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VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
X-WR-CALNAME:P&A Colloquium: Jeff Bary\, "The Effects of Large Cool Starpot
 s on the Age and Mass Determinations for Young Sun-like Stars"
X-WR-TIMEZONE:Eastern Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20261014T011412Z
UID:tag:localist.com\,2008:EventInstance_48535104720679
DTSTART:20250402T183000Z
DTEND:20250402T192000Z
DESCRIPTION:Join the Department of Physics and Astronomy on Wednesday\, Apr
 il 2 at 2:30pm in White Hall G09 for a colloquium presented by Jeff Bary (
 Colgate University). The title of the talk is\, "The Effects of Large Cool
  Spots on the Age and Mass Determinations of Young Sun-like Stars."  A rec
 eption will precede the colloquium at 2:00pm in White Hall 105/111.\n\n \n
 \nAbstract\n\nAccurate estimates of the ages and masses of stars in young 
 star forming regions are essential to developing a robust understanding of
  the formation and early evolution of stars and planetary systems. While t
 he masses for some young stars in binary systems may be measured directly\
 , ages must be inferred from fitting effective temperatures and stellar lu
 minosities to evolutionary models. Thus these age estimates depend on the 
 physics of such models\, but also rely on our ability to accurately constr
 ain the temperatures and luminosities of pre-main sequence stars -- a popu
 lation of objects known for their highly variable and capricious behavior.
  For twenty years\, the star formation community has accepted that a misma
 tch exists between spectral types derived from optical versus infrared spe
 ctra. The mismatches correspond to temperature differences on the order of
  several hundred Kelvin\,significantly impacting the inferred ages and mas
 ses. Over the last ten years\, modeling the infrared spectra of young low 
 mass stars has revealed the presence of cool starspots covering sizable fr
 actions (> 50%) of the stellar surfaces can explain the mismatches. Such s
 tudies indicate that we must both revise our measured effective temperatur
 es and luminosities as well as develop new evolutionary models to account 
 for the effects cool spots have on pre-main sequence evolution. With this 
 talk\, I will review our work developing spectral models of spotted stars 
 and the impact they have on ages and masses inferred for young stars.\n\n 
 \n\nBiography\n\nJeff Bary is the Sweet Family Chair and Professor of Phys
 ics and Astronomy at Colgate University. His research interests are primar
 ily focused on the formation of stars and the evolution of their protoplan
 etary disks. Recently\, his scholarly work has expanded to include a multi
 disciplinary exploration of dark skies and their role in the construction 
 of identity and sense of place in Appalachia. He is a native of Welch\, We
 st Virginia.
GEO:39.632955;-79.954715
LOCATION:White Hall\, G09
SUMMARY:P&A Colloquium: Jeff Bary\, "The Effects of Large Cool Starpots on 
 the Age and Mass Determinations for Young Sun-like Stars"
URL;VALUE=URI:https://cal.wvu.edu/event/pa-colloquium-jeff-bary-the-effects
 -of-large-cool-spots-on-the-age-and-mass-determinations-of-young-sun-like-
 stars
CATEGORIES:Meetings and Conferences
CATEGORIES:Presentations
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