Date:
Tue, 09/12/201412:30-13:30
Location:
Kaplun building, Room No. 200
Lecturer: Mr. Sandro Tacchella
Affiliation: ETH Zurich
Abstract:
We have gained many new insights in the
formation of the first galaxies at very high
redshifts (z~8-10) and the major buildup of the
most massive ellipticals, bulges and disks at the
peak of cosmic star formation rate (z~2) in the
last century. I will show how we need to study
individual galaxies as well as the whole
population to understand how galaxies form
and evolve with time. I start with a simple
model that links the galaxy properties to the
underlying dark matter population and
successfully predicts the UV luminosity
function from z~10 to z=0. To constrain the
mass assembly and early evolution of z~2 star-
forming galaxies, I present a synergy between
Hubble Space Telescope and Very Large
Telescope data to resolve the stellar mass and
star formation distribution on 1-2 kpc scales.
We find that the massive z~2 galaxies already
have mature bulges and reduced star
formation activity in their center, sustaining
their high star-formation rates of about
hundred solar masses per year in their
outskirts.
Additional details of the upcoming Astrophysics'
seminars can be found on the following link.
האירוע הזה כולל שיחת וידאו ב-Google Hangouts.
הצטרף: https://hangouts.google.com/hangouts/_/mail.huji.ac.il/astrophysics?hceid=bWFpbC5odWppLmFjLmlsX2c0czhydDlpcmhwZzRvdGNybWIzZGFqcjdvQGdyb3VwLmNhbGVuZGFyLmdvb2dsZS5jb20.kgv12v3nhcqopv13lbucrh7sd4&hs=121