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2007MNRAS.379..357R - Mon. Not. R. Astron. Soc., 379, 357-369 (2007/July-3)
Multiwavelength study of X-ray selected star-forming galaxies within the Chandra Deep Field-South.
ROSA-GONZALEZ D., BURGARELLA D., NANDRA K., KUNTH D., TERLEVICH E. and TERLEVICH R.
Abstract (from CDS):
Our main finding is that there is good agreement between the extinction corrected SFR(UV) and the SFR(X), and we confirm the use of X-ray luminosities as a trustful tracer of recent star formation activity. Nevertheless, at SFR(UV) larger than about 5M☉/yr there are several galaxies with an excess of SFR(X) suggesting the presence of an obscured active galactic nucleus (AGN) not detected in the optical spectra. We conclude that the IR luminosity is driven by recent star formation even in those galaxies where the SFR(X) is an order of magnitude higher than the SFR(UV) and therefore may harbour an AGN. One object shows SFR(X) much lower than expected based on the SFR(UV); this SFR(X) `deficit' may be due to an early transient phase before most of the massive X-ray binaries were formed. An X-ray deficit could be used to select extremely young bursts in an early phase just after the explosion of the first supernovae associated with massive stars and before the onset of massive X-ray binaries.
Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS
Journal keyword(s): galaxies: fundamental parameters - ultraviolet: galaxies - X-rays: galaxies
Simbad objects: 33
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