Spectral Classification of Optical Counterparts to ROSAT All-Sky Survey X-ray Sources

Details Spectral Classification of Optical Counterparts to ROSAT All-Sky Survey X-ray Sources Spectral Classification of Optical Counterparts to ROSAT All-Sky Survey X-ray Sources

2007-02-16

arxiv.org/abs/astro-ph/0702446v1

Astron.J.133:2495-2501,2007

Astronomy and Astrophysics

Astrophysics

25 pages, 7 figures

Scientific paper

10.1086/516755

Previous work statistically identified 5492 optical counterparts, with approximately 90% confidence, from among the approximately 18,000 X-ray sources appearing in the ROSAT All-Sky Survey Bright Source Catalog (RASS/BSC). Using low resolution spectra in the wavelength range 3700-7900 angstroms, we present spectroscopic classifications for 195 of these counterparts which have not previously been classified. Of these 195, we find 168 individual stars of F, G, K or M type, 6 individual stars of unknown type, 6 double stars, 6 AGN or galaxies and 7 unclassifiable objects; the spectra of the 2 remaining objects were saturated.

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