作者: Antara R. Basu-Zych , Antara R. Basu-Zych , Ann Hornschemeier , Tassos Fragos , Bret Lehmer
DOI: 10.3847/0004-637X/818/2/140
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摘要: We have studied high mass X-ray binary (HMXB) populations within two low-metallicity, starburst galaxies, Haro 11 and VV 114. These galaxies serve as analogs to high-redshift (z>2) Lyman break the larger sample of (LBAs) are sufficiently nearby ( 10^{39}$ erg/s; ultraluminous sources, ULXs) in these low-metallicity based on 8 detected ULXs. Comparing with star-forming galaxy luminosity function (XLF) presented by Mineo et al. (2012), 114 host ~4 times more L$_X>10^{40}$ erg/s sources than expected given their SFRs. simulate effects source blending from crowded lower HMXBs using XLF then vary shapes until we reproduce observed point distributions. find that LBAs a shallower bright end slope standard XLF. If conservatively assume brightest each is powered an AGN rather HMXB eliminate consideration, distribution becomes poorly constrained but does appear be consistent [Abridged]