The Einstein Objective Grating Spectrometer Survey of Galactic Binary X-Ray Sources
Abstract
The results of observations of 22 bright Galactic X-ray point sources are presented, and the most reliable measurements to date of X-ray column densities to these sources are derived. The results are consistent with the idea that some of the objects have a component of column density intrinsic to the source in addition to an interstellar component. The K-edge absorption due to oxygen is clearly detected in 10 of the sources and the Fe L and Ne K edges are detected in a few. The spectra probably reflect emission originating in a collisionally excited region combined with emission from a photoionized region excited directly by the central source.
- Publication:
-
The Astrophysical Journal Supplement Series
- Pub Date:
- August 1991
- DOI:
- 10.1086/191594
- Bibcode:
- 1991ApJS...76.1127V
- Keywords:
-
- Gratings (Spectra);
- Heao 2;
- Proportional Counters;
- X Ray Binaries;
- X Ray Spectroscopy;
- High Resolution;
- Spectral Resolution;
- X Ray Spectra;
- Astrophysics;
- X-RAYS: BINARIES;
- X-RAYS: SPECTRA