STRW local: Lunch Talks

Lunch Talks

The cluster vs. field stellar mass-size relation at z ~ 1: implications for galaxy size growth with decreasing redshift.

The cluster environment is known to be capable of altering the evolutionary paths of galaxies through a variety of mechanisms. High velocity dispersions are likely to suppress minor mergers between satellite galaxies. Galaxy clusters are therefore excellent laboratories for testing whether or not minor mergers drive the size growth of galaxies. By comparing the stellar mass-size relation of galaxies in both the field and cluster environments, it is possible to expose the dominant physical mechanisms driving galaxy growth in different environments. I will present results on the cluster mass-size relation from HST WFC3 and grism follow up to GCLASS the largest spectroscopic survey conducted on 10 clusters at z~1. Using this large sample of cluster galaxies with reliable size measurements and a field sample from the 3D-HST survey I will demonstrate how minor merger suppression, BCG growth, ICL growth and the production of recently quenched galaxies can work simultaneously to maintain a stellar mass-size relation that is independent of environment at low redshifts.

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Unless announced otherwise, the lunch talks start at 12:50 sharp. The approximate duration of the lunch talk is given above, and additional time will be given for questions and discussion following the presentation. Please make sure that you take ample time to pick up your lunch beforehand.

Information for Speakers and Hosts: Talks are limited to 25 minutes, with 5 additional minutes for questions. Hosts are responsible for bringing the speaker to the correct room in ample time to set up laptops etc., and for ensuring the speaker also has time for lunch.


For questions and/or suggestions concerning the lunch talks, please contact Themiya Nanayakkara () or Alvaro Hacar ()).