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ELECTRONIC NEWSLETTER OF THE EUVE OBSERVATORY
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Vol. 8, No. 1 3 August 1999 ISSN 1065-3597
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(C) 1999, Regents of the University of California
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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).
This is the first issue of the newsletter since December 1997.
Though it has been the interest of the EUVE project to
continue the newsletter as events warrant (e.g., on a quarterly basis),
the absence of newsletter publications over the last 19 months is by no means
an indication of a lack of interesting science and innovation coming out
of the project. Though the project continues to operate despite shrinking
mission staffing and budgetary resources, we are now redoubling our efforts
to distribute the newsletter on a quarterly basis.
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
1.3 Lessons Learned
2. EUVE Science News
2.1 Science Highlights
2.2 Upcoming AO for EUVE Cycle 8
2.3 EUVE Science Advisory Board FY98 Report
2.4 EUVE Right Angle Program (RAP) Report
2.5 Recent EUVE Director's Discretionary Time (DDT) Observations
2.6 Recent EUVE Calibration Observations
2.7 Recent EUVE Data Releases
2.8 EUVE Publications: April - July 1999
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 second quarter of 1999 are:
June: EUVE Spacecraft in Safe Hold Mode (SHM)
EUVE Flight Operations Team Reconditions Flight Batteries
EUVE Conducts Science Calibration Observations
UCB Initiates Work for Potential EUVE Flight Software Patch
May: EUVE Project to Support FAST and HESSI
EUVE Data Analysis Network "Hacked"
EUVE Distributes "Lessons Learned" Document
April: EUVE Encounters Power Monitor (PMON) Timing Glitch
Unusual Circumstances Lead to EUVE Course Sun Sensor (CSS) "Failure"
UCB Patches EUVE Ground Software
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 17 different targets over the second quarter of 1999
including 3C 279, 3C 345, ACO 0950, ACO 1608, ACO 1795, ACO 2149,
ACO 2214, CBS 126, Coma Subcluster, EK Uma, ESO 242-G8,
EUVE J1636+528, M87, the Moon, NGC 4051, RX J14226+5801,
and SS Cyg.
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_call98_euvelog.html
1.3 Lessons Learned
-------------------
In April 1999, Project Manager Brett Stroozas completed a report to NASA
detailing CEA insights in mission operations, organization, and science.
Details are available at:
http://www.cea.berkeley.edu/~pubinfo/html/CEA_lessonslearned.html
2. EUVE Science News
====================
2.1 Science Highlights
----------------------
June: First Ever Time-Resolved Spectroscopy of a Cataclysmic Variable
- AR UMA - via EUVE
April: EUVE Finds Evidence for Stratification of N Abundance in White Dwarf
RE_J1032+532
Details and previous months' highlights are available at:
http://www.cea.berkeley.edu/~science/html/Resources_high.html
2.2 Upcoming AO for EUVE Cycle 8
--------------------------------
The EUVE Science Advisory Board and the EUVE Project Director have agreed to
release an eighth announcement of opportunity for EUVE Guest Observers
in August 1999. EUVE observers will be informed as soon as details are
set. The general public will be informed via the Bulletin of the American
Astronomical Society electronic announcements and the EUVE website.
2.3 EUVE Science Advisory Board FY98 report
-------------------------------------------
The EUVE Science Advisory Board submitted its FY98 report to NASA
in July 1999.
The report is available at:
ftp://ftp.cea.berkeley.edu/pub/reports/esab/FY98_ESAB_report_ver11.txt
2.4 EUVE Right Angle Program (RAP) Report
-----------------------------------------
The EUVE project no longer supports a formal EUVE RAP(Right Angle Program)
but we still take RAP data and Dr. Damian Christian - now at STScI - analyses
the data through an ADP funded program.
Here is status report on RAP from Dr. Christian:
Our recent second RAP catalog (The Second Extreme Ultraviolet Explorer
Right Angle Program Catalog, D.J. Christian, N. Craig, W. Cahill,
B. Roberts, R.F. Malina, AJ, 117, p. 2466, May 1999) presents the
detection of 235 extreme ultraviolet sources, of which 169 were new
detections. These observations covered the interval between January 1994
(end of first RAP catalog) and November 1998 with a sky coverage of
17%. This catalog also presents the discovery of a 23.7 hour period
from DA white dwarf GD 394 and detections of stellar flares from
about one dozen late-type stars, including the AU Mic-like flare from
M star EUVE J1438-432. RAP data from November 1998 to April 1999 has
been analyzed and includes ~20 source detections with about 12 new
sources. Analysis of more current RAP data is continuing until this
fall, and a renewal ADP was applied for.
2.5 Recent EUVE Observations on Director's Discretionary Time (DDTs)
--------------------------------------------------------------------
estimated
exposure awarded EUVE
Obs. Completed PI Target(s) ksec ksec cycle
-------------- -- --------- ---- ---- -----
July 4, 1998 Vallerga Near Sun 15 30 6
Aug. 6, 1998 Stefl mu Cen 51 10 6
Oct. 24, 1998 Christian 75 Peg 24 24 6
Nov 30, 1998 Vallerga Sirius B 64 20 6
Dec 10, 1998 Flynn NISM Downwind 24 10 6
Feb. 7, 1999 Bowyer Coma Cluster 65 100 6
Mar 24, 1999 Fruscione NGC 4051 30 29 7
May 25, 1999 Starrfield Nova Velorum 3 3 7
July 11, 1999 Bowyer ACO 1795 152 160 7
TBD Lisse Comet TBD 100 7
EUVE DDTs do not have proprietary rights. Interested parties should be able
to download this data from STScI (see "Recent EUVE Data Releases" below).
2.6 Recent EUVE Calibration Observations
----------------------------------------
est. exposure
Obs. Completed Target ksec
------------- ------ ----
May 17, 1999 HZ_43 82
May 21, 1999 GD_153 4
June 16, 1999 Sco_X-1 24
Calibration observations for Cycle 7 were conducted in May and June 1999.
The bright white dwarf HZ43 was observed on May 16 and 17 using all
quadrants of the Scanners and using the Spectrometers in order to test for
loss of sensitivity. The white dwarf GD153 was similarly observed on
21 May using the DS/lexan imager. The bright X-ray source Sco X1 was
observed on 23 May and 16 June in order to obtain the X-ray responses of
the Scanner lexan and Al/Ti/C quadrants, and the DS/lexan quadrant.
Analysis of these new calibration observations is now being conducted.
EUVE calibration observations do not have proprietary rights. Interested
parties should be able to download this data from STScI (see "Recent EUVE
Data Releases" below).
2.7 Recent EUVE Data Releases
-----------------------------
In response to several requests, we will again be sending you regular
notices regarding releases of EUVE data.
Attached is a list of data released between 1 May and 1 July 1999.
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 STScI at
http://archive.stsci.edu/cgi-bin/euve
Exp. Type Release
Object Name Obs Date (ks) Observer Spec Date
----------- -------- ---- ------------ ---- ----------
2330-2005 Sep 30 1998 11 C.S.BOWYER PULS May 1 1999
2EUVE_J0237-12.3 Aug 8 1998 81 J.DUPUIS DA May 1 1999
2EUVE_J0237-12.3 Aug 13 1998 83 J.DUPUIS DA May 1 1999
2EUVE_J0237-12.3 Oct 1 1998 17 J.DUPUIS DA May 1 1999
2EUVE_J0356-36.6 Oct 11 1998 179 D.J.CHRISTIAN G2V May 1 1999
ACO_3158 Aug 3 1998 14 R.LIEU OTHER May 1 1999
ACO_3158 Aug 5 1998 5 R.LIEU OTHER May 1 1999
ACO_3158 Sep 30 1998 19 R.LIEU OTHER May 1 1999
EUVE_J0356-366 Oct 11 1998 179 D.J.CHRISTIAN G2V May 1 1999
EUVE_J0521-104 Sep 24 1998 111 D.S.FINLEY DA May 1 1999
II_PEG Sep 11 1998 113 S.M.WHITE K0V May 1 1999
MBM_2 Oct 6 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 6 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 6 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 6 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 7 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 7 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 8 1998 5 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 8 1998 5 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 8 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 8 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 8 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 9 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 9 1998 5 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 9 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 9 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 9 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 10 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 10 1998 5 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 10 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 10 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 7 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 7 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 7 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 10 1998 6 T.W.BERGHOEFER OTHER May 1 1999
MBM_2 Oct 11 1998 6 T.W.BERGHOEFER OTHER May 1 1999
PKS_2005-489 Sep 16 1998 101 R.M.SAMBRUNA EX May 1 1999
RXJ0558_5353 Oct 2 1998 100 P.SZKODY CV May 1 1999
UZ_FOR Sep 22 1998 35 S.B.HOWELL CV May 1 1999
2EUVE_J0521-10.4 Oct 18 1998 66 D.S.FINLEY DA Jun 1 1999
HD_222133 Oct 23 1998 23 D.J.CHRISTIAN A1VN Jun 1 1999
UZ_FOR Aug 21 1998 32 S.B.HOWELL CV Jun 1 1999
UZ_FOR Oct 22 1998 32 S.B.HOWELL CV Jun 1 1999
2.8 EUVE Publications: April - July 1999
----------------------------------------
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 publications
released over the second quarter (April through June) of 1999. Due to
delayed publication of this newsletter, July 1999 is included as well.
Abstracts of these papers are available at the NASA Astrophysics Data System:
http://adswww.harvard.edu/abstract_service.html.
Late Type Stars
---------------
Observation of Quasi-Continuum Line Emission from FE VII to FE X in the
Extreme-Ultraviolet Region below 140 Å, P. Beiersdorfer, J.K. Lepson,
G.V. Brown, S.B. Utter, S.M. Kahn, D.A. Liedahl, C.W. Mauche, ApJ Letters,
519, p. 185, July 1999.
Stellar Coronal Abundances. VI. The First Ionization Potential Effect
and xi Bootis A: Solar-like Anomalies at Intermediate-Activity Levels,
J.M. Laming, J.J. Drake, ApJ Letters, 516, p. 324, May 1999.
The Response of the EUVE Scanning and Deep Survey Telescopes to Coronal
Plasma Radiative Loss, J. Drake, ApJ Supplement, 122, p. 269, May 1999.
The Active Corona of HD 35850 (F8 V), M. Gagne, J. A. Valenti, J. L. Linsky, G.
Tagliaferri, S. Covino, and M. Gudel, ApJ, 515, p. 423, April 1999.
Detection of a Strong Stellar Flare from EUVE J1438-432, D.J. Christian,
S. Vennes, AJ, 117, 1852, April 1999.
White Dwarfs
------------
The EUV spectrum of the unique bare stellar core H1504+65, K. Werner and
B. Wolff, A&A Letters, 347, p.9, July 1999.
Far-Ultraviolet Space Telescope Imaging Spectrometer Spectra of the
White Dwarf REJ 1032+532. I. Interstellar Line of Sight, J.B.
Holberg, F.C. Bruhweiler, M.A. Barstow, P.D. Dobbie, ApJ, 517,
p. 841, June 1999.
A Comparative Study of the Mass Distribution of Extreme-Ultraviolet-selected
White Dwarfs, R. Napiwotzki, P.J. Green, R.A. Saffer, ApJ, 517, p. 399,
May 1999.
Cataclysmic Variables
---------------------
Extreme Ultraviolet Explorer Photometry of RS Canum Venaticorum Systems:
Four Flaring Megaseconds, R.A. Osten, A. Brown, ApJ, 515, 7460, April 1999.
Extragalactic
-------------
High- and Low-Energy Nonthermal X-Ray Emission from the Abell 2199 Cluster
of Galaxies, J.S. Kaastra, R. Lieu, J.P.D. Mittaz, J.A.M. Bleeker, R. Mewe,
S. Colafrancesco, F.J. Lockman, ApJ Letters, 519, p. 119, July 1999.
Extreme-Ultraviolet Images of the Clusters of Galaxies A2199 and A1795:
Clear Evidence for a Separate and Luminous Emission Component, R. Lieu,
M. Bonamente, and J.P.D. Mittaz, ApJ Letters, 517, p. 91, June 1999.
On the Extreme-Ultraviolet Emission from Galaxy Clusters, J.S. Arabadjis,
J.N. Bregman, ApJ, 514, 607, April 1999.
Interstellar Medium
-------------------
Evidence for an ionization gradient in the local interstellar medium: EUVE
observations of white dwarfs. B. Wolff, D. Koester, R. Lallement, A&A,
346, p. 969, June 1999.
Catalogs
--------
The Second Extreme Ultraviolet Explorer Right Angle Program Catalog,
D.J. Christian, N. Craig, W. Cahill, B. Roberts, R.F. Malina, AJ,
117, p. 2466, May 1999.
Conference Presentations
------------------------
194th AAS Meeting, June 1999 in BAAS, 31, no. 3
------------------------------------------------
Mapping the Local Bubble Region using EUV sources, B. Y. Welsh,
M. Sirk, D.M. Sfeir, R. Lallement, N. Craig, session 72, presentation 3.
Resources Available through the Multimission Archive at Space Telescope
(MAST), C. Imhoff, F. Abney, D. Christian, M. Donahue, R. Hanisch, T. Kimball,
K. Levay, P. Padovani, M. Postman, M. Smith, R. Thompson, session 83,
presentation 2.
31st AAS High Energy Astrophysics Division Meeting, April 1999 in BAAS, 31, no. 2
---------------------------------------------------------------------------------
The 1998 ASCA/EUVE Campaign on the Active Binary Ux Ari, S. A. Drake, N. E.
White, A. K. Dupree, N. S. Brickhouse, J. Sanz-Forcada, and K. P. Singh,
session 9, presentation 6.
The ASCA/EUVE Campaign: Structure and Abundances of the Eclipsing Binary Ar Lac,
N. S. Brickhouse, A. K. Dupree, J. Sanz-Forcada, S. A. Drake, N. E. White, and
K. P. Singh, session 9, presentation 9.
A Break in the Power Spectrum of Mrk 421, I. Cagnoni, A. Fruscione, and I. E.
Papadakis, session 3, presentation 2.
Cataloguing the Lines from the Intermediate Charge States of Iron, Fevii through
Fexxiv, in the Extreme Ultraviolet Below 150Angstroms, J. K. Lepson, P.
Beiersdorfer, G. V. Brown, D. A. Liedahl, C. W. Mauche, S. B. Utter, and S. M.
Kahn, session 9, presentation 8.
The Continuum Spectrum and Flaring Light Curve from A Long EUVE Observation of
the Agn 1h0419-577, H. L. Marshall, J. P. Halpern, and K. M. Leighly,
session 2, presentation 3.
The Origin of the EUV Emission in Her X-1, D. A. Leahy, and H. L. Marshall,
session 27, presentation 1.
The Package for INTeractive Analysis of Line Emission (PINTofALE), J. J. Drake,
and V. Kashya, session 13, presentation 31.
Quasi-Continuum Line Emission from Fe Vii--X in the Extreme Ultraviolet Region
Below 120 Angstroms, P. Beiersdorfer,J.K. Lepson, G. V. Brown, D. A. Liedahl,
C. W. Mauche, S. B. Utter, and S. M. Kahn, session 9, presentation 7.
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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