Gas flows as fuel for star formation in distant galaxies: a spotlight on strong absorption line systems

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• Michele Fumagalli (Centre for Extragalactic Astronomy, University of Durham)
• Tuesday 24 May 2016, 14:00-15:00
• Martin Ryle Seminar Room, Kavli Institute.

If you have a question about this talk, please contact Greg Willatt.

Absorption line spectroscopy has been an invaluable tool to map the distribution and chemical composition of gas near galaxies in the high-redshift universe. During the past 50 years, however, optically-thick clouds that give rise to Lyman limit systems (LLSs) have received much less attention than the well-studied damped Lyman-alpha absorbers (DLAs). Thus, the physical properties of these absorbers and their connection to galaxies still remain for most part elusive. The growing interest in studies of the circumgalactic medium is, however, putting the spotlight on the link between LLSs and galaxies. In this talk, I will present results from ongoing work to constrain the physical properties of LLSs in connection to halo gas, and I will discuss ways to exploit these absorbers, together with DLAs, as tools for the study of gas flows near high-redshift galaxies.

This talk is part of the Cavendish Astrophysics Seminars series.

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