The Einstein Observatory Extended Medium-Sensitivity Survey. I - X-ray data and analysis

Details The Einstein Observatory Extended Medium-Sensitivity Survey. I - X-ray data and analysis The Einstein Observatory Extended Medium-Sensitivity Survey. I - X-ray data and analysis

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apjs...72..567g&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 72, March 1990, p. 567-619. Research supported by Smithsonian Ins

Astronomy and Astrophysics

Astronomy

577

Heao 2, Sky Surveys (Astronomy), X Ray Sources, Active Galactic Nuclei, Astronomical Catalogs, Astronomical Photometry, Bl Lacertae Objects, Spatial Distribution, Very Large Array (Vla)

Scientific paper

This paper presents the results of the analysis of the X-ray data and the optical identification for the Einstein Observatory Extended Medium-Sensitivity Survey (EMSS). The survey consists of 835 serendipitous sources detected at or above 4 times the rms level in 1435 imaging proportional counter fields with centers located away from the Galactic plane. Their limiting sensitivities are about (5-300) x 10 to the -14th ergs/sq cm sec in the 0.3-3.5-keV energy band. A total area of 778 square deg of the high-Galactic-latitude sky has been covered. The data have been analyzed using the REV1 processing system, which takes into account the nonuniformities of the detector. The resulting EMSS catalog of X-ray sources is a flux-limited and homogeneous sample of astronomical objects that can be used for statistical studies.

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