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Spitzer view on the downsizing scenario of galaxy formation and the role of AGN

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Pérez González, Pablo Guillermo and Alonso Herrero, Almudena and Donley, Jennifer and Rieke, George and Barro, Guillermo and Gallego Maestro, Jesús and Zamorano Calvo, Jaime (2010) Spitzer view on the downsizing scenario of galaxy formation and the role of AGN. In Highlights of Spanish astrophysics V. Astrophysics and Space Science Proceedings . Springer-Verlag Berlin, p. 337. ISBN 978-3-642-11249-2

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Official URL: http://dx.doi.org/10.1007/978-3-642-11250-8_68


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Abstract

We present the latest results of the Spitzer Cosmological Surveys concerning the characterization of the evolution of galaxies in the last 12 Gyr (from z=4). We have analyzed the stellar mass function up to z=4 using a sample of more the 28,000 galaxies selected in the rest-frame near-infrared with Spitzer/IRAC. Our results confirm and quantify the “downsizing” scenario of galaxy formation. Based on the study of the specific SFRs of X-ray emitters, we discuss the role of AGN in the evolution of galaxies, arguing against the link between nuclear activity and the quenching of the star formation in massive galaxies at z<1.4.


Item Type:Book Section
Additional Information:

© Springer-Verlag Berlin Heidelberg 2010. Scientific Meeting of the Spanish-Astronomical-Society (SEA) (8th. 2008. Santander/Spain).

Uncontrolled Keywords:Astronomy; Astrophysics
Subjects:Sciences > Physics > Astrophysics
Sciences > Physics > Astronomy
ID Code:61536
Deposited On:21 Jul 2020 09:36
Last Modified:21 Jul 2020 09:36

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