eprintid: 14995
rev_number: 12
eprint_status: archive
userid: 602
dir: disk0/00/01/49/95
datestamp: 2013-06-03 08:20:54
lastmod: 2013-06-12 09:02:34
status_changed: 2013-06-03 08:20:54
type: doctoralThesis
metadata_visibility: show
creators_name: Jäger, Mathias
title: Evolution of galaxies studied by the COMBO-17+4 survey
subjects: ddc-520
divisions: i-851310
adv_faculty: af-13
keywords: Galaxienevolution
COMBO-17+4
Photometrische Rotverschiebung
abstract: In this thesis the evolution of galaxies at redshift z < 2 was analyzed, using the COMBO-17+4 (Classifying Objects by Medium-Band Observations) survey. This survey used optical as well as near-infrared data from three different fields of view with a total area of 0.625 square degree. On the basis of an H band selected catalog the photometric
redshifts, rest-frame colors and masses of 42,134 galaxies to a limiting magnitude of H = 21.7 mag were calculated. Using the color bimodality in (U280 −V) the galaxies were divided in a red (passive) and a blue (active) population, which were analyzed separately. The results verify the existence of a bimodality up to a redshift of z = 1.6. Further the evolution of the luminosity function for both galaxy populations was analyzed in ten redshift bins. In both populations a significant decrease in the characteristic magnitude M∗B from z = 2 to z = 0.2 was measured. Moreover the number density of red galaxies showed a slight increase during this time, whereas
the number density of blue galaxies was decreasing. An analysis of the mass function showed a constant value of the characteristic mass for both populations and an
increase of the mass density for red galaxies from z = 2 to z = 0.2.
date: 2013
id_scheme: DOI
id_number: 10.11588/heidok.00014995
ppn_swb: 1652447504
own_urn: urn:nbn:de:bsz:16-heidok-149959
date_accepted: 2013-05-02
advisor: HASH(0x55fc36d01260)
language: eng
bibsort: JAGERMATHIEVOLUTIONO2013
full_text_status: public
citation:   Jäger, Mathias  (2013) Evolution of galaxies studied by the COMBO-17+4 survey.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/14995/1/Dissertation%20Mathias%20J%C3%A4ger%20-%20Evolution%20of%20Galaxies%20studied%20by%20the%20COMBO-17%2B4%20survey.pdf