z < 0.723. The spectral features were selected and measured using a semi-automated analysis to minimize bias in line identification. For each of the 82 sightlines, a coadded, continuum-fitted spectrum is provided in FITS format. Two catalogs for each sightline are presented: one catalog lists the identified spectral features sorted by wavelength, while another lists the absorption features associated with IGM systems sorted by redshift.

The HLA Star Cluster Project (HLASTARCLUSTERS)

Compact star cluster catalogs are presented for 20 nearby, star-forming galaxies using observations from the Advanced Catalog for Surveys (ACS) and source lists generated by the Hubble Legacy Archive. A typical cluster luminosity function can be approximated by a power-law, with an average value for the index of -2.37 and rms scatter = 0.18. The uniform database provided by these HLA catalogs results in a small scatter (0.5 magnitude) in the correlation between the magnitude of the brightest cluster (M_brightest) and log of the number of clusters brighter than M_I = -9 (log N).


GSWLC is a catalog of physical properties for 700,000 galaxies with SDSS redshifts z < 0.3, using data from GALEX, SDSS, and WISE. The galaxy properties (stellar mass, dust attenuation, star formation rates) are obtained via UV/optical SED fitting using a Bayesian framework. The catalog contains galaxies within GALEX footprints regardless of a UV detection. Mid-IR star formation rates are derived from WISE 22 micron data.

Galaxy Halos, Outer disks, Substructure, Thick disks and Star clusters Survey (GHOSTS)

The GHOSTS survey (P.I. Roelof de Jong, Space Telescope Science Institute) provides HST analysis of extra-planar stellar populations of nearby disk galaxies (programs 9765, 10523, and 10889). The survey provides HST analysis of extra-planar stellar populations of nearby disk galaxies. Using deep ACS, WFPC2 and WFC3 images the project targets several edge-on galaxies covering a range of masses (Vrot = 80-260 km/s).

OB Stars (Galactic): FUSE Spectral Atlas (FUSE_GALOB)

The first of the two FUSE data catalogs contains an atlas of far-ultraviolet spectra of 45 OB (O2-B3) stars in the Galaxy (see Pellerin, Fullerton, Robert et al. 2002; ) for the spectral region 920-1180 Angstroms. All data were obtained through the 30+รน30 arcsec (large) science aperture. The original data resolution and reciprocal spectral dispersion were 15-20 km/s and 0.062-0.067 Angstroms/pixel, respectively. The data were further resampled to 0.12 Angstroms/pixel for this atlas. Most spectra were obtained in a series of back-to-back exposures. Tests indicated that apparent wavelength shifts among them are less than half a resolution element. The final spectra were constructed with simple coadditions.

HST Treasury Program on Eta Carinae (ETACAR)

Kris Davidson is the PI for an HST Treasury Program that observed Eta Carinae. Two HST programs were associated with this project: 9420 and 9973. Data from other programs have also been included for the creation of this data set, including: 7302, 8036, 8327, 8483, 8619, 9083, and 9337. The project has produced a series of technical memorada that detail processing techniques, definitions, mathematical considerations and other details. Although the treasury program was designed to obtain data during an anticipated spectroscopic event in mid-2003, this star and its ejecta have unique characteristics that make them important to several branches of astrophysics. Observations were obtained using the HST STIS/CCD, STIS/MAMA, WFCP2 and ACS images. Currently only the STIS/CCD observations have been released by the team.

A Catalog and Atlas of Cataclysmic Variables (CVCAT)

The Catalog and Atlas of Cataclysmic Variables (2001, PASP 113, 764) is a web-based version of the team's previously published catalogs (Downes and Shara 1993, PASP 105, 127; Downes, Webbink, and Shara 1997, PASP 109, 345). The data in this version supersedes that in the published catalogs, and contains the latest information on the objects. The catalog was frozen on February 1, 2006, and no new information will be added.

Cosmic Evolution Survey (COSMOS)

COSMOS (P.I. Nicholas Scoville) is an HST Treasury Program to survey a two square degree equatorial field, centered on RA=10:00:28.6 and DEC=+02:12:21.0 with the ACS in the I band of the VIMOS equatorial field. Parallel observations with WFPC2 and NICMOS were also obtained. Several HST programs are associated with this project: (9822; 9999; 10092; 10337; 10702). The team has also assembled several publically available ancillary datasets including optical spectra, deep XMM and VLA imaging, ground-based optical/IR imaging, UV imaging from GALEX and IR data from SIRTF. MAST has archived the ACS, WFPC2, NICMOS and GALEX science products from the COSMOS project.

Cluster Lensing And Supernova survey with Hubble (CLASH)

By observing 25 massive galaxy clusters with HST's panchromatic imaging capabilities (Wide-field Camera 3, WFC3, and the Advanced Camera for Surveys, ACS), CLASH will accomplish four primary science goals. The CLASH Multi-Cycle Treasury program (12065 PI: Marc Postman) observed 25 clusters over a three-year period. The team was awarded a total of 524 orbits of HST to conduct this program, and provide images, catalogs, and lens models.

ATLAS9 Model Atmosphere Database (BOSZ)

BOSZ stellar atmosphere models are based on ATLAS-APOGEE ATLAS9, and cover a broad range of effective temperature, surface gravity, metallicity, carbon abundance, and alpha-element abundance. Versions at different instrumental broadenings are provided. The new BOSZ LTE models have been fit to O,B,A,F,G stars observed with HST/STIS, and those results are compared to fits for the LTE grid from Castelli & Kurucz (2004).

WFPC2 Archival Parallels (Proposal 9540) (APPP)

The Archival Pure Parallel Project processed and combined with state-of-the-art tools about 2,000 WFPC2 images, primarily in the wide UBVI filters, obtained in parallel with other HST instruments. The team produced combined, drizzled, cosmic-ray cleaned images for each pointing. These data can be used to address a wide range of science topics: measuring the cosmic shear on scales from 20 arcseconds to 2'; discovering ~ 50 starforming galaxies at z ~ 4; finding optical counterparts to AGNs in wide-area radio and X-ray catalogs; improving the determination of the scale length of the Galactic disk; and studying stellar populations down to 1 solar mass for about 25 separate lines of sight in the Magellanic Clouds. The images are being made available to the astronomical community for a wide variety of other investigations, thus helping realize the legacy of WFPC2 parallel images.