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Modeling the interstellar medium of high redshift galaxies
  Nordita Astrophysics seminars

Wednesday 02 November 2016
from 13:30 to 14:30
Speaker : Livia Vallini (NORDITA)
Abstract : In the last few years, the advent of ALMA, made it possible the detection of far-infrared (FIR) metal and molecular cooling lines from z>6 galaxies. These lines, represent a powerful tool to shed light on the physical properties of the cold interstellar medium in the first galaxies. In this talk I will provide an overview regarding the semi-analytical models that I developed to describe the relative abundance of various gas phases in the ISM of the first galaxies. The models include a full treatment of the effects of stellar far-ultraviolet photons on the structure, chemistry, and thermal balance of the ISM. Once coupled to high-resolution cosmological simulations, they allowed to successfully interpret various ALMA detections from galaxies at z>6, putting constraints on their metallicity, and on the feedback of star formation on molecular gas.

Nordita  | Last modified 26 October 2016 15:19  |  HELP