The mid-infrared luminosity function of galaxies in the European Large Area Infrared Space Observatory Survey southern fields

Pozzi, F. and Gruppioni, C. and Oliver, S. and Matute, I. and La Franca, F. and Lari, C. and Zamorani, G. and Serjeant, S. and Franceschini, A. and Rowan-Robinson, M. (2004) The mid-infrared luminosity function of galaxies in the European Large Area Infrared Space Observatory Survey southern fields. Astrophysical Journal, 609 (1). pp. 122-132. ISSN 0004-637X. (The full text of this publication is not available from this repository)

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Abstract

We present the first determination of the 15 mum luminosity function of galaxies from the European Large Area ISO Survey (ELAIS) southern fields. We have adopted a new criterion to separate the quiescent, nonevolving and the starburst, evolving populations based on the ratio of mid-infrared to optical luminosity. Strong evolution is suggested by our data for the starburst galaxy population, while normal spiral galaxies are consistent with no evolution. The starburst population must evolve both in luminosity and in density with rates of the order L(z) proportional to (1 + z)(3.5) and rho(z) proportional to (1 + z)(3.8), respectively, up to z similar to 1. The evolutionary parameters of our model have been tested by comparing the model predictions with other observables, like source counts at all flux density levels (from 0.1 to 300 mJy) and redshift distributions and luminosity functions at high z (0.7 < z < 1.0 from Hubble Deep Field North [HDF-N] data). The agreement between our model predictions and the observed data is remarkably good. We use our data to estimate the star formation density of the universe up to z 0: 4, and we use the luminosity function model to predict the trend of the star formation history up to z = 1.

Item Type: Article
Additional information: 51 UNIV CHICAGO PRESS Part 1 832FO
Uncontrolled keywords: galaxies : evolution; galaxies : luminosity function, mass function; galaxies : spiral; galaxies : starburst; infrared : galaxies HUBBLE-DEEP-FIELD; STAR-FORMATION RATE; 15 MU-M; ISOCAM DATA REDUCTION; SOURCE COUNTS; HIGH-REDSHIFT; FORMATION HISTORY; IRAS GALAXIES; RADIO-SOURCES; EVOLUTION
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: Maggie Francis
Date Deposited: 28 May 2009 18:46
Last Modified: 14 Jan 2010 14:47
Resource URI: http://kar.kent.ac.uk/id/eprint/11799 (The current URI for this page, for reference purposes)
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