EEEEEEEEEEE U U V V EEEEEEEEEEE E U U V V E E U U V V E EEEEEEE U U V V EEEEEEE E U U V V E E U U V V E EEEEEEEEEEE UUUUU V EEEEEEEEEEE --------------------------------------------------------------------------- ELECTRONIC NEWSLETTER OF THE EUVE OBSERVATORY --------------------------------------------------------------------------- Vol. 9, No. 2 18 July 2000 ISSN 1065-3597 --------------------------------------------------------------------------- (C) 2000, Regents of the University of California --------------------------------------------------------------------------- Notes from the Editor ===================== by Jennifer Cullison, EUVE Project Specialist Welcome to the electronic newsletter for NASA's Extreme Ultraviolet Explorer (EUVE) satellite, compiled and published quarterly by the Center for EUV Astrophysics (CEA) at the University of California, Berkeley (UCB). The contents of this issue of the EUVE electronic newsletter are as follows: 1. EUVE Satellite Mission Operations News 1.1 Operations Highlights 1.2 Observation Log 2. EUVE Science News 2.1 Science Highlights 2.2 Recent Director's Discretionay Time Observations 2.3 Recent EUVE Calibration Observations 2.4 EUVE Science Session at June 2000 AAS 2.5 Recent EUVE Data Releases 2.6 EUVE Publications: January - June 2000 To comment on or make suggestions for the EUVE electronic newsletter, please send e-mail to ceanews@cea.berkeley.edu (Internet). 1 EUVE Satellite Mission Operations News ======================================== 1.1 Operations Highlights ------------------------- EUVE operations highlights for the first two quarters of 2000 are: July 7, 2000 EUVE Celebrated 8-Year Launch Anniversary EUVE Well-Represented at June AAS EUVE Team Received Award from NASA Administrator FOT Continued Post-Battery-Failure Clean-Up Work June 13, 2000 EUVE Battery Failure Prompts Safe-Hold Mode Entries May 18, 2000 EUVE Coordinated TOOs of New X-Ray Transient UCB Submits EUVE Proposal to Senior Review Monthly EUVE Battery Reconditioning April 12, 2000 Contributed EUVE Oral Session Planned for AAS UCB Celebrates 3-Year Outsourcing Anniversary EUVE FOT Conducts Monthly Battery Reconditioning March 15, 2000 Combination of Operator Errors Results in EUVE SHM EUVE Conducts Innovative TOO Collaboration with AAVSO UCB Released New Version of EUVE Data Analysis Package Extra EUVE T1 Decommissioned To Save NASA $$ January 15, 2000 Battery dVs Trigger EUVE Entry into Safe-Hold Mode FOT Adjusts EUVE Frequency EUVE Y2K Status Details (including general notes and Y2K status) are available at: http://www.cea.berkeley.edu/~pubinfo/html/EUVE_operations_high_opshigh.html 1.2 Observation Log ------------------- EUVE observed 21 different targets for regular observations over the course of the first and second quarters of 2000 including sigma Gem, By Cam, UZ For, AN UMa, OY Car, J0659+142, AD Leo, HZ 43, EUVE J0932+26.9, NGC 4051, Virgo, XTE J1118+480, 44 Boo, 1H 1651+398, H1226+023, RE 1034+39, Ex Hya, TZ CrB, EUVE J2115+58.6, ACO 2149, and EUVE J006+29.0. Additional time was arranged for calibration of the star trackers. Details and previous observation information are available at: http://www.cea.berkeley.edu/~science/data/dynamic/exposures.html or http://www.cea.berkeley.edu/~science/html/EUVE_call99_euvelog.html 2. EUVE Science News ==================== 2.1 Science Highlights ---------------------- EUVE science highlights for the third quarter of 1999 are: June 13, 2000 Diffuse EUV Excess in Virgo Initial Findings from EUVE Observation of OY Car EUVE Reveals Variable White Dwarf GD 394 EUVE Detects EUV Flux from LMXB AC211 EUVE Leads Multi-Wavelength Coordinated Observing Campaign April 12, 2000 EUVE Monitors Flux Variability in Coordinated Observation of NGC 4051 EUVE TOO Catches X-ray Transient XTE J1118+480 March 15, 2000 EUVE TOO Helps Reveal Stages of Optical, X-ray, and EUV Emission Observed in SS Cyg Outburst EUVE Helps Reveal Nature of Early B Star Companion in Lambda Sco January 20, 2000 Understanding EUV/X-ray Emission from Comet P/Encke 1997 EUV Mapping of the LISM: the Local Chimney Revealed? The Source of Ionization in the LISM Cloud/Fluff?? Details and previous months' highlights are available at: http://www.cea.berkeley.edu/~science/html/Resources_high.html 2.2 Recent Director's Discretionary Time Observations ------------------------------------------------------ estimated exposure awarded EUVE Obs. Completed PI Target(s) ksec ksec cycle -------------- -- --------- ---- ---- ----- 20000429 Sirk H1226+023 10 10 8 20000428 Sirk IH1651+398 10 10 8 20000419 Mauche XTE J118+480 8 8 8 20000226 Mattei OY Car 100 100 8 EUVE DDTs do not have proprietary rights. Interested parties should be able to download this data from http://www.cea.berkeley.edu/~science/html/Archive_pointed_order.html (see "Recent EUVE Data Releases" below). 2.3 Recent EUVE Calibration Observations ---------------------------------------- est. exposure Obs. Completed Target ksec ------------- ------ ---- 20000314 HZ43 ~3 Detailed results of all of recent calibration studies are posted on the web as they become available. See http://www.cea.berkeley.edu/~science/html/Resources_calibration99.html. Calibration data has no proprietary rights. Interested parties should be able to download this data from permanent links at http://www.cea.berkeley.edu/~science/html/Archive_pointed_order.html (see "Recent EUVE Data Releases" below). 2.4 EUVE Science Session at June 2000 AAS ------------------------------------------ EUVE was well represented during the 4-8 June meeting of the American Astronomical Society (AAS) in Rochester, NY. Eight astronomers presented oral talks on a variety of scientific topics at a special EUVE science session, which was well-attended by 40-50 researchers. A number of other session talks and poster presentations highlighted EUVE-related results. EUVE Project support personnel attended the meeting to interface directly with the user community in an effort to improve overall service to EUVE customers. See the bibliography below for all EUVE-related papers given at the June AAS. 2.5 Recent EUVE Data Releases ----------------------------- Following is a list of EUVE data sets released over the first and second quarters of 2000. For releases prior to this see http://www.cea.berkeley.edu/~science/html/Archive_pointed_newrelease.html You may search for and download data sets from http://www.cea.berkeley.edu/~science/html/Archive_pointed_order.html Object Name Obs Date RA (J2000) Dec (J2000) ks Observer ----------- -------- ---------- ----------- --- -------- June -- not yet available -- May RX J0152-23 Jul 15 1999 7:58AM 01 52 13.68 -23 30 46.80 30 K. LEIGHLY RX J0323-49 Jul 17 1999 12:48AM 03 24 13.44 -49 37 22.80 32 K. LEIGHLY ACO 1761 May 27 1999 2:08PM 13 33 35.04 +57 43 44.40 46 C. S. BOWYER EUVE J1636 528 Jun 27 1999 10:47AM 16 36 11.50 +52 54 19.00 216 M. BURLEIGH V772 HER Jul 7 1999 2:31PM 18 05 49.68 +21 26 45.24 9 A. K. DUPREE HER X-1 Jul 11 1999 2:27PM 16 57 49.70 +35 20 33.00 95 B. BOROSON HER X-1 Jul 28 1999 4:49AM 16 58 16.56 +35 31 55.21 131 D. A. LEAHY 2EUVE J0138 253 Aug 24 1999 12:25AM 01 38 52.80 +25 23 25.00 252 J. DUPUIS April VIRGO ARC May 18 1999 3:38AM 12 30 34.32 +12 28 40.80 89 C. S. BOWYER CASG 1043 May 25 1999 4:41PM 12 42 25.68 +33 25 01.20 43 C. S. BOWYER ACO 1608 Jun 7 1999 1:44AM 12 45 37.00 +33 23 18.00 44 C. S. BOWYER 3C 279 May 17 1999 4:38PM 12 56 22.32 -05 39 28.80 9 C. S. BOWYER ACO 1790 May 21 1999 3:04PM 13 46 58.08 +54 07 37.20 47 C. S. BOWYER March SS CYG Jun 7 1999 8:10AM 21 42 42.96 +43 35 08.52 251 C. W. MAUCHE MARS Apr 4 1999 5:59AM 14 34 21.79 -13 05 56.02 256 G. R. GLADSTONE February EK UMA Dec 23 1998 10:04PM 10 51 35.28 +54 04 31.07 150 S. B. HOWELL ESO 242-G8 Jun 3 1999 10:13PM 00 25 01.20 -45 29 55.00 31 K. LEIGHLY CBS 126 May 4 1999 12:49PM 10 13 03.20 +35 51 24.00 28 K. LEIGHLY ACO 0950 Mar 22 1999 6:54PM 10 14 39.00 +49 49 06.00 46 C. S. BOWYER ACO 1795 May 29 1999 11:49AM 13 48 52.80 +26 35 31.92 130 C. S. BOWYER RX J14226 5801 May 31 1999 6:58PM 14 22 39.00 +58 01 55.00 55 C. S. BOWYER ACO 2214 Jun 6 1999 2:09AM 16 37 45.00 +37 54 06.01 46 C. S. BOWYER NISM DOWNWIND Dec 10 1998 3:59PM 02 58 41.28 +12 20 16.80 12 B. C. FLYNN January V834 CEN Feb 8 1999 5:49PM 14 09 07.55 -45 17 17.80 153 C. W. MAUCHE M87 Feb 18 1999 1:50AM 12 30 49.50 +12 23 24.00 73 R. LIEU 3C 279 Mar 11 1999 12:17PM 12 56 11.00 -05 47 22.00 93 C. S. BOWYER COMA SUBCLUSTER Mar 15 1999 9:39PM 12 57 25.00 +27 29 48.00 114 C. S. BOWYER ACO 2149 Mar 7 1999 1:49PM 16 01 48.00 +53 57 00.00 42 C. S. BOWYER ACO 2199 Feb 27 1999 5:03PM 16 22 05.52 +40 19 33.60 11 R. LIEU EUVE J1636 528 Feb 28 1999 2:29AM 16 36 11.50 +52 54 19.00 216 M. BURLEIGH MOON Jan 24 1999 8:16AM 01 47 14.16 +06 29 20.85 7 B. C. FLYNN 2.6 EUVE Publications: January - June 2000 ------------------------------------------ The full EUVE bibliography (1978 to present) is available at: http://www.cea.berkeley.edu/~science/html/Resources_pubs_euvebib.html Following is citation and abstract information for all known publications released over the first and second quarters (January through June) of 2000. Abstracts of these papers are available at the NASA Astrophysics Data System: http://adswww.harvard.edu/abstract_service.html. Cataclysmic Variables EUVE Observations of OY Carinae in Superoutburst, C.W. Mauche and J.C. Raymond, ApJ, accepted April 2000. Simultaneous Extreme Ultraviolet Explorer and Rossi X-Ray Timing Explorer Observations of AM Herculis, D.J. Christian, AJ, 119, p. 1930, April 2000. Extreme Ultraviolet Explorer and Optical Observations of the Magnetic Cataclysmic Variables RX J1015.5+0904 and V405 Auriga (RX J0558+5353), P. Szkody, J. Armstrong, and R. Fried, PASP Supplement, 112, 228, February 2000. Extragalactic Extreme Ultraviolet Emission for Abell 4059, T. Berghoefer, S. Bowyer, and E. Korpela, ApJ, accepted June 2000. Extreme Ultraviolet Explorer Observations of Clusters of Galaxies: Virgo and M87, T.W. Berghöfer, S. Bowyer, and E. Korpela, ApJ, 535, p. 615, June 2000. Simultaneous EUV and X-ray variability of NGC 4051, P. Uttley, I.M. McHardy, I.E. Papadakis, I. Cagnoni, and A. Fruscione, MNRAS, 312, p. 880, March 2000. Interstellar Medium The Three-dimensional Structure of the Warm Local Interstellar Medium. II. The Colorado Model of the Local Interstellar Cloud, S. Redfield and J.L. Linsky, ApJ, 534, p. 825, May 2000. Early Type What is the Nature of the Companion of lambda Scorpii?, T. Berghoefer, S. Vennes, and J. Dupuis, ApJ, accepted March 2000. Neutron Stars and LMXBs Hercules X-1: Empirical Models of UV Emission Lines, B. Boroson, T. Kallman, M. Still, S.D. Vrtilek, J.C. Jaymond, and H. Quantrell, ApJ, 529, p. 414, January 2000. Solar System and EUV Solar Astronomy EUVE Search for X-rays from Comets Encke, Mueller (C/1993 A1), Borrelly, and Postperihelion Hale-Bopp, V.A. Krasnopolsky, M.J. Mumma, and M.J. Abbott, Icarus, 146, p. 152, July 2000. 196th AAS Meeting, June 2000 (in BAAS 32, no. 2) Active Stellar Coronae: Lots of Little Flares?, J.J. Drake, V.L. Kashyap, M. Audard and M. Guedel, session 54, presentation 7. Bayesian Analysis of the High-Energy Tail of Sigma Gem, E. Sourlas, Y. Yu, D.A. Van Dyk, V.L. Kashyap, and J.J. Drake, session 54, presentation 2. A Configurable Internet Telemetry Server / Remote Client System, W.T. Boyd, A. Hopkins, M.J. Abbott, and F.R. Girouard, session 32, presentation 3. Constraints on Models of Cometary x-ray Emission with EUV and Soft X-ray Spectrophotometry, C.M. Lisse, D.J. Christian, and K. Dennerl, session 13, presentation 8. The Coronal Structure of II Pegasi from Chandra/HETGS and EUVE Spectra, D.P. Huenemoerder, N.s. Schulz, C.R. Canizares, and D.L. Buzasi, session 37, presentation 6. The EUVE and the Ionization in the Local Interstellar Cloud, R. Lallement, E. Quemerais, J.L. Bertaux, B. Wolff, and D. Koester, session 13, presentation 3. The EUVE Legacy Science Program, S.B. Howell, J.L. Cullison, and R.F. Malina, session 13, presentation 9. The EUVE Mission at UCB: Squeezing More From Less, B.A. Stroozas, J.L. Cullison, K.E. McDonald, R. Nevitt, and R.F. Malina, session 32, preesentation 2. EUVE Observations of Hercules X-1, D.A. Leahy and H.L. Marshall, session 13, presentation 7. The EUVE Permanent Archive at HEASARC and MAST, D.J. Christian, T. McGlynn, S. Drake, N.E. White, P. Newman, M. Postman, R.J. Hanisch, M. Donahue, C. Imhoff, T. Kimball, K. Levay, P. Padovani, M. smith, R.W. Thompson, R.F. Malina, and B. Stroozas, session 13, presentation 2. EUVE TOO Helps Reveal Stages of Optical, X-ray, and EUV Emission Observed in SS Cygni Outburst, J.A. Mattai, C.W. Mauche, and P.J. Wheatly, session 13, presentation 6. Flare Distributions and Coronal Heating on FK Aqr, V.L. Kashyap, J.J. Drake, M. Audard, and M. Guedel, session 13, presentation 5. Multi-Mission Collaboration: Update on the EUV Sky, R.F. Malina, S.B. Howell, J.L. Cullison, B.A. Stroozas, session 13, presentation 1. Preliminary Results of the EUVE Slew Survey: Aug 1993 - Feb 2000, K.E. McDonald, D. J. Christian, and R.F. Malina, session 53, presentation 9. Probing the Multi-Wavelength Nature of Stellar Flares, R.A. Osten, A. Brown, T.R. Ayres, and J.L. Linsky, session 13, presentation 4. Rising from the Dead: the Revival of the EUVE E/PO, J.L. Cullison, N. Craig, B.A. Stroozas, and R.F. Malina, session 24, presentation 5. 195th AAS Meeting, January 2000 (in BAAS 31, no. 5) Automated "Batch" Processing for EUVE Science Data, J. F. Thorsness, W. Boyd, B.A. Stroozas, and R.F. Malina, session 82, presentation 7. "Big Bang" for NASA's Buck: Nearly Three Years of EUVE Mission Operations at UCB, B.A. Stroozas, R. Nevitt, K.E. McDonald, J. Cullison, and R.F. Malina, session 82, presentation 5. Capella: Coronal Variability from EUVE, A.K. Dupree, N.S. Bridkhouse, and J. Sanz-Forcada, session 76, presentation 3. Chandra Sees Its First Stellar Flares: Results from Coordinated Chandra, EUVE, HST STIS, and VLA Observations of HR 1099, R.A. Osten, T.R. Ayres, A. Brown, D. Huenemoerdr, J.J. Drake, J.L. Linsky, and N. Brickhouse, session 112, presentation 14. A Direct Measurement of Hydrogen Column Density towards Sirius B by EUVE Photometry at 60 nm, J. Vallerga and J. Dupuis, session 72, presentation 3. The EUVE Electronic Proposal Review (EPR) System, J.L. Cullison, W. Boyd, B.A. Stroozas, and R.F. Malina, session 82, presentation 7. EUVE and IR observations of the Polars HU Aqr and AR UMa, S.B. Howell and D. Ciardi, session 40, presentation 9. EUVE Spectroscopy and Variability Analysis of beta Canis Majoris in the 300-700 \AA Band, N.A. Miller, D.H. Cohen, J.P. Cassinelli, and G.J. Peters, session 50, presentation 11. FUSE Observations of the Hot DA White Dwarf GD 394, P. Chayer, J.W. Kruk, P. Barrett, and FUSE Science Team, session 6, presentation 19. Probing the Local ISM with Hot White Dwarfs, J.B. Holberg, F.C. Bruhweiler, M.A. Barstow, and P.D. Dobbie, session 72, presentation 1. Re-Observing Several EUV Excess Clusters with In Situ Background Measurements by Pointings at Small Offset, J.P.D. Mittaz, R. Lieu, and M. Bonamente, session 10, presentation 8 (also oral: session 64, presentation 5). A Search for Helium in Ultra-Massive White Dwarfs Atmospheres, J. Dupuis, S. Vennes, and P. Chayer, session 36, presentation 1. Other Conferences The EUV Emission-Line Spectrum of OY Carinae in Superoutburst: Scattering in the Wind, C.W. Mauche and J.C. Raymond, RMxAC, session9, presentation 232, May 2000. Active Late-Type Stellar Coronae: Hints for Flare Heating?, M. Audard, M. Gudel, J.J. Drake, V. Kashyap, and E.F. Guinan, IAUS, session 195, presentation 377, May 2000. -------------------------------------------------------------------------- The EUVE Electronic Newsletter is issued by the Center for Extreme Ultraviolet Astrophysics, University of California, Berkeley, CA 94720, USA. The opinions expressed are those of the authors. EUVE Principal Investigator and Newsletter Publisher: Dr. Roger F. Malina. EUVE Newsletter Editor: Jennifer Cullison. Funded by NASA/UCB Cooperative Agreement NCC5-138. Send newsletter correspondence to ceanews@cea.berkeley.edu. The EUVE project is managed for NASA by UCB: Dr. Roger F. Malina, EUVE Observatory Director; Drs. Brian Flynn and Jean Dupuis, EUVE Observatory Deputy Directors; Mr. Brett Stroozas, EUVE Project Manager; Mr. Rob Nevitt, EUVE Operations Manager. NASA HQ: Dr. Guenter Riegler, Program Manager. EUVE Science Advisory Board: Dr. Steve Howell (Chair). END-----------EUVE------------ELECTRONIC---------------NEWS-------------END