XXIVth IAP Colloquium

Far away : light in the young universe at redshift beyond three

Monday July 7 to Friday July 11, 2008

List of TELLES's Presentation(s) ( Updated 20/01/2011 15:16:16 )

Precise if your presentation is oral or a poster : Poster
Title of your presentation : The L-sigma relation for HII galaxies - a benchmark for high redshift galactic masses and distances

HII galaxies are dwarf starbursts at low redshift with high star formation rates and low metallicities. These are physical properties expected of the young galaxy population in the early universe. In particular, HII galaxies present a scaling relation between L-sigma analogous to the Faber-Jackson relation for ellipticals and the Tully-Fisher relation for spirals. In this talk or poster, I will discuss the origin of the supersonic motions from feedback to gravity producing the observed sigma, the effects of galactic evolution on the scaling relation, and finally the validity of the application of this powerful relation to the high redshift universe.

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