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SUMMARY:Protoplanetary Disk Chemodynamics as a Scale for Weighing Young St
 ars and Planets
DTSTART;VALUE=DATE-TIME:20200512T075000Z
DTEND;VALUE=DATE-TIME:20200512T081000Z
DTSTAMP;VALUE=DATE-TIME:20240704T115618Z
UID:indico-contribution-41@meetings.aip.de
DESCRIPTION:Speakers: Patrick Sheehan (Northwestern University)\nMuch of o
 ur understanding of star and planet formation hinges on the accuracy of st
 ellar masses and ages derived from pre-main sequence evolutionary track mo
 dels. Consequently\, errors in evolutionary track models could propagate t
 hrough much of our understanding of star and planet formation. Moreover\, 
 there remain few constraints on pre-main sequence evolutionary tracks owin
 g in large part to the lack of pre-main sequence stars with precisely meas
 ured masses.  Fortunately\, Keplerian rotation in protoplanetary disks pro
 vides an avenue towards directly measuring the masses of young stars\, and
  therefore could provide large samples of well measured masses with which 
 to constrain evolutionary tracks. I will present my efforts using radiativ
 e transfer forward modeling of ALMA spectral line observations\, in conjun
 ction with precise distance measurements from Gaia that are used to break 
 the stellar mass-distance degeneracy\, to directly measure pre-main sequen
 ce stellar masses with precisions as high as 2%. I will also present effor
 ts to extend these methods to measure stellar masses for embedded protosta
 rs\, where the traditional method of estimating masses from evolutionary t
 racks can be impossible\, as well as an attempt to directly measure the ma
 ss of a young purported protoplanet.\n\nhttps://meetings.aip.de/event/1/co
 ntributions/41/
LOCATION:Leibniz Institute for Astrophysics Potsdam (AIP) Lecture Hall
URL:https://meetings.aip.de/event/1/contributions/41/
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