Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-25T02:27:33.203Z Has data issue: false hasContentIssue false
  • English
  • Français

Lithium in stars with exoplanets

Published online by Cambridge University Press:  23 April 2010

Garik Israelian
Garik Israelian*
Affiliation:
Instituto de Astrofisica de Canarias, Calle Via Lactea s/n, E38200, La Laguna, Tenerife, Canary Islands, Spain email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Our recent study of solar-type stars from the HARPS GTO sample provides highly accurate information with regard to Lithium abundances in stars with and without detected planets (Israelian et al. 2009). When the Li abundances of planet bearing stars are compared with the “single” stars, we find an excess of Li depletion in planet hosts with effective temperatures in the range 5700-5850 K. We also found that small amounts of Li have survived in the atmospheres of some planet-host solar analogs. Enhanced Li depletion in planet host stars puts constraints on mixing processes responsible for this phenomenon. We show that neither age nor metallicity are responsible for this observational fact.

Keywords

Stars: abundanceslate-typeplanetary systems
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S268: Light Elements in the Universe , November 2009 , pp. 285 - 290
Copyright
Copyright © International Astronomical Union 2010

References

Anders, E. & Grevesse, N. 1989, Geochim. Cosmochim. Acta, 53, 197CrossRefGoogle Scholar
Bouvier, J. 2008, A&A (Letters), 489, 53Google Scholar
Chen, Y. Q. & Zhao, G. 2006, AJ, 131, 1861Google Scholar
Cutispoto, G., Tagliaferri, G., de Medeiros, J. R., Pastori, L., Pasquini, L. & Andersen, J. 2003, A&A, 397, 987Google Scholar
DAntona, F. & Mazzitelli, I. 1994, ApJS, 90, 467CrossRefGoogle Scholar
Ecuvillon, A., Israelian, G., Santos, N. C., Shchukina, N. G., Mayor, M., & Rebolo, R. 2006, A&A, 445, 633Google Scholar
Gonzalez, G. 2008, MNRAS, 386, 928CrossRefGoogle Scholar
Gonzalez, G. & Laws, C. 2000, AJ, 119, 390CrossRefGoogle Scholar
Gray, R. O., Corbally, C. J., Garrison, R. F., McFadden, T., Bubar, E. J., McGahee, C. E., O'Donoghue, A. A., & Knox, E. R. 2006, AJ, 132, 161CrossRefGoogle Scholar
Holmberg, J., Nordström, B., & Andersen, J. 2009, A&A, 501, 941Google Scholar
Israelian, G., Santos, N., Mayor, M., & Rebolo, R. 2004, A&A, 414, 601Google Scholar
Israelian, G., Delgado Mena, E., Santos, N., Sousa, S., Mayor, M., Udry, S., Dominguez Cerdena, C, Rebolo, R., & Randich, S. 2009, Nature, 462, 189CrossRefGoogle Scholar
King, J. R., Deliyannis, C. P., Hiltgen, D. S., Stephen, A., Cunha, K., & Boesgaard, A. M. 1997, AJ, 113, 1871CrossRefGoogle Scholar
Luck, E. & Heiter, U. 2006, 131, 3069CrossRefGoogle Scholar
Mayor, M. et al. 2003, Messenger, 114, 20Google Scholar
Pace, G., Melendez, J., Pasquini, L., Carraro, G., Danziger, J., François, P., Matteucci, F., & Santos, N. C. 2009, A&A (Letters), 499, 9Google Scholar
Pasquini, L., Biazzo, K., Bonifacio, P., Randich, S., & Bedin, L. R. 2008, A&A, 489, 677Google Scholar
Piau, L. & Turck-Chièze, S. 2002, A&A, 566, 419Google Scholar
Pinsonneault, M., Kawaler, S. D., Sofia, S., & Demarque, P. 1989, ApJ, 338, 424CrossRefGoogle Scholar
Randich, S. 2008, Mem. Soc. Astr. It., 79, 516Google Scholar
Ryan, S. 2000, MNRAS (Letters), 316, 35CrossRefGoogle Scholar
Saffe, C., Gomez, M., & Chavero, C. 2005, A&A, 443, 609Google Scholar
Santos, N. C., Mayor, M., Naef, D., Pepe, F., Queloz, D. et al. 2002, A&A, 392, 215Google Scholar
Santos, N. C., Israelian, G., & Mayor, M. 2004, A&A, 415, 1153Google Scholar
Sestito, P. & Randich, S. 2005, A&A, 442, 615Google Scholar
Sestito, P., Randich, S., & Bragaglia, A. 2007, A&A, 465, 185Google Scholar
Sousa, S. G., Santos, N. C., Mayor, M., Udry, S., Casagrande, L. et al. 2008, A&A, 487, 373Google Scholar
Takeda, Y., Kawanomoto, S., Honda, S., Ando, H., & Sakurai, T. 2007, A&A, 468, 663Google Scholar
Valenti, J. & Fischer, D. 2005, ApJS, 159, 141CrossRefGoogle Scholar
Wright, J., Marcy, G. W., Butler, R. P., & Vogt, S. S. 2004, ApJS, 152, 261CrossRefGoogle Scholar
Yadav, R. K. S., Bedin, L. R., Piotto, G., Anderson, J., Cassisi, S. et al. 2008, A&A, 484, 609Google Scholar