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Today's Colloquium: A quest for cold gas at high-z (R. Srianand, IUCAA, Pune, India)

Submitter: colloquium
Description: Damped Lyman alpha systems seen in the spectra of high redshift QSOs allow one to study the distant galaxies in a luminosity unbiased way. Detection of molecular species (H_2, HD and CO), absorption lines of excited fine-structure levels of C^+ and C^0, broad dust absorption features and 21-cm absorption will enable one to probe the physical state of the gas in DLAs and understand the underlying physical processes.
In this talk, I will give a brief overview of different surveys we have been carrying out with VLT in the optical and GMRT/GBT in radio to detect the species listed above. I will summarise the recent results and discuss the future possibilities.
Copyright: R. Srianand
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