SIMBAD references

2010ApJ...723...40K - Astrophys. J., 723, 40-46 (2010/November-1)

The resolved near-infrared extragalactic background.

KEENAN R.C., BARGER A.J., COWIE L.L. and WANG W.-H.

Abstract (from CDS):

We present a current best estimate of the integrated near-infrared (NIR) extragalactic background light (EBL) attributable to resolved galaxies (Integrated Galaxy Light, IGL) in J, H, and Ks. Our results for measurements of νIν in units of nW/m2/sr are 11.7+5.6–2.6 in J, 11.5+4.5–1.5 in H, and 10.0+2.8–0.8 in Ks. We derive these new limits by combining our deep wide-field NIR photometry from five widely separated fields with other studies from the literature to create a galaxy counts sample that is highly complete and has good counting statistics out to JHKs∼ 27-28. As part of this effort we present new ultra-deep Ks-band galaxy counts from 22 hr of observations with the Multi Object Infrared Camera and Spectrograph (MOIRCS) instrument on the Subaru Telescope. We use this MOIRCS Ks-band mosaic to estimate the total missing flux from sources beyond our detection limits. Our new limits to the NIR EBL are in basic agreement with, but 10%-20% higher than, previous estimates, bringing them into better agreement with estimates of the total NIR EBL (resolved + unresolved sources) obtained from TeV γ-ray opacity measurements and recent direct measurements of the total NIR EBL as well as the modeled NIR IGL. We examine field-to-field variations in our photometry to show that the integrated light from galaxies is isotropic to within uncertainties, consistent with the expected large-scale isotropy of the EBL. Our data also allow for a robust estimate of the NIR light from Galactic stars, which we find to be 14.7±2.4 in J, 10.1±1.9 in H, and 7.6±1.8 in Ks in units of nW/m2/sr.

Abstract Copyright:

Journal keyword(s): cosmic background radiation - cosmology: observations - galaxies: fundamental parameters - infrared: diffuse background

Simbad objects: 6

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