Events List

DateEvent TypeSpeaker
04/02/2024Astro SeminarThales 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)
04/02/2024Grad Pheno Journal Club [ + ]
04/03/2024ArXiv DiscussionHEP/Pheno Journal Club [ + ]
04/03/2024HEP SeminarTaewook Youn [ + ]
04/04/2024Physics Dept ColloquiumItai Cohen [ + ]
04/05/2024HEP Discussion SessionsZare [ + ]
04/09/2024Astro SeminarMatthew McQuinn [ + ]
04/10/2024Special SeminarOr Graur [ + ]
04/10/2024HEP SeminarClifford Cheung [ + ]
04/11/2024Physics Dept ColloquiumKaren Kasza [ + ]
04/12/2024HEP Discussion SessionsZare [ + ]
04/16/2024Grad Pheno Journal Club [ + ]
04/17/2024ArXiv DiscussionHEP/Pheno Journal Club [ + ]
04/17/2024HEP SeminarDeog Ki Hong [ + ]
04/17/2024Cosmic Happy HourTony Zhou [ + ]
04/18/2024Informal HEP TalkThomas Faulkner [ + ]
04/18/2024Physics Dept ColloquiumJohn Eiler [ + ]
04/19/2024Informal HEP TalkEdward Mazenc [ + ]
04/19/2024Special SeminarJohn Eiler [ + ]
04/19/2024HEP Discussion SessionsZare [ + ]
04/22/2024CCPP Brown BagDavid Hogg [ + ]
04/23/2024Astro SeminarNikhil Padmanabhan [ + ]
04/23/2024Grad Pheno Journal Club [ + ]
04/24/2024HEP SeminarT Daniel Brennan [ + ]
04/25/2024Oral DefenseNicholas Faucher [ + ]
04/25/2024Physics Dept ColloquiumDavid Awschalom [ + ]
04/26/2024HEP Discussion SessionsZare [ + ]
04/29/2024CCPP Brown BagGiovanni Verza [ + ]
04/30/2024Astro SeminarAnna Suliga [ + ]
04/30/2024Grad Pheno Journal Club [ + ]