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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20190314T103000
DTEND;TZID=Atlantic/Canary:20190314T113000
UID:iactalks-1252
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1252
CREATED:2019-03-14T10:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Chemical Cartography in the  Milky Way with SDSS/APOGEE
DESCRIPTION:Chemical Cartography in the  Milky Way with SDSS/APOGEE\nProf. 
 Jon Holtzman\n\nThe SDSS Apache Point Observatory Galactic Evolution 
 Experiment (APOGEE) hascollected high resolution near-IR spectra of severa
 l hundred thousand starsacross the Milky Way. I'll describe some observati
 onal results about thespatial variation of chemical abundances as a functi
 on of Galactocentricradius and distance from the midplane, discussing mean
  abundances, metallicitydistribution function, and the variation of a
 bundance ratios of multipleelements. Additional information related to ste
 llar ages can be obtainedfrom [C/N] for red giant stars. Several lines of 
 evidence suggest that radialmigration has had a significant impact on
  the Galactic disk. The observed patterns ofabundance ratios may prov
 ide observational constraints on nucleosynthetic yields.
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