In this thesis I present the results obtained during my PhD studies at SISSA in the field of galaxy formation, with focus on the problem of formation of Early Type Galaxies (ETGs) at high redshift. The interest to this issue has been increasing with time, since in the last decade observational evidence brought the idea that the formation and evolution of quasars is strictly related to that of ETGs. In order to tackle the galaxy formation most of the efforts has been put in developing semi-analytical and numerical codes based on the assumption that the hierarchy of galaxy Dark Matter halos traces the history also of baryons (stars and gas) through continuous merging. On the other hand, the group in SISSA and in Padua Observatory put forward the concept that the galaxy and quasar phenomenology at high redshift is related chiefly to physical processes (such as cooling, collapse, star formation, accretion onto the central Black Hole seed and feedback) occurring in the gas associated to the phase of fast collapse/merging of the central 30-40% of the mass of DM halos, while the later phase of slow accretion is little affecting the evolution of stars and quasars.

Formation and evolution of massive early-type galaxies at high redshift / Fan, Lulu. - (2011 Oct 12).

Formation and evolution of massive early-type galaxies at high redshift

Fan, Lulu
2011-10-12

Abstract

In this thesis I present the results obtained during my PhD studies at SISSA in the field of galaxy formation, with focus on the problem of formation of Early Type Galaxies (ETGs) at high redshift. The interest to this issue has been increasing with time, since in the last decade observational evidence brought the idea that the formation and evolution of quasars is strictly related to that of ETGs. In order to tackle the galaxy formation most of the efforts has been put in developing semi-analytical and numerical codes based on the assumption that the hierarchy of galaxy Dark Matter halos traces the history also of baryons (stars and gas) through continuous merging. On the other hand, the group in SISSA and in Padua Observatory put forward the concept that the galaxy and quasar phenomenology at high redshift is related chiefly to physical processes (such as cooling, collapse, star formation, accretion onto the central Black Hole seed and feedback) occurring in the gas associated to the phase of fast collapse/merging of the central 30-40% of the mass of DM halos, while the later phase of slow accretion is little affecting the evolution of stars and quasars.
12-ott-2011
Danese, Luigi
Bressan, Alessandro
Lapi, Andrea
Fan, Lulu
File in questo prodotto:
File Dimensione Formato  
1963_5931_Fan_PhD.pdf

accesso aperto

Tipologia: Tesi
Licenza: Non specificato
Dimensione 2.25 MB
Formato Adobe PDF
2.25 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/4604
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact