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Evolution de l'agrégation des galaxies dans le sondage VIMOS-VLT Deep Survey

Abstract : The recent surveys of the Universe highlighted the presence of structures in the matter distribution, such as filaments and voids. To study the evolution of the galaxy spatial distribution, it is necessary to know their accurate position in a three dimensional space. This thesis took place within the framework of the VIMOS-VLT Deep Survey (VVDS). Its goal is to measure some 100000 redshifts to study the formation and evolution of the galaxies and large scale structures of the Universe up to z~5. After having made a review of our knowledge of the galaxies distribution, then introduced the VVDS, I present the measurement and the evolution of the real-space two-point correlation function from the first epoch data of the VVDS, the largest sample of 10759 spectra ever acquired up to I_AB=24. I developed a whole set of programs made available to the VVDS consortium to easily measure the clustering length of galaxies in a given redshift range, with its associated errors, correcting the effects of the VVDS observing strategy. This tool enabled to measure the evolution of the real space correlation function of the global galaxies population up to z=2. I then extended this study dividing the full galaxies sample by spectral type and color. Finaly, combining the GALEX data to the VVDS has allowed me to measure the clustering of an ultraviolet-selected sample of galaxies up to z~1. This is the first time that such measurements are carried out on such a so long range of cosmic time. The results presented in this thesis are thus establishing a new reference in the field.
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https://tel.archives-ouvertes.fr/tel-00011320
Contributor : Baptiste Meneux <>
Submitted on : Sunday, January 8, 2006 - 12:55:22 PM
Last modification on : Thursday, July 25, 2019 - 4:34:12 PM
Long-term archiving on: : Friday, September 14, 2012 - 5:00:41 PM

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Baptiste Meneux. Evolution de l'agrégation des galaxies dans le sondage VIMOS-VLT Deep Survey. Astrophysique [astro-ph]. Université de Provence - Aix-Marseille I, 2005. Français. ⟨tel-00011320⟩

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