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SUMMARY:Chemical Tagging with APOGEE: Discovery of a population of stars w
 ith globular cluster chemical compositions in the field of the galactic bu
 lge - Ricardo Schiavon (Liverpool John Moores University)
DTSTART:20151117T140000Z
DTEND:20151117T150000Z
UID:TALK61732@talks.cam.ac.uk
CONTACT:David Titterington
DESCRIPTION:I will report the discovery of a population of galactic bulge 
 field stars with chemical compositions that are typical of globular cluste
 r stars by SDSS-III/APOGEE.  The newly discovered stars are homogeneously 
 distributed across\, and kinematically indistinguishable from\, the rest o
 f the bulge.  The metallicity distribution of this new stellar population 
 appears to be unimodal\, peaking at [Fe/H]-1\, thus being in disagreeme
 nt with that of the galactic globular cluster system\, being on average mo
 re metal-rich than the halo clusters\, and on average more metal-poor than
  those in the bulge and disk.  Besides providing a brief description of AP
 OGEE (Apache Point Observatory Galactic Evolution Experiment) survey and d
 ata\, I will briefly discuss the possible scenarios that may explain the o
 rigin of these stars.\n
LOCATION:Martin Ryle Seminar Room\, Kavli Institute
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