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DTSTART:20221106T020000
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UID:calendar.462236.field_event_date.0@www.wright.edu
DTSTAMP:20260219T180518Z
CREATED:20221015T140031Z
DESCRIPTION:Physics SeminarDr.Marc Seigar The University of ToledoTitle: No
 n-barred Ringed Galaxies: The Curious Case of LEDA 1000714 Abstract: In th
 is talk\, I will introduce the concept of non-barred ringed galaxies in th
 e context of galaxy morphology and structure. Cosmological simulations of 
 structure formation cannot currently produce non-barred ringed galaxies an
 d the prevailing theory is that rings form due to the presence of a non-ax
 isymmetric perturbation\, typically a bar. To find non-barred ringed galax
 ies\, therefore raises some questions about our ideas of how galaxies form
 \, especially in these rare cases. I will introduce three types of non-bar
 red ringed galaxies\, polar-ring galaxies\, collisional-ring galaxies\, an
 d Hoag-type galaxies. I will give an overview of Hoag’s object\, the arche
 typical non-barred ringed galaxies. The talk will be mainly focused on the
  Hoag-type galaxy\, LEDA 1000714\, and how we uncovered the existence of a
  diffuse red ring in this object.October 21\, 2022 2:00 PM 112 Oelman Hall
 /WebEx https://wright.webex.com/meet/ivan.medvedev
DTSTART;TZID=America/New_York:20221021T140000
DTEND;TZID=America/New_York:20221021T150000
LAST-MODIFIED:20221018T163734Z
LOCATION:OH112
SUMMARY:Physics Seminar
URL;TYPE=URI:/events/physics-seminar-0
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