期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 499, 期 3, 页码 3111-3129出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/staa2846
关键词
(Star:) binaries: symbiotic; X-rays: binaries; galaxies: dwarf galaxies
资金
- Deutsches Zentrum fur Luftund Raumfahrt (DLR) [BWWI/DLR 500R1907]
- Deutsche Forschungsgemeinschaft (DFG) [SA 2131/12-1]
- ESA Member States
- NASA
- National Aeronautics and Space Administration
- National Science Foundation
- Alfred P. Sloan Foundation
- US Department of Energy Office of Science
We present the results of the analysis of three XMM-Newton observations of the Willman 1 dwarf spheroidal galaxy (Wil 1). X-ray sources are classified on the basis of spectral analysis, hardness ratios, X-ray-to-optical flux ratio, X-ray variability, and cross-correlation with available catalogues in optical and infrared wavelengths. We catalogued 97 sources in the field of Wil 1. Our classification shows the presence of a beta-type symbiotic star in Wil 1. We classified one M dwarf foreground star in the field of Wil 1. Moreover, 54 sources are classified as background active galactic nuclei and galaxies. Our study shows that the luminosity of the X-ray sources of Wil 1 does not exceed similar to 10(34) erg s(-1) in the energy range of 0.2-12.0 keV, which is similar to observed luminosities of sources in nearby dwarf spheroidal galaxies.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据