X-ray Stacking of Globular Clusters in M31 Bulge
Abstract
Bright X-ray sources with luminosity above 10(35) ergs/s have been discovered in globular clusters (GCs) in M31 bulge with more than 1 M seconds of Chandra exposure. In this work we stack non X-ray detection GCs within 8' of M31 nuclei to study their X-ray properties and the relation to GC parameters. The results show an average X-ray luminosity of ∼ 9.0E33 ergs/s per GC. We further discuss effects of GC mass, metallicity, and the distance to M31 center. We also compare the results to X-ray properties of Milky Way GCs.
- Publication:
-
40th COSPAR Scientific Assembly
- Pub Date:
- 2014
- Bibcode:
- 2014cosp...40E3671X