Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2011-06-07
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
20 pages, 15 figures, accepted for publication in MNRAS
Scientific paper
We present a semi-analytical model for the formation and evolution of a high redshift quasar (QSO). We reconstruct a set of hierarchical merger histories of a 10^13 Msun dark matter halo and model the evolution of the corresponding galaxy and of its central super massive black hole. The code GAMETE/QSODUST consistently follows: the black hole assembly via both coalescence with other black holes and gas accretion; the build up and star formation history of the quasar host galaxy, driven by binary mergers and mass accretion; the evolution of gas, stars, metals in the interstellar medium (ISM), accounting for mass exchanges with the external medium (infall and outflow processes); dust formation in Supernova (SN) ejecta and in the stellar atmosphere of Asymptotic Giant Branch (AGB) stars, dust destruction by interstellar shocks and grain growth in molecular clouds; the AGN feedback which powers a galactic-scale wind, self-regulating the black hole growth and eventually halting star formation.We use this model to study the case of SDSS J1148+5251 observed at redshift 6.4, exploring different star formation histories for the QSO host galaxy.
Bianchi Simone
Salvadori Stefania
Schneider Raffaella
Valiante Rosa
No associations
LandOfFree
The origin of dust in high redshift QSOs: the case of SDSS J1148+5251 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The origin of dust in high redshift QSOs: the case of SDSS J1148+5251, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The origin of dust in high redshift QSOs: the case of SDSS J1148+5251 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-27456