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VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
X-WR-CALNAME:Physics Colloquium - Dr. Jonathan Cohn\, Texas A&M University
X-WR-TIMEZONE:Central Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20260713T213546Z
UID:tag:localist.com\,2008:EventInstance_41217935350708
DTSTART:20221019T210000Z
DTEND:20221019T220000Z
DESCRIPTION:Dynamical mass measurements of supermassive black holes in loca
 l relic galaxies\n\nSupermassive black holes (BHs) have been observed to c
 orrelate with host galaxy bulge properties\, leading to a fundamental open
  question in galaxy evolution: do BHs and galaxies grow in lockstep\, or d
 oes the growth of one precede that of the other? We have uncovered a sampl
 e of local compact galaxies that are thought to be local analogs/relics of
  z~2 quiescent galaxies. Previous stellar-dynamical modeling of three gala
 xies in this sample found BHs that were over-massive compared to the BH ma
 ss - bulge luminosity scaling relation\, indicating BHs may build the majo
 rity of their mass before their host galaxies. Here\, we present Atacama L
 arge Millimeter/submillimeter Array (ALMA) CO(2-1) observations of the rot
 ating circumnuclear disks in three more relic galaxies. We fit gas-dynamic
 al models to the ALMA data\, assuming the CO emission originates from a dy
 namically cold\, thin disk\, and determine Bayesian posteriors of paramete
 rs including BH mass. Finally\, we place the relic galaxies on the BH mass
  - host galaxy scaling relations. Making more dynamical BH mass measuremen
 ts for the sample of relic galaxies will significantly advance our underst
 anding of BH - host galaxy co-evolution.\n\nSpeaker Bio: Jonathan Cohn (he
 /she/they) is an astronomy postdoc at Texas A&M University. He studies sup
 ermassive black holes and the relationships between black hole masses and 
 host galaxy properties. In addition to science\, she is passionate about t
 ransforming academia and society at large into a more equitable place. In 
 their free time\, Jonathan enjoys reading\, creative writing\, listening t
 o music\, playing tabletop games and RPGs\, climbing\, and hiking.
GEO:32.989016;-96.750277
LOCATION:Sciences Building (SCI)\, 1.210
SUMMARY:Physics Colloquium - Dr. Jonathan Cohn\, Texas A&M University
URL;VALUE=URI:https://calendar.utdallas.edu/event/physics_colloquium_-_dr_j
 onathan_cohn_texas_am_university
CATEGORIES:Lectures & Workshops
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