Date | Event Type | Speaker | |
04/02/2024 | Astro Seminar | Thales Gutcke [ -- ] | |
Title: Globular cluster formation and accretion in ultra-faint dwarf galaxies Abstract: I present a formation scenario for ancient globular cluster-like objects that form in ultra-high resolution cosmological simulations (smallest cell size < 0.1pc, mass resolution Mcell = 4 Msun). The simulations model the formation of dwarf galaxies before Reionzation and follow their evolution to the present day, during which they form 10^6−7 Msun in stellar mass. The employed LYRA simulation model is taylored to include the necessary physics at this resolution scale. It features a multi-phase interstellar medium, individual stars and individual resolved supernova explosions. The clusters display dense stellar profiles, no or little dark matter and ancient stellar populations. The star formation histories of each cluster are short and bursty, but some display multiple stellar populations. The metallicity distributions become sufficiently wide to include stars in the range 10^−4 < Z/Zsun < 1. This is possible due to the fact that these systems are dark matter mini-halos at high redshift, before the onset of Reionization. The dark matter is preferentially stripped as the clusters are accreted onto small dwarf galaxies, with a mean accretion redshift of z~5. (2:00 PM - 3:15 PM, 726 Broadway, 940, CCPP Seminar) | |||
04/02/2024 | Grad Pheno Journal Club | [ + ] | |
04/03/2024 | ArXiv Discussion | HEP/Pheno Journal Club [ + ] | |
04/03/2024 | HEP Seminar | Taewook Youn [ + ] | |
04/04/2024 | Physics Dept Colloquium | Itai Cohen [ + ] | |
04/05/2024 | HEP Discussion Sessions | Zare [ + ] | |
04/09/2024 | Astro Seminar | Matthew McQuinn [ + ] | |
04/10/2024 | Special Seminar | Or Graur [ + ] | |
04/10/2024 | HEP Seminar | Clifford Cheung [ + ] | |
04/11/2024 | Physics Dept Colloquium | Karen Kasza [ + ] | |
04/12/2024 | HEP Discussion Sessions | Zare [ + ] | |
04/16/2024 | Grad Pheno Journal Club | [ + ] | |
04/17/2024 | ArXiv Discussion | HEP/Pheno Journal Club [ + ] | |
04/17/2024 | HEP Seminar | Deog Ki Hong [ + ] | |
04/17/2024 | Cosmic Happy Hour | Tony Zhou [ + ] | |
04/18/2024 | Informal HEP Talk | Thomas Faulkner [ + ] | |
04/18/2024 | Physics Dept Colloquium | John Eiler [ + ] | |
04/19/2024 | Informal HEP Talk | Edward Mazenc [ + ] | |
04/19/2024 | Special Seminar | John Eiler [ + ] | |
04/19/2024 | HEP Discussion Sessions | Zare [ + ] | |
04/22/2024 | CCPP Brown Bag | David Hogg [ + ] | |
04/23/2024 | Astro Seminar | Nikhil Padmanabhan [ + ] | |
04/23/2024 | Grad Pheno Journal Club | [ + ] | |
04/24/2024 | HEP Seminar | T Daniel Brennan [ + ] | |
04/25/2024 | Oral Defense | Nicholas Faucher [ + ] | |
04/25/2024 | Physics Dept Colloquium | David Awschalom [ + ] | |
04/29/2024 | CCPP Brown Bag | Giovanni Verza [ + ] | |
04/30/2024 | Astro Seminar | Anna Suliga [ + ] | |
04/30/2024 | Grad Pheno Journal Club | [ + ] |