Higher depletion of lithium in planet host stars: no age and mass effect

Bibcode
2010A&A...512L...5S
DOI
10.1051/0004-6361/201014125
Sousa, S. G.; Fernandes, J.; Israelian, G.; Santos, N. C.
Bibliographical reference

Astronomy and Astrophysics, Volume 512, id.L5

Advertised on:
3
2010
Journal
Astronomy and Astrophysics
Number of authors
4
IAC number of authors
1
Citations
34
Refereed citations
28
Description
Recent observational work by Israelian et al. has shown that sun-like planet host stars in the temperature range 700 K < Teff < 5850 K have lithium abundances that are significantly lower than those observed for “single” field stars. In this letter we use stellar evolutionary models to show that differences in stellar mass and age are not responsible for the observed correlation. This result, along with the finding of Israelian et al., strongly suggest that the observed lithium difference is likely linked to some process related to the formation and evolution of planetary systems.
Related projects
Project Image
Observational Tests of the Processes of Nucleosynthesis in the Universe
Several spectroscopic analyses of stars with planets have recently been carried out. One of the most remarkable results is that planet-harbouring stars are on average more metal-rich than solar-type disc stars. Two main explanations have been suggested to link this metallicity excess with the presence of planets. The first of these, the “self
Garik
Israelian
In progress
Type
Refereed
Stellar & Interstellar Physics (FEEI)

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