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ROSAT Status Report # 115
ROSAT Status Report # 115
Jan 6 1995
=========================================================================
= =
= ROSAT NEWS No. 34 --- 23-Dec-1994 =
= =
=-----------------------------------------------------------------------=
= ROSAT Scientific Data Center at the =
= Max-Planck-Institut fuer Extraterrestrische Physik (MPE) =
= Postfach 1603, D-85740 Garching, Germany =
=-----------------------------------------------------------------------=
= e-mail addresses (Uli Zimmermann): =
= rosat_svc@mpe-garching.mpg.de (Internet) or MPE::ROSAT_SVC (SPAN) =
= ROSAT Service Area (including ROSAT Data Archive): =
= ftp rosat_svc.mpe-garching.mpg.de user: anonymous =
= WWW address: http://rosat_svc.mpe-garching.mpg.de/ =
= interactive account (including ROSAT Result Archive): =
= telnet xray.mpe-garching.mpg.de user: xray no password =
=-----------------------------------------------------------------------=
= XUV Center: 29382::GXUVDC or GXUVDC@AIT.PHYSIK.UNI-TUEBINGEN.DE =
= WFC Archive access via telnet/ftp ait.physik.uni-tuebingen.de =
= user: xuv (password: xuv_archive) =
=========================================================================
The data center team at MPE wishes
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Contents: - SATELLITE STATUS
- X-RAY CONFERENCE 1995
- ROSAT SOURCE CATALOGS
- UV STRUCTURES in HRI IMAGES
- EXSAS
SATELLITE STATUS
================
No unusual occurences reported.
X-RAY CONFERENCE 1995 (September 25 to 29, 1995)
================================================
A conference circular will be distributed beginning of February.
ROSAT SOURCE CATALOGS
=====================
The ROSAT Source Catalog is now available as ASCII file rosatsrc.txt-gz
(compressed with gzip) in the ROSAT Service Area, directory
archive/sourcecat. A description of the ASCII file can be found in
rosatsrc.txt-doc. (Access via ftp rosat_svc.mpe-garching.mpg.de
user:anonymous).
Comparisons between the ROSAT Source Catalog and the WGA catalog by
F.Haberl, W.Pietsch, and W.Voges (distributed by e-mail 2 weeks ago)
showed a number of shortcomings in both catalogs. The WGA catalog is
currently being recreated due to a systematic shift of about 17
arcseconds in the coordinates with respect to very accurate positions
of SIMBAD-stars. A detailed discussion and relevant graphs of the
present findings can be found in the file wga_rosatsrc.doc in the same
directory archive/sourcecat. This directory can also be reached via the
ROSAT homepage from mosaic.
Both catalogs will be updated from time to time to include new data
from the ROSAT Data Archive.
UV STRUCTURES IN HRI IMAGES
============================
Caution should be applied when interpreting results from ROSAT HRI
observations due to the HRI sensitivity in the UV band. In a recent
paper of H. Arp entitled "Ultraviolet Extensions Measured with ROSAT
HRI around Active galaxies" (preprint available) it is nicely shown
that the inclusion of the full HRI amplitude range in the analysis may
display structures that are obviously not existing in more sensitive
PSPC data from the same regions. A careful comparison of images produced
in low and high amplitude bands is strongly recommended.
EXSAS
=====
The MIDAS version 94NOV has just arrived. It is expected that versions
of the EXSAS software, tested in the new MIDAS environment, will be
available in the second half of January.
====================== end of ROSAT NEWS ================================