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A Radio View of the Sky: the Cosmic History of Star-Forming and AGN Galaxies

Smolčić, V. and Zamorani, G. and Schinnerer, E. (2009) A Radio View of the Sky: the Cosmic History of Star-Forming and AGN Galaxies. In: The Starburst−AGN Connection. ASP Conference Series. No.408. Astronomical Society of the Pacific , pp. 116-121. ISBN 978-1-58381-696-7 .

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We explore the cosmic evolution of radio detected star forming (SF) galaxies and active galactic nuclei (AGN), drawn from the VLA-COSMOS survey, out to z = 1.3. We present the 20 cm radio luminosity function for these populations, and find that SF galaxies evolve much more rapidly than low-power radio AGN. Our results imply that weak radio AGN (L_(1.4GHz) ≤ 5×10^(25) WHz^(−1)) occur in the most massive galaxies already at z ~ 1. They may significantly contribute to the heating of their surrounding medium and thus inhibit gas accretion onto their host galaxies, as recently suggested for the ‘radio mode’ AGN feedback in cosmological models.

Item Type:Book Section
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URLURL TypeDescription
Smolčić, V.0000-0002-3893-8614
Schinnerer, E.0000-0002-3933-7677
Additional Information:© 2009 Astronomical Society of the Pacific.
Record Number:CaltechAUTHORS:20100914-112246750
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19944
Deposited By: Jason Perez
Deposited On:16 Sep 2010 23:09
Last Modified:10 Jul 2019 18:52

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