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Li survey in giant stars : probing non-standard stellar physics

  • N. Lagarde (a1), C. Charbonnel (a1) (a2), G. Jasniewicz (a3), P. North (a4), M. Shetrone (a5), J. Hollek (a5) and V. V. Smith (a6)...

Abstract

Lithium has long been known to be a good tracer of non-standard mixing processes occurring in stellar interiors. Here we present the results of a large survey aimed at determining the surface Li abundance in a sample of about 800 giant (RGB and AGB) stars with accurate Hipparcos parallaxes. We compare the observed Li behaviour with that predicted by stellar models including rotation and thermohaline mixing.

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References

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Charbonnel, C. & Zahn, J. P. 2007, A&A, 467, L15
Charbonnel, C. & Talon, S. 1999, A&A, 351, 635
Maeder, A. & Zahn, J. P. 1998, A&A, 334, 1000
Palacios, A., Talon, S., Charbonnel, C., & Forestini, M. 2003, A&A, 399, 603
Smiljanic, R., Pasquini, L., Charbonnel, C., & Lagarde, N. 2009, A&A, in press, astro-ph 0910.4399
Zahn, J. P. 1992, A&A, 265, 115
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Keywords

Li survey in giant stars : probing non-standard stellar physics

  • N. Lagarde (a1), C. Charbonnel (a1) (a2), G. Jasniewicz (a3), P. North (a4), M. Shetrone (a5), J. Hollek (a5) and V. V. Smith (a6)...

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