Identification of soft high galactic latitude RASS X-ray sources. II. Sources with PSPC count rate CR <0.5 cts/s

Details Identification of soft high galactic latitude RASS X-ray sources. II. Sources with PSPC count rate CR <0.5 cts/s Identification of soft high galactic latitude RASS X-ray sources. II. Sources with PSPC count rate CR <0.5 cts/s

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...347...47b&link_type=abstract

Astronomy and Astrophysics, v.347, p.47-54 (1999)

Astronomy and Astrophysics

Astrophysics

46

Stars: Novae, Cataclysmic Variables, Galaxies: Active, Galaxies: Nuclei, Galaxies: Quasars: General, Galaxies: Seyfert, X-Rays: General

Scientific paper

We present a summary of spectroscopic identifications of bright soft high galactic latitude X-ray sources from the ROSAT All-Sky Survey with total PSPC count rates 0.11 < CR < 0.5 {cts s(-1) }\ and hardness ratios HR1 < 0. This study supplements the identification program of a complete sample of sources with CR >= 0.5 {cts s(-1) }\ presented previously. Spectroscopic identifications are presented for 70 of 77 sources, 5 sources are identified by other means, and subsidiary information is given for 2 as yet unidentified sources. In practically all cases, a unique optical counterpart exists. As for the brighter fraction of the sample, the largest source classes are Seyfert 1 galaxies, magnetic cataclysmic variables, and hot white dwarfs. In the Galactic Pole caps at | b | ga 40(deg) , Seyfert galaxies dominate, whereas at intermediate latitudes galactic objects as magnetic cataclysmic variables and white dwarfs become relatively more frequent. Based in part on observations with the ESO/MPI 2.2m telescope at La Silla, Chile

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