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: http://www.sao.ru/cats/doc/RASS-BSC.html
Дата изменения: Wed Mar 18 12:25:11 2015 Дата индексирования: Sun Apr 10 02:27:36 2016 Кодировка: Поисковые слова: mercury surface |
Ses ALSO ReadMe.CDS about identifications with NED and NVSS.
W. Voges, B. Aschenbach, Th. Boller, H. Bruuninger, U. Briel, W. Burkert, K.
Dennerl, J. Englhauser, R. Gruber, F. Haberl, G. Hartner, G. Hasinger, M.
Karster, E. Pfeffermann, W. Pietsch, P. Predehl, C. Rosso, J.H.M.M. Schmitt,
J. Trumper, and H.-U. Zimmermann
To be published in Astronomy and Astrophysics, 1996.
The catalogue can be used for scientific purposes as long as the above
publication is referenced.
For each source the ROSAT name, the position in equatorial co-ordinates, the
positional error, the source countrate and error, the background countrate,
exposure time, hardness-ratios HR1 and HR2 and errors, extent and likelihood
of extent, and likelihood of detection are provided. For 94% of the sources
visual inspection confirmed the results of the standard processing with
respect to existence and position. The remaining 6% have been analyzed using
interactive methods; these sources have been flagged. Broad band images are
available for a subset of the flagged sources.
A list containing correlations with other catalogues and identifications
will follow soon.
Questions or comments may be directed to survey@rosat.mpe-garching.mpg.de.
In particular we would be grateful if any errors or inconsistencies found in
the data would be reported to this e-mail address.
The ROSAT All-Sky Survey Bright Source Catalogue (1RXS)
Max-Planck-Institut fur extraterrestrische Physik, 85740 Garching, Germany
Abstract
We present the ROSAT All-Sky Survey Bright Source Catalogue (RASS-BSC,
revision 1RXS) derived from the all-sky survey performed during the first
half year of the ROSAT mission in 1990/91. 18,811 sources are catalogued,
with a limiting ROSAT PSPC countrate of 0.05 cts/s in the 0.1-2.4 keV energy
band. The sources have a detection likelihood of at least 15 and contain at
least 15 source photons. At a brightness limit of 0.1 cts/s (8,547 sources)
the catalogue represents a sky coverage of 92%. The typical positional
accuracy is 30 arcsec.
Browsing the catalogue via WWW
Subsets of the catalogue sources - selected by certain properties - may be
retrieved via the
ROSAT Source Browser (also available in a simplified version).
In certain cases, the list provided contains also links to source images.
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Retrieving the full catalogue
The ROSAT All-Sky Survey Bright Source Catalogue can be retrieved via your
WWW browser:
1. Select the 'Load to local disk' option of your WWW browser.
2. Open URL
http://www.rosat.mpe-garching.mpg.de/survey/rass-bsc/rass-bsc-1rxs.cat.gz
3. Be patient - transmission can take a while (catalogue size is 1 MB).
4. Specify a name for the catalogue file in your local computer
environment (recommended: rass-bsc-1rxs.cat.gz).
Alternatively, the catalogue is accessible via anonymous ftp:
ftp ftp.rosat.mpe-garching.mpg.de
user anonymous,