The metallicity of the nebula surroundin
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E. Ripamonti; M. Mapelli; L. Zampieri; M. Colpi
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Article
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2011
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John Wiley and Sons
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English
โ 118 KB
๐ 2 views
## Abstract Recent models of the formation of ultraโluminous Xโray sources (ULXs) predict that they preferentially form in lowโmetallicity environments. We look at the metallicity of the nebula surrounding NGC 1313 Xโ2, one of the bestโstudied ULXs. Simple estimates, based on the extrapolation of t