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Keck observations of ROSAT ultra-luminous X-ray source candidates

โœ Scribed by Diane Sonya Wong; Ryan Chornock; Alexei V. Filippenko


Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
433 KB
Volume
38
Category
Article
ISSN
0273-1177

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The metallicity of the nebula surroundin
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## Abstract Recent models of the formation of ultraโ€luminous Xโ€ray sources (ULXs) predict that they preferentially form in lowโ€metallicity environments. We look at the metallicity of the nebula surrounding NGC 1313 Xโ€2, one of the bestโ€studied ULXs. Simple estimates, based on the extrapolation of t