Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21932205k&link_type=abstract
American Astronomical Society, AAS Meeting #219, #322.05
Astronomy and Astrophysics
Astrophysics
Scientific paper
We use spitzer IRAC to identify counterparts of sources selected with Herschel-SPIRE at 250, 350 or 500 micron in the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS). The IRAC catalogs are 50% complete to 22.5 and 22.2 AB magnitudes at 3.6 and 4.5 micron, respectively, and cover 0.4 deg2 of the H-ATLAS Science Demonstration Phase (SDP) field. Using a likelihood ratio analysis that accounts for the separation of SPIRE and IRAC centroids and the difference in the magnitude distribution of IRAC sources, we identify 144 reliable IRAC counterparts to 159 SPIRE-selected sources with overlapping IRAC coverage. We find that the SPIRE galaxies are redder than the field population at 3.6 and 4.5 micron and we use this property to identify 25 counterparts of 13 more SPIRE sources. The IRAC identification rate of 91% is significantly higher than has been demonstrated with wide-field ground-based optical and near-IR imaging of Herschel fields. While 33 of the identified counterparts have either photometric or spectroscopic redshifts, the galaxies undetected with ground-based optical data and without redshifts mostly have IRAC color [3.6]-[4.5]>0 and are likely to be at z >1.
Cooray Asantha
H-ATLAS Team
Kim Sam
Wardlow Julie
No associations
LandOfFree
Spitzer Irac Identification Of Herschel-atlas Spire Sources 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 Spitzer Irac Identification Of Herschel-atlas Spire Sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spitzer Irac Identification Of Herschel-atlas Spire Sources will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1580012