4U 1538-52
Abstract
G. E. Parkes, Mullard Space Science Laboratory; P. Murdin, Anglo-Australian Observatory; and K. O. Mason, University of California at Berkeley, report that star 12 of Cowley et al. (1977, Astrophys. J. 218, L3) in the SAS-3 error circle of 4U 1538-52 is a very reddened B-type star with He I and H-alpha emission. They propose it as the identification for the heavily cut-off and massive x-ray-source binary, and they suggest that it should be observed for the 3.73-day orbital period of the x-ray source.
- Publication:
-
International Astronomical Union Circular
- Pub Date:
- March 1978
- Bibcode:
- 1978IAUC.3184....3P