Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996rftu.proc..665z&link_type=abstract
International Conference on X-ray Astronomy and Astrophysics: Röntgenstrahlung from the Universe, p. 665 - 666
Astronomy and Astrophysics
Astrophysics
1
X-Ray Surveys: Optical Identifications, X-Ray Sources: Optical Identifications, X-Ray Sources: Active Galactic Nuclei, X-Ray Sources: Clusters Of Galaxies, X-Ray Sources: Stellar Coronae, X-Ray Binaries
Scientific paper
The authors present results of a program for optical identification of a representative sample of RASS sources contained in 5 study areas north of δ = -9° with |bII| > 25° including one region near the North Galactic Pole (NGP) and one near the North Ecliptic Pole (NEP). For a count rate and area limited complete subsample comprising 534 sources observations and/or literature identifications exist. The authors found a dependency of the ratio of "extragalactic" (e.g. AGN, cluster of galaxies) to "stellar" (e.g. coronal emitters, active binaries) counterparts on NH. In the area near the NGP (low NH) "extragalactic" counterparts dominate, while in the area with the highest NH "stellar" counterparts dominate.
Appenzeller Immo
Kneer R.
Krautter Joachim
Mujica Raúl
Serrano Alfonso
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