Intensity, Isotropy and Origin of the Cosmic Infrared Background

Details Intensity, Isotropy and Origin of the Cosmic Infrared Background Intensity, Isotropy and Origin of the Cosmic Infrared Background

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21115205l&link_type=abstract

American Astronomical Society, AAS Meeting #211, #152.05; Bulletin of the American Astronomical Society, Vol. 39, p.1004

Astronomy and Astrophysics

Astronomy

Scientific paper

We have extended the Wright (2001) "DIRBE Minus 2MASS" analysis to 40 new regions of the sky and obtain a consistent residual intensity of 14.69 +/- 4.49 kJy/sr and 15.62 +/- 3.34 kJy/sr at 2.2 and 3.5 microns respectively. The residual intensities at 1.25 microns are more scattered leading to a weak limit on the J band CIRB of 8.88 +/- 6.26 kJy/sr. We are also able to compare the 3.5 micron "DIRBE Minus 2MASS" CIRB with the 3.6 micron CIRB determined via galaxy counts done with profile-fit photometry in Spitzer images. We have run a Markov Chain Monte Carlo simulation of our analysis in order to quantify the uncertainties in determining the CIRB in this way and obtain a galaxy count model that suggests that galaxies contribute a larger fraction of the CIRB than previous lower limits suggest.

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