A search for optical counterparts of nine galactic X-ray sources.
Abstract
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.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- January 1976
- DOI:
- 10.1086/154096
- Bibcode:
- 1976ApJ...203..448D
- Keywords:
-
- Astronomical Catalogs;
- Astronomical Photometry;
- Astronomical Spectroscopy;
- Galactic Radiation;
- X Ray Sources;
- Binary Stars;
- Photographic Measurement;
- Radio Galaxies;
- Spectrophotometry;
- Astronomy