title: The faint radio population in the VLA-COSMOS Survey: Star forming galaxies and active galactic nuclei
creator: Smolcic, Vernesa
subject: 520
subject: 520 Astronomy and allied sciences
description: The composition of the faint -- submillijansky -- radio   population, that has been a matter of strong debate in the past, is explored   by performing observations at 1.4~GHz (20~cm) radio continuum of the   2\sqdeg\ COSMOS field providing a large statistically significant sample,   and by developing a method that uses a minimal number of parameters to   efficiently discriminate between the two main populations in extragalactic   radio surveys: active galactic nuclei (AGN) and star forming galaxies. This   method bears the potential to be successfully applied to similar samples   selected at other wavelengths. One of the main findings is that star forming   galaxies do not dominate the submillijansky radio population, as often   assumed, but form only about $30-40\%$ of it, while the remainder is   composed of AGN and quasars. Using this well defined sample of   radio-selected star forming galaxies at 1.4~GHz, the cosmic star formation   history is derived using radio data, for the first time constraining the   dust-unbiased cosmic evolution of star formation rate in the most   intensively star forming galaxies ($\gtrsim100$~\Msolyr) since $\sim5$~Gyr   after the Big Bang with high precision. In addition, the radio derived   cosmic star formation history confirms the validity of the large dust   corrections applied at other wavelengths.
date: 2007
type: Dissertation
type: info:eu-repo/semantics/doctoralThesis
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/7954/1/smolcic.pdf
identifier: DOI:10.11588/heidok.00007954
identifier: urn:nbn:de:bsz:16-opus-79548
identifier:   Smolcic, Vernesa  (2007) The faint radio population in the VLA-COSMOS Survey: Star forming galaxies and active galactic nuclei.  [Dissertation]     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/7954/
rights: info:eu-repo/semantics/openAccess
rights: http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html
language: eng