Evolucija patuljastih galaksija u jatima galaksija male mase
Evolution of dwarf galaxies in the lower mass clusters of galaxies
Author
Martinović, Nemanja S.Mentor
Mićić, Miroslav
Committee members
Ilić, Dragana
Vukotić, Branislav

Metadata
Show full item recordAbstract
U okviru ove disertacije ce biti predstavljeni rezultati analize formiranja,
rasprostranjenosti i evolucije patuljastih galaksija iz kosmoloških simulacija. Bice
predstavljena prva kosmološka simulacija koja je u potpunosti izvedena i analizirana
u Srbiji. Iz dobijenih rezultata je pokazano kako se formirala struktura na
velikim skalama, pre svega kako se formiraju jata galaksija. Kako su jata galaksija
dominantne strukture u svemiru, koje se relativno sporo formiraju u odnosu
na postojanje svemira, korišcenjem Ilustris simulacije, u kojoj je ukljucena kompletna
fizika, bice pokazano da znacajan deo jata galaksija nije u stanju dinamicke
ravnoteže, kako neki autori tvrde, odnosno da su u procesu formiranja i danas.
Dobijeni rezultati ce biti iskorišceni da se jata galaksija podele na tri tipa: jata
u interakciji, jata koja interaguju sa manjim grupama (slabo interagujuca jata) i
jata galaksija koja nisu u interakciji. Kako patuljaste galaksije po svom broju cine
najveci broj galaksija ...u svemiru, a pogotovu u jatima, ovo postavlja pitanje kako
trenutni procesi u kojima se jato nalazi uticu na strukturu i rasprostranjenost razlicitog
tipa patuljastih galaksija. Nakon kratkog pregleda danas poznatih tipova
patuljastih galaksija, pokazacemo da postoji osetljivost rasprostranjenosti patuljastih
nepravilnih galaksija u odnosu na to da li je maticno jato galaksija u interakciji
ili ne. Kako se pretpostavlja da su patuljaste nepravilne galaksije prethodnici za
formiranje najbrojnijih tipova patuljastih galaksija, ovo bi moglo da ukaže na dominantan
kanal dopremanja tih galaksija u jata galaksija gde se ocekuje da dožive
morfološku transformaciju. Na kraju ce biti predstavljeno otkrice dva kanala formiranja
za kompaktne elipticne galaksije u jatima galaksija...
Within this dissertation results from the analysis of formation, abundance
and evolution of the dwarf galaxies from cosmological simulations will be
presented. We will present results from first cosmological simulation which was
performed and analyzed in its entirety in Serbia. From the obtained results it was
shown how the large scale structure formed, primarily the formation of clusters
of galaxies. Since the clusters of galaxies are dominant structures in the universe,
which are relatively slowly forming in relation to the existence of the universe,
using the Illustris cosmological simulation, with included hydrodynamics, it will
be shown that a significant part of the clusters of galaxies are not in the state
of dynamic equilibrium, as some authors claim, therefore their formation process
continues. The obtained results will be used to divide the clusters of galaxies into
three types: interacting clusters, clusters interacting with smaller groups (weakly
interacting clusters), and ...clusters of galaxies that are not interacting. As the dwarf
galaxies constitute largest number of galaxies in the universe, notably largest number
in the clusters of galaxies, this raises the question how cluster’s interactions
affect the structure and abundance of a diverse type of dwarf galaxies within them.
After a brief review of today’s known types of dwarf galaxies, we will show that
there is susceptibility of the abundance of dwarf irregular galaxies in relation to
whether the parent cluster of galaxies is in interaction or not. As it is assumed
that the dwarf irregular galaxies are predecessors for the formation of the most
numerous types of dwarf galaxies, this could point to the dominant channel of delivering
these galaxies to clusters of galaxies where they are expected to undergo
morphological transformation. In the end, the discovery of two formation channels
for compact elliptical galaxies in the clusters of galaxies will be presented...