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Astronomy Department Faculty Publication Series
* galaxies: general; * galaxies: individual: M31; * galaxies: spiral; * X-rays: general
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Full-Text Articles in Physical Sciences and Mathematics
M31* And Its Circumnuclear Environment, Z Li, Qd Wang, Bp Wakker
M31* And Its Circumnuclear Environment, Z Li, Qd Wang, Bp Wakker
Astronomy Department Faculty Publication Series
We present a multiwavelength investigation of the circumnuclear environment of the Andromeda galaxy (M31), utilizing archival Chandra, FUSE, GALEX, HST and Spitzer data as well as ground-based observations. Based on the Chandra/ACIS data, we tightly constrain the X-ray luminosity of M31*, the central supermassive black hole (SMBH) of the galaxy, to be L0.3−7 keV≲ 1.2 × 1036 erg s−1, approximately one part per 1010 of the Eddington luminosity. From the diffuse X-ray emission, we characterize the circumnuclear hot gas with a temperature of ∼0.3 keV and a density of ∼0.1 cm …