Saeedi S, Sasaki M (2020)
Publication Type: Journal article
Publication year: 2020
Book Volume: 499
Pages Range: 3111-3129
Journal Issue: 3
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 β-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 ∼1034 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.
APA:
Saeedi, S., & Sasaki, M. (2020). XMM-Newton study of X-ray sources in the field of Willman 1 dwarf spheroidal galaxy. Monthly Notices of the Royal Astronomical Society, 499(3), 3111-3129. https://dx.doi.org/10.1093/mnras/staa2846
MLA:
Saeedi, Sara, and Manami Sasaki. "XMM-Newton study of X-ray sources in the field of Willman 1 dwarf spheroidal galaxy." Monthly Notices of the Royal Astronomical Society 499.3 (2020): 3111-3129.
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