Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-09-29
Astronomy and Astrophysics
Astrophysics
9 pages, 6 figures, MNRAS accepted
Scientific paper
10.1111/j.1365-2966.2004.08293.x
We present a cross-correlation of the European Large Area ISO survey (ELAIS) with the ELAIS Deep X-ray Survey of the N1 and N2 fields. There are 7 Chandra point sources with matches in the ELAIS Final Analysis 15um catalogue, out of a total of 28 extragalactic ISO sources present in the Chandra fields. Five of these are consistent with AGN giving an AGN fraction of ~19 per cent in the 15um flux range 0.8-6 mJy. We have co-added the hard X-ray fluxes of the individually-undetected ISO sources and find a low significance detection consistent with star formation in the remaining population. We combine our point source cross-correlation fraction with the XMM-Newton observations of the Lockman Hole and Chandra observations of the Hubble Deep Field North to constrain source count models of the mid-infrared galaxy population. The low dust-enshrouded AGN fraction in ELAIS implied by the number of cross-identifications between the ELAIS mid-infrared sample and the Chandra point sources is encouraging for the use of mid-infrared surveys to constrain the cosmic star formation history, provided there are not further large undetected populations of Compton-thick AGN.
Almaini Omar
Bottinelli Sandrine
Franceschini Alberto
Gonzalez-Solares Eduardo
Johnson Oliver
No associations
LandOfFree
Mid-infrared sources in the ELAIS Deep X-ray Survey does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Mid-infrared sources in the ELAIS Deep X-ray Survey, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mid-infrared sources in the ELAIS Deep X-ray Survey will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-23307