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X-ray emission from the Sombrero galaxy: a galactic-scale outflow
Zhiyuan Li, Christine Jones, William R. Forman +8
Based on new and archival Chandra observations of the Sombrero galaxy (M 104), we study the diffuse X-ray emission in and around its massive stellar bulge. The 2-6 keV unresolved e…
X-ray emission from the Sombrero galaxy: discrete sources
Zhiyuan Li, Lee R. Spitler, Christine Jones +7
We present a study of discrete X-ray sources in and around the bulge-dominated, massive Sa galaxy, Sombrero (M104), based on new and archival Chandra observations with a total expo…
Analysis of a State Changing Supersoft X-ray Source in M31
Brandon Patel, Rosanne Di Stefano, Thomas Nelson +3
We report on observations of a luminous supersoft X-ray source (SSS) in M31, r1-25, that has exhibited spectral changes to harder X-ray states. We document these spectral changes.…
The Progenitors of Type Ia Supernovae: II. Are they Double-Degenerate Binaries? The Symbiotic Channel
Rosanne Di Stefano
In order for a white dwarf (WD) to achieve the Chandrasekhar mass, M_C, and explode as a Type Ia supernova (SNIa), it must interact with another star, either accreting matter from…
Transits and Lensing by Compact Objects in the Kepler Field: Disrupted Stars Orbiting Blue Stragglers
Rosanne Di Stefano
Kepler's first major discoveries are two hot objects orbiting stars in its field. These may be the cores of stars that have each been eroded or disrupted by a companion star. The c…