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Dr Jayaram N Chengalur (ATNF Visiting Scientist / National Centre for Radio Astrophysics, TIFR (Pune))

HI in extremely faint dwarf galaxies - Dr Jayaram N Chengalur Colloquium

The Australia Telescope National Facility Colloquium
15:30-16:30 Wed 15 Feb 2006

ATNF Marsfield Lecture Theatre


I will talk about GMRT observations of HI in extremely faint dwarf
galaxies. In hierarchical models of galaxy formation, the smallest galaxies form first and then merge to form larger galaxies. Nearby extreme dwarf galaxies are presumably those which have escaped this merger process. Detailed studies of these galaxies may hence provide insight into high redshift galaxy formation and evolution processes. Our GMRT observations cast light on a number of issues, including dark matter in the smallest gas rich galaxies, the impact of star formation on the gas and baryon content of these galaxies and the fine scale structure of their neutral ISM.

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