53 citations · 169 across the 14 of their papers we have counts for
11 papers · 2 filters
Supersoft and Quasisoft X-Ray Sources in the Globular Clusters of NGC 4472: Are they candidates for intermediate-mass black holes?
R. Di Stefano, R. Friedman, A. Kundu +1
We report on possible associations between 6 globular clusters in the Virgo elliptical galaxy NGC 4472 (M49) and bright ( erg s) very soft X-ray sources (VSSs…
Chandra ACIS and Newton EPIC Observations of the X-ray Luminous SN1978K in NGC 1313
Eric M. Schlegel, Albert Kong, Philip Kaaret +2
We describe an observation of the X-ray luminous SN1978K in NGC 1313 using the ACIS detector on Chandra and an archival Newton EPIC observation. The models that provided good fits…
Selecting Very Soft X-Ray Sources in External Galaxies: Luminous Supersoft X-ray Sources and Quasisoft Sources
R. Di Stefano, A. K. H. Kong
We introduce a procedure to identify very soft X-ray sources (VSSs) in external galaxies. Our immediate goal was to formulate a systematic procedure to identify luminous supersoft…
The Discovery of Quasisoft and Supersoft Sources in External Galaxies
R. Di Stefano, A. K. H. Kong
We apply a uniform procedure to select very soft sources from point sources observed by Chandra in 4 galaxies. This sample includes one elliptical galaxy (NGC 4967), 2 face-on spir…
XMM-Newton observation of the X-ray point source population of the starburst galaxy IC342
Albert Kong
We present the results of an XMM-Newton observation of the starburst galaxy IC342. Thirty-seven X-ray point sources were detected down to a luminosity limit of \lum.…
X-ray Point Sources in the Sombrero Galaxy: Supersoft sources, the globular cluster/LMXB connection, and an overview
R. Di Stefano, A. K. H. Kong, M. L. VanDalfsen +3
We report on the population of point sources discovered during an 18.5 ksec Chandra ACIS-S observation of the Sombrero Galaxy. We present the luminosity function, the spectra of th…