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Star formation and dust obscuration at z ≈ 2

Pannella, M. and Carilli, C. L. and Daddi, E. and McCracken, H. J. and Owen, F. N. and Renzini, A. and Schinnerer, E. and Smolčić, V. (2009) Star formation and dust obscuration at z ≈ 2. In: Probing Stellar Populations Out to the Distant Universe. AIP Conference Proceedings. No.1111. American Institute of Physics , Melville, NY, pp. 203-206. ISBN 978-0-7354-0648-3. http://resolver.caltech.edu/CaltechAUTHORS:20160505-154751576

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Abstract

We present preliminary results of a study aimed to constrain the star formation rate and dust content of galaxies as a function of mass at z≈ 2,, a crucial time for galaxy evolution: this is the cosmic epoch when most of the stars in the Universe are formed. We use a sample of star forming galaxies to perform a stacking analysis of their 1.4 GHz radio continuum as a function of different stellar population properties. Dust unbiased star formation rates are retrieved from radio fluxes. The main results of this work are: i) Galaxies in our sample show no downsizing pattern: specific star formation rates are constant over more than 1 dex in mass and up to the highest stellar mass probed; ii) a model independent UV dust attenuation law is provided which can be used to retrieve UV corrected SFR for extensive samples and hence a dust free cosmic star formation rate density.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.3141544DOIArticle
http://scitation.aip.org/content/aip/proceeding/aipcp/10.1063/1.3141544PublisherArticle
ORCID:
AuthorORCID
Carilli, C. L.0000-0001-6647-3861
Daddi, E.0000-0002-3331-9590
McCracken, H. J.0000-0002-9489-7765
Schinnerer, E.0000-0002-3933-7677
Smolčić, V.0000-0002-3893-8614
Additional Information:© 2009 American Institute of Physics. Published online 03 May 2009. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. The HST COSMOS Treasury program was supported through NASA grant HST-GO-09822. We gratefully acknowledge the contributions of the entire COSMOS collaboration consisting of more than 100 scientists (http://www.astro.caltech.edu/cosmos).
Group:COSMOS
Funders:
Funding AgencyGrant Number
NSFUNSPECIFIED
NASAHST-GO-09822
Subject Keywords:galaxies: formation and evolution - galaxies: star formation - galaxies: dust attenuation
Classification Code:PACS: 98.62.Ai, 98.62.Ck, 98.62.Lv, 98.62.Qz
Record Number:CaltechAUTHORS:20160505-154751576
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160505-154751576
Official Citation:Star formation and dust obscuration at z≈2 Pannella, M. and Carilli, C. L. and Daddi, E. and Mc Cracken, H. J. and Owen, F. and Renzini, A. and Schinnerer, E. and Smolčić, V., AIP Conference Proceedings, 1111, 203-206 (2009), DOI:http://dx.doi.org/10.1063/1.3141544
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:66699
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:09 May 2016 17:45
Last Modified:10 Jul 2019 18:14

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