Astro Seminar Series - Hybrid Seminar

Tuesday, May 3, 2022 12:00 pm - 12:00 pm EDT

Ryley Hill - Resolving galaxy protoclusters from the cosmic infrared background

Bio: I just finished my Phd at University of British Columbia with Douglas Scott, and will be starting an NSERC Postdoctoral Fellowship in September (location TBD).

Resolving galaxy protoclusters from the cosmic infrared background

Galaxy clusters are the largest structures in the Universe, and as such are well studied below redshifts of 1. However, at earlier times they were still collapsing and accreting material, making them much more difficult to identify. Consequently, little is known about how galaxies were changed by these protocluster environments. I will talk about how we can find uniformly-selected samples of galaxy protoclusters beyond redshift 1 from large-area surveys of the cosmic infrared background, and how follow-up observations are beginning to resolve the properties of the galaxies residing in these structures. I will present a case study of one of the most massive protoclusters discovered at redshift 4, SPT2349-56, and discussed how optical-through-millimetre observations of this object have improved our understanding of galaxy and galaxy cluster evolution.

This will be a hybrid seminar. If you would like to join in person, please meet in the Physics building (Room 308). Would you like to join this seminar via Zoom?  Please email WCA.