Understanding the star formation modes in the distant universe
type: Dataset
description: The goal of my PhD study consists at attempt to understand what are the main processes at the origin of the star formation in the galaxies over the last 10 billions years. While it was proposed in the past that merging of galaxies has a dominant role to explain the triggering of the star formation in the distant galaxies having high star formation rates, in the opposite, more recent studies revealed scaling laws linking the star formation rate in the galaxies to their stellar mass or their gas mass. The small dispersion of these laws seems to be in contradiction with the idea of powerful stochastic events due to interactions, but rather in agreement with the new vision of galaxy history where the latter are continuously fed by intergalactic gas. We were especially interested in one of this scaling law, the relation between the star formation (SFR) and the stellar mass (M*) of galaxies, commonly called the main sequence of star forming galaxies. We studied this main sequence, SFR-M*, in function of the morphology and other physical parameters like the radius, the colour, the clumpiness. The goal was to understand the origin of the sequence’s dispersion related to the physical processes underlying this sequence in order to identify the main mode of star formation controlling this sequence. This work needed a multi-wavelength approach as well as the use of galaxies profile simulation to distinguish between the different galaxy morphological types implied in the main sequence.
landing page: https://theses.hal.science/tel-00790749
identifier: NNT: 2012PA112173
keyword: evolution--galaxies--formation
keyword: fundamental-parameters--galaxies
keyword: galaxies
keyword: galaxies-evolution--galaxies-formation
keyword: galaxies-structure
keyword: haut-redshift
keyword: high-redshift
keyword: infoeu-reposemanticsdoctoralthesis
keyword: parametres-fondamentales--galaxies
keyword: physcondcm-genphysics-physicscondensed-matter-cond-matother-cond-matother
keyword: structure--galaxies
keyword: theses
issued: 2026-05-14T08:43:50.480799
modified: 2026-05-14T08:43:50.480805
language: fr
contact point: Organization
  fn: CCSD

test_moissonnage_selune
type: Agent

Understanding the star formation modes in the distant universe
type: Distribution
format: HTML
access URL: https://theses.hal.science/tel-00790749
issued: 2026-05-14T08:43:50.512923
modified: 2026-05-14T08:43:50.449963