C.D.S. - SIMBAD4 rel 1.7 - 2020.07.13CEST00:36:04

2008A&A...479...83B - Astronomy and Astrophysics, volume 479, 83-96 (2008/2-3)

Estimating the total infrared luminosity of galaxies up to z∼2. from mid- and far-infrared observations.


Abstract (from CDS):

We present the observed correlations between rest-frame 8, 24, 70 and 160µm monochromatic luminosities and measured total infrared luminosities LIR of galaxies detected by Spitzer. Our sample consists of 372 star-forming galaxies with individual detections and flux measurements at 8, 24, 70 and 160µm. We have spectroscopic redshifts for 93% of these sources, and accurate photometric redshifts for the remainder. We also used a stacking analysis to measure the IR fluxes of fainter sources at higher redshifts. We show that the monochromatic mid and far-infrared luminosities are strongly correlated with the total infrared luminosity and our stacking analysis confirms that these correlations also hold at higher redshifts. We provide relations between monochromatic luminosities and total infrared luminosities LIR that should be reliable up to z∼2 (z∼1.1) for ULIRGs (LIRGs). In particular, we can predict LIR with accuracies of 37% and 54% from the 8 and 24µm fluxes, while the best tracer is the 70µm flux. Combining bands leads to slightly more accurate estimates. For example, combining the 8 and 24µm luminosities predicts LIR with an accuracy of 34%. Our results are generally compatible with previous studies, and the small changes are probably due to differences in the sample selection criteria. We can rule out strong evolution in dust properties with redshift up to z∼1. Finally, we show that infrared and sub-millimeter observations are complementary means of building complete samples of star-forming galaxies, with the former being more sensitive for z≲2 and the latter at higher z>2.

Abstract Copyright:

Journal keyword(s): infrared: galaxies - galaxies: starburst - galaxies: fundamental parameters - galaxies: evolution

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
1 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 1812 1
2 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1826 1

    Equat.    Gal    SGal    Ecl

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