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UID:UW-Physics-Event-4125
DTSTART:20160317T203000Z
DTEND:20160317T220000Z
DTSTAMP:20260415T064954Z
LAST-MODIFIED:20160304T191704Z
LOCATION:4421 Sterling Hall\, Coffee and cookies at 3:30 PM\, Talk at 
 3:45 PM
SUMMARY:The Role of Dwarf-Dwarf Galaxy Interactions in Galaxy Assembly
 \, Astronomy Colloquium\, Sabrina Stierwalt\, NRAO
DESCRIPTION:Massive galaxy mergers are an important mode of galaxy evo
 lution and are observed to inspire intense starbursts\, the growth of 
 AGN\,and significant rearranging of the galaxies' gas and dust. Howeve
 r\, despite the fact that the majority of mergers at all epochs occur 
 among low mass galaxies\, whether these effects occur in the shallow g
 ravitational potential wells of dwarf galaxies remains mostly uncharte
 d territory. Mergers at low redshift in particular offer a high resolu
 tion look at a process that set the stage for galaxy assembly at earli
 er epochs when such low metallicity mergers were more frequent. I will
  present initial results and future plans for TiNy Titans\, the first 
 systematic study of a sample of interacting dwarf galaxies and the mec
 hanisms governing their star formation and subsequent processing of th
 e ISM. We find multi-wavelength evidence based on star formation rates
 \, gas and dust content that mergers proceed substantially differently
  at low masses. Our survey further uncovers galaxy groups with only lo
 w-mass members\, a discovery that appears to contradict predictions of
  structure formation from hydrodynamic cosmological simulations.
URL:https://www.physics.wisc.edu/events/?id=4125
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