The Role of the Environment and Structural Transformation in the Quenching of Satellite Galaxies

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• Joanna Woo (ETH Zurich)
• Friday 16 December 2016, 11:30-12:30
• Kavli LMR, IoA.

If you have a question about this talk, please contact Martin Haehnelt.

It is well established that environment plays a role in the quenching of star formation in galaxies. In addition, it is becoming increasingly clear that the stars in quenched galaxies in dense environments have prominent bulges, or equivalently, are centrally concentrated/compact. I will present new work that explores the relationship between these two effects, namely environment quenching and the build-up of galaxy inner densities. In particular, I will present strong evidence for a separate quenching path for satellites relative to the field. This study has raised new questions as to how or if environmental processes cause structural change. I will present new MUSE IFU observations of a group of galaxies showing evidence for an increase in central density caused by the group environment in some cases, and in others, evidence that the central densities were established long before quenching.

This talk is part of the Galaxies Discussion Group series.

This talk is included in these lists:

• Combined External Astrophysics Talks DAMTP
• Cosmology, Astrophysics and General Relativity
• Galaxies Discussion Group
• Institute of Astronomy Talk Lists
• Kavli Institute for Cosmology Talk Lists
• Kavli LMR, IoA

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