Institute of Astronomy

The Kinematic Assembly of Disk Galaxies

SpeakerTalk DateTalk Series
Susan Kassin (STSCI)26 June 2015Institute of Astronomy Galaxies Discussion Group

Abstract

One of the most important open issues in astronomy is the assembly of galactic disks. I approach this subject from an observational perspective, tracing the kinematic evolution of star-forming galaxies
since a redshift of 1, or over the last 8 billion years of the Universe. I will discuss recent results that show the progressive (and mass-dependent) assembly of disk galaxies over this time period. I will also introduce a mass threshold, below which disk formation is
not guaranteed in today's universe. These results strongly challenge the traditional analytic model of galaxy formation and provide an important benchmark for simulations.

Presentation

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