A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is
NGC1313 X-2 was among the first ultraluminous X-ray sources discovered, and has been a frequent target of X-ray and optical observations. Using the HST/ACS multi-band observations, this source is identified with a unique counterpart within an error circle of 02. The counterpart is a blue star on the edge of a young cluster of <10^7 years amid a dominant old stellar population. Its spectral energy distribution is consistent with that for a Z=0.004 star with 8.5 M_ about 5×10^6 years old, or fordoi:10.1086/516624 fatcat:hzw5f3exprfkze7c6fj4nvkiou