A search for optical counterparts of nine galactic X-ray sources

Details A search for optical counterparts of nine galactic X-ray sources A search for optical counterparts of nine galactic X-ray sources

Jan 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...203..448d&link_type=abstract

Astrophysical Journal, vol. 203, Jan. 15, 1976, pt. 1, p. 448-454.

Astronomy and Astrophysics

Astrophysics

51

Astronomical Catalogs, Astronomical Photometry, Astronomical Spectroscopy, Galactic Radiation, X Ray Sources, Binary Stars, Photographic Measurement, Radio Galaxies, Spectrophotometry

Scientific paper

Results of a photographic and spectrophotometric search to a limiting B magnitude of approximately 18.5 for the optical counterparts of nine galactic X-ray sources with good positions are reported. The sources included in this survey are 3U 1709-23, 1728-16, 1728-24, 1758-20, 1758-25, 1811-17, 1813-14, 1837+04, 1908+00. Optical candidates for six of these sources are discussed, including blue objects which may be the optical counterparts of 1709-23 and 1728-16, a distant B star near 1908+00, and a very unusual strong-emission-line object which is probably associated with 1728-24 (GX 2+5). Coordinates, magnitudes, colors, spectral data, and finding charts are presented.

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