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VERSION:2.0
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PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-4915
DTSTART:20181004T203000Z
DTEND:20181004T220000Z
DTSTAMP:20260419T055543Z
LAST-MODIFIED:20180926T134055Z
LOCATION:4421 Sterling Hall\, Coffee and cookies 3:30 PM. Talk Begins 
 at 3:45 PM
SUMMARY:Chemical Cartography of the Milky Way Disk with SDSS/APOGEE\, 
 Astronomy Colloquium\, Jon Holtzman\, Department Head\, Astronomy\, Ne
 w Mexico State University
DESCRIPTION:The SDSS Apache Point Observatory Galactic Evolution Exper
 iment (APOGEE) has collected high resolution near-IR spectra of severa
 l hundred thousand stars across the Milky Way. I'll describe some obse
 rvational results about the spatial variation of chemical abundances a
 s a function of Galactocentric radius and distance from the midplane\,
  discussing mean abundances\, metallicity
\ndistribution function\, an
 d the variation of abundance ratios of multiple elements. Additional i
 nformation related to stellar ages can be obtained from [C/N] for red 
 giant stars. Several lines of evidence suggest that radial migration h
 as had a significant impact on the Galactic disk.
URL:https://www.physics.wisc.edu/events/?id=4915
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