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SPATIALLY RESOLVED STAR FORMATION IMAGE AND THE ULTRALUMINOUS X-RAY SOURCE POPULATION IN NGC 2207/IC 2163

Author(s)
Mineo, S.; Gilfanov, M.; Pooley, D.; Rappaport, Saul A; Steinhorn, B.; Levine, Alan M; ... Show more Show less
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Abstract
The colliding galaxy pair NGC 2207/IC 2163, at a distance of ~39 Mpc, was observed with Chandra, and an analysis reveals 28 well resolved X-ray sources, including 21 ultraluminous X-ray sources (ULXs) with L X ≿1039 erg s[superscript –1], as well as the nucleus of NGC 2207. The number of ULXs is comparable with the largest numbers of ULXs per unit mass in any galaxy yet reported. In this paper we report on these sources, and quantify how their locations correlate with the local star formation rates seen in spatially resolved star formation rate density images that we have constructed using combinations of GALEX FUV and Spitzer 24 μm images. We show that the numbers of ULXs are strongly correlated with the local star formation rate densities surrounding the sources, but that the luminosities of these sources are not strongly correlated with star formation rate density.
Date issued
2013-07
URI
http://hdl.handle.net/1721.1/93903
Department
Harvard University--MIT Division of Health Sciences and Technology; Massachusetts Institute of Technology. Department of Physics; MIT Kavli Institute for Astrophysics and Space Research
Journal
Astrophysical Journal
Publisher
Institute of Physics/American Astronomical Society
Citation
Mineo, S., S. Rappaport, B. Steinhorn, A. Levine, M. Gilfanov, and D. Pooley. “SPATIALLY RESOLVED STAR FORMATION IMAGE AND THE ULTRALUMINOUS X-RAY SOURCE POPULATION IN NGC 2207/IC 2163.” The Astrophysical Journal 771, no. 2 (June 25, 2013): 133. © 2013 American Astronomical Society.
Version: Final published version
ISSN
0004-637X
1538-4357

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