| Issue |
A&A
Volume 406, Number 2, August I 2003
|
|
|---|---|---|
| Page(s) | L27 - L31 | |
| Section | Letters | |
| DOI | https://doi.org/10.1051/0004-6361:20030785 | |
| Published online | 17 November 2003 | |
Letter to the Editor
Yet another galaxy identification for an ultraluminous X-ray source*
1
Istituto di Astrofisica Spaziale e Fisica Cosmica – Sezione di Bologna, CNR, via Gobetti 101, 40129, Bologna, Italy
2
INTEGRAL Science Data Centre, Chemin d'Ecogia 16, 1290 Versoix, Switzerland
3
The Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 91101, USA
Corresponding author: N. Masetti, masetti@bo.iasf.cnr.it
Received:
23
April
2003
Accepted:
22
May
2003
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 
,
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.
Key words: galaxies: distances and redshifts / galaxies: photometry / galaxies: starburst
© ESO, 2003
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