Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-05-23
Astron.Astrophys. 406 (2003) L27-L32
Astronomy and Astrophysics
Astrophysics
5 pages, 3 figures, 1 table, accepted for publication on A&A Letters
Scientific paper
10.1051/0004-6361:20030785
We report on the identification of the optical and infrared counterparts of the ultraluminous X-ray source (ULX) XMMU J121214.5+131248 (NGC4168-ULX1). The optical spectrum yields a redshift of z=0.217, which implies that the ULX is not associated with the nearby galaxy NGC 4168, but rather with a background object. Optical spectral line ratios and the spectral energy distribution constructed from the available data indicate that the source is likely a starburst nucleus.
Cocco G. Di
Dadina Mauro
Foschini Luca
Ho Luis C.
Malaguti Giuseppe
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