Positions and identifications for galactic X-ray sources 2A1822-371 and 2S1254-690

Details Positions and identifications for galactic X-ray sources 2A1822-371 and 2S1254-690 Positions and identifications for galactic X-ray sources 2A1822-371 and 2S1254-690

Nov 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978natur.276..247g&link_type=abstract

Nature, vol. 276, Nov. 16, 1978, p. 247-249.

Astronomy and Astrophysics

Astronomy

22

Astrometry, Galactic Radiation, Position (Location), X Ray Sources, Collimators, Heao, Ultraviolet Spectra

Scientific paper

Precise positions and optical identifications for the galactic X-ray sources 2A1822-371 (4U 1822-37) and 2S 1254-690 (4U 1254-69) were obtained by used of a described scanning modulation collimator on HEAO 1 and are reported. Neither is thought to be substantially reddened since both show strong ultraviolet excesses and are located at a relatively high galactic latitude. The distance of 4U 1254-69 is estimated to be approximately 10 kpc.

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