eprintid: 31013
rev_number: 13
eprint_status: archive
userid: 6397
dir: disk0/00/03/10/13
datestamp: 2022-02-10 07:44:07
lastmod: 2022-02-17 15:39:32
status_changed: 2022-02-10 07:44:07
type: doctoralThesis
metadata_visibility: show
creators_name: Engler, Christoph
title: Populations of satellite galaxies with the IllustrisTNG simulations: from galaxy clusters to the Local Group
subjects: ddc-520
divisions: i-130001
adv_faculty: af-13
abstract: In this thesis, I study populations of satellite galaxies in a $\Lambda$CDM context using the IllustrisTNG suite of cosmological magneto-hydrodynamical simulations. Utilising the entire range of IllustrisTNG allows for an unprecedented combination of statistical sample size and numerical resolution, resulting in mass ranges that cover multiple orders of magnitude for both host and satellites samples, as well as the first statistical sample of 198 high-resolution Milky Way-/Andromeda-like (MW/M31) hosts. I investigate the galaxy-halo connection for satellite and central galaxies across the mass spectrum in the stellar-to-halo mass relation as the most fundamental relationship of galaxy evolution in the cosmological standard model. I analyse the abundance of past and present-day satellite and subhalo populations around MW/M31-like hosts, find a remarkable degree of diversity, and put them into context with both observational surveys and previous simulations of similar systems. Their satellites become increasingly quenched towards smaller stellar masses as they lose their gas reservoirs more easily after infall. Thus, I not only give a detailed view on the evolution of satellite galaxies after infall and the environmental effects they experience but overcome one of the remaining challenges to the $\Lambda$CDM model: there is no missing satellites problem according to IllustrisTNG.
date: 2022
id_scheme: DOI
id_number: 10.11588/heidok.00031013
ppn_swb: 1789985579
own_urn: urn:nbn:de:bsz:16-heidok-310130
date_accepted: 2021-12-14
advisor: HASH(0x55fc36ba86f0)
language: eng
bibsort: ENGLERCHRIPOPULATION2022
full_text_status: public
place_of_pub: Heidelberg
citation:   Engler, Christoph  (2022) Populations of satellite galaxies with the IllustrisTNG simulations: from galaxy clusters to the Local Group.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/31013/1/engler_phdThesis.pdf