On the optical identifications of five X-ray sources

Details On the optical identifications of five X-ray sources On the optical identifications of five X-ray sources

Sep 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977natur.269...21b&link_type=abstract

Nature, vol. 269, Sept. 1, 1977, p. 21-25.

Astronomy and Astrophysics

Astronomy

48

Collimators, Spaceborne Astronomy, Visual Observation, X Ray Astronomy, X Ray Sources, Position (Location), Radiant Flux Density, Sas

Scientific paper

The data from a recently completed survey of the galactic plane with the SAS-3 modulation collimators provide precise (20 to 60 arcsec) celestial positions of galactic X-ray sources. Preliminary positions of 60-arcsec precision are reported for five sources. One of these led to the identification of the star, Gamma Cas, as an X-ray source, and the others lend substantial confidence to previously proposed optical identifications: 3U 0352+30 = X Per, 3U 1145-61 = HEN 715, GX301-2 = WRA977, and GX304-1 = MMV star. These identifications seem to establish the existence of a previously suggested class of Be-star X-ray emitters.

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