University of Cambridge > Talks.cam > Cavendish Astrophysics Seminars > Chemical Tagging with APOGEE: Discovery of a population of stars with globular cluster chemical compositions in the field of the galactic bulge

Chemical Tagging with APOGEE: Discovery of a population of stars with globular cluster chemical compositions in the field of the galactic bulge

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact David Titterington.

I will report the discovery of a population of galactic bulge field stars with chemical compositions that are typical of globular cluster stars by SDSS -III/APOGEE. The newly discovered stars are homogeneously distributed across, and kinematically indistinguishable from, the rest of the bulge. The metallicity distribution of this new stellar population appears to be unimodal, peaking at [Fe/H]-1, thus being in disagreement with that of the galactic globular cluster system, being on average more 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 APOGEE (Apache Point Observatory Galactic Evolution Experiment) survey and data, I will briefly discuss the possible scenarios that may explain the origin of these stars.

This talk is part of the Cavendish Astrophysics Seminars series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2019 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity