title: Radio Sources in the COSMOS Field: Star Forming Properties of High Luminosity Radio Sources
creator: Brady, Emer
subject: 520
subject: 520 Astronomy and allied sciences
description: Radio wavelengths offer a dust-unobscured window to the early universe. The aim of this thesis has been to characterize the star-forming properties of the high  redshift radio galaxy population. We present a preliminary catalogue of the first 610MHz map of the COSMOS feld and find that the sample properties are consistent with predictions for the low frequency radio population. Furthermore, we compare radio and IR star formation rate (SFR) tracers on a large sample of starburst galaxies and find that locally calibrated infrared (IR) and 1.4 GHz  radio continuum SFR tracers produce inconsistent results for the most active starbursts. These starbursts are rare locally, but become increasingly common in the  early universe. The high redshift starburst population may to be more diffuse, and hence cooler, than local counterparts. In addition, the infrared-radio correlation,  observed thus far to be linear and constant for a wide range of galaxies, may exhibit redshift or luminosity evolution. We conclude that a dedicated effort to  better model the IR and radio spectral energy distributions of starbursts will be essential to accurately characterize the SFR density at higher redhifts than those considered by studies to date.
date: 2016
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/22194/1/Thesis.pdf
identifier: DOI:10.11588/heidok.00022194
identifier: urn:nbn:de:bsz:16-heidok-221945
identifier:   Brady, Emer  (2016) Radio Sources in the COSMOS Field: Star Forming Properties of High Luminosity Radio Sources.  [Dissertation]     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/22194/
rights: info:eu-repo/semantics/openAccess
rights: http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html
language: eng