Rosat Status#140 - MPE report

[Michael Arida <arida@urania.gsfc.nasa.gov>]

Sender: Michael Arida <arida@urania.gsfc.nasa.gov>
Subject: Rosat Status#140 - MPE report

		ROSAT Status Report #140
			May 14 1996




Redistribution of MPE Report #46

=========================================================================
=                                                                       =
=              ROSAT NEWS No. 46   ---       1-May-1996                 =
=                                                                       =
=-----------------------------------------------------------------------=
=                 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)     =
=   WWW address:  http://astro.uni-tuebingen.de/rosat.html              =
=========================================================================

Contents: SIMBAD OBJECT CLASSIFICATION
          ROSAT DATA ARCHIVE STATUS


SIMBAD OBJECT CLASSIFICATION
============================
In August 1995 an update of the SIMBAD catalogue was received from CDS
and implemented into the standard analysis. Besides an increased number
of objects (956370 instead of 640000) this version contains a 
considerably improved object classification. For software compatibility 
reasons, however, this new classification scheme cannot be fully 
utilized, but has to be mapped onto the original 4 categories: 'stars', 
'galaxies', 'other (clusters, ...)', 'unknown'. In this process, the 
new "composite object" category (containing multiple objects in general,
from double and multiple stars, association of stars, open galactic 
clusters, globular clusters; over pairs, groups, clusters and 
superclusters of galaxies; to underdense regions of the universe) was 
mapped onto the 'clusters, ...' section. This implied in particular that 
stars in double systems were inappropriately mapped onto the 'clusters,
..' category. The mapping algorithm has now been improved and assigns 
these objects (24,062 in total or 2.5 % of all SIMBAD entries) to the 
'stars' category.

Therefore, in the SASS outputs produced between the installation of this
catalog version in autumn 1995 up to April 1996 eclipsing/spectroscopic 
binaries, cataclysmic variables and X-ray binaries may appear under the 
'clusters, ...' section. Please note that this occurred only locally in 
the SASS environment and is not related to the contents of the SIMBAD 
data base at CDS.


ROSAT DATA ARCHIVE STATUS
=========================
MPE processed ROSAT data have been released with public dates until 
April 30, 1996. This brings us up-to-date after a period of backlog. US 
data have been received until December 31, 1995 and will be put on-line 
as soon as possible. Further US data until March 31, 1996 have been
announced to us and should follow soon.
 
====================== end of ROSAT NEWS ================================


_______________________________________________________________________
Michael Arida, (HSTX) ROSAT/ASCA GOF             LHEA/HEASARC
ph: 301-286-2291 (voice)                    Code 664, NASA-Goddard
arida@rosserv.gsfc.nasa.gov                   Greenbelt, MD 20771