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Are quiescent galaxies truly devoid of star formation? The mid-, far-infrared and radio properties of quiescent galaxies at z = 0.1 - 3

Published online by Cambridge University Press:  17 August 2016

Allison W. S. Man
Allison W. S. Man*
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany email: allison.man@eso.org
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Abstract

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Quiescent galaxy candidates are typically identified by their low unobscured star formation rates from deep field photometric surveys. However, their selection technique relies on the assumption of a universal dust attenuation curve. It is important to verify the selection through independent SFR indicators at longer wavelengths. Current mid-, far-infrared and radio surveys are limited to detecting only galaxies with very strong star formation or AGN activity. Here, I present the first comprehensive stacking results across mid-, far-infrared and radio wavelengths using Spitzer, Herschel and VLA data in the COSMOS field (Man et al. 2014). We find that the rest-frame NUV-r and r-J color criteria, combined with low 24 μm emission, provides a robust selection of truly quiescent galaxies out to z = 3. Additionally, we find evidence of radio emission in excess of the expected total star formation in quiescent galaxies at z ~ 0-1.5, indicative of a ubiquitous presence of low-luminosity radio AGN among them.

Keywords

galaxies: evolutiongalaxies: fundamental parameters (classification, colors, luminosities, masses, radii, etc.)galaxies: high-redshiftgalaxies: photometryinfrared: galaxiesradio continuum: galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S319: Galaxies at High Redshift and Their Evolution Over Cosmic Time , August 2015 , pp. 97 - 100
Copyright
Copyright © International Astronomical Union 2016 

References

Bell, E. F. 2003 ApJ, 586, 794 Google Scholar
Calzetti, D. et al. 2000 ApJ, 533, 682C Google Scholar
Fumagalli, M. et al. 2014, ApJ, 796, 35F Google Scholar
Ilbert, O. et al. 2013, A&A, 556, A55 Google Scholar
Kennicutt, R. C. Jr. 1998, ARAA, 36, 189 Google Scholar
Kurczynski, P. & Gawiser, E. 2010, AJ, 139, 1592 Google Scholar
Lee, N. et al. 2013, ApJ, 778, 131 Google Scholar
Le Floc'h, E. et al. 2009, ApJ, 703, 222 Google Scholar
Man, A. W. S. et al. 2014, ApJ submitted, arXiv: 1411.2870Google Scholar
Olsen, K. et al. 2013, ApJ, 764, 4 Google Scholar
Rujopakarn, W. et al. 2013, ApJ, 767, 73 CrossRefGoogle Scholar
Speagle, J. S. et al. 2014, ApJS, 214, 15 Google Scholar
Utomo, D. et al. 2014, ApJ, 783, L30 Google Scholar
Viero, M. P. et al. 2013, ApJ, 779, 32 Google Scholar
Williams, R. J. et al. 2009, ApJ, 691, 1879 Google Scholar
Wuyts, S. et al. 2011, ApJ, 742, 96W Google Scholar