Abundacne Patterns in High-Velocity RAVE Stars

Details Abundacne Patterns in High-Velocity RAVE Stars Abundacne Patterns in High-Velocity RAVE Stars

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20917211f&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #172.11; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

We present abundance results for a sample of high velocity stars selected from the RAVE survey. Previous studies with smaller samples have shown that high velocity stars from the outer halo have lower [alpha/Fe] ratios than local halo stars. The expanded sample includes stars selected purely by their galactocentric radial velocities. At this point, the sample includes at least one new low-alpha star, a s-process element-enhanced C-rich giant and an [Fe/H] = -2.8 giant with a lithium abundance about a factor of 30 above the Spite Plateau.
Funding for this research is provided by the Keck and Moore Foundations, as well as the the National Science Foundation
through AST-0508996, is gratefully acknowledged.

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