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Issue A&A
Volume 368, Number 3, March IV 2001
Page(s) 835 - 844
Section Galactic structure and dynamics
DOI http://dx.doi.org/10.1051/0004-6361:20010025



A&A 368, 835-844 (2001)
DOI: 10.1051/0004-6361:20010025

A catalogue of soft X-ray sources in the galactic center region

L. Sidoli1, T. Belloni2 and S. Mereghetti3

1  Astrophysics Division, Space Science Department of ESA, ESTEC, Postbus 299, 2200 AG Noordwijk, The Netherlands
2  Osservatorio Astronomico di Brera, Via Bianchi 46, 23807 Merate (Lc), Italy
3  Istituto di Fisica Cosmica "G. Occhialini", CNR, via Bassini 15, 20133 Milano, Italy

(Received 13 October 2000 / Accepted 15 December 2000)

Abstract
We present a catalogue of 107 point-like X-ray sources derived from a systematic analysis of all the ROSAT PSPC observations of the galactic center region performed in 1992-1993. Besides SgrA*, the massive black hole at the galactic center, 41 X-ray sources have been positionally associated with already classified objects. Twenty are identified with foreground stars and five with known Low Mass X-ray Binaries. The majority of the sources in our catalogue still remains unidentified. They are hard and/or severely absorbed and probably represent a large population of X-ray binaries located in the galactic center region, accreting at low accretion rates, and still largely unknown.


Key words: catalogues -- galaxy: center -- X -- rays: general -- X -- rays: stars

Offprint request: L. Sidoli, lsidoli@astro.estec.esa.nl

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© ESO 2001


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