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Enhanced lithium depletion in Sun-like stars with orbiting planets


The surface abundance of lithium on the Sun is 140 times less than the protosolar value1, yet the temperature at the base of the surface convective zone is not hot enough to burn—and hence deplete—Li (refs 2, 3). A large range of Li abundances is observed4,5 in solar-type stars of the same age, mass and metallicity as the Sun, but such a range is theoretically difficult to understand3,6,7. An earlier suggestion8,9,10 that Li is more depleted in stars with planets was weakened by the lack of a proper comparison sample of stars without detected planets. Here we report Li abundances for an unbiased sample of solar-analogue stars with and without detected planets. We find that the planet-bearing stars have less than one per cent of the primordial Li abundance, while about 50 per cent of the solar analogues without detected planets have on average ten times more Li. The presence of planets may increase the amount of mixing and deepen the convective zone to such an extent that the Li can be burned.

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Figure 1: Lithium abundance plotted against effective temperature in solar-analogue stars with and without detected planets.
Figure 2: Lithium and physical properties of planet-hosting solar-analogue and comparison stars.


  1. Anders, E. & Grevesse, N. Abundances of the elements—meteoritic and solar. Geochim. Cosmochim. Acta 53, 197–214 (1989)

    Article  ADS  CAS  Google Scholar 

  2. D’Antona, F. & Mazzitelli, I. New pre-main-sequence tracks for M less than or equal to 2.5 solar mass as tests of opacities and convection model. Astrophys. J. Suppl. Ser. 90, 467–500 (1994)

    Article  ADS  Google Scholar 

  3. Maeder, A. Physics, Formation and Evolution of Rotating Stars 215–351 (Astron. Astrophys. Library, Springer, 2009)

    Google Scholar 

  4. Favata, F., Micela, G. & Sciortino, S. Lithium abundance in a volume-limited sample of nearby main sequence G and K stars. Astron. Astrophys. 311, 951–960 (1996)

    ADS  CAS  Google Scholar 

  5. Randich, S. Light element abundances in solar-type members of open clusters. Mem. Soc. Astron. Ital. 79, 516–523 (2008)

    ADS  CAS  Google Scholar 

  6. Pinsonneault, M. Mixing in stars. Annu. Rev. Astron. Astrophys. 35, 557–605 (1997)

    Article  ADS  CAS  Google Scholar 

  7. Pinsonneault, M., Kawaler, S. D., Sofia, S. & Demarque, P. Evolutionary models of the rotating sun. Astrophys. J. 338, 424–452 (1989)

    Article  ADS  CAS  Google Scholar 

  8. Israelian, G., Santos, N., Mayor, M. & Rebolo, R. Lithium in stars with exoplanets. Astron. Astrophys. 414, 601–611 (2004)

    Article  ADS  CAS  Google Scholar 

  9. Gonzalez, G. Parent stars of extrasolar planets. IX. Lithium abundances. Mon. Not. R. Astron. Soc. 386, 928–934 (2008)

    Article  ADS  CAS  Google Scholar 

  10. Takeda, Y., Kawanomoto, S., Honda, S., Ando, H. & Sakurai, T. Behavior of Li abundances in solar-analog stars. Evidence for line-width dependence. Astron. Astrophys. 468, 663–677 (2007)

    Article  ADS  CAS  Google Scholar 

  11. Mayor, M. et al. Setting new standards with HARPS. The Messenger 114, 20–24 (2003)

    ADS  Google Scholar 

  12. Sousa, S. et al. Spectroscopic parameters for 451 stars in the HARPS GTO planet search program. Stellar [Fe/H] and the frequency of exo-Neptunes. Astron. Astrophys. 487, 373–381 (2008)

    Article  ADS  CAS  Google Scholar 

  13. Feigelson, E. D. & Nelson, P. I. Statistical methods for astronomical data with upper limits. I—Univariate distributions. Astrophys. J. 293, 192–206 (1985)

    Article  ADS  MathSciNet  Google Scholar 

  14. Zappala, R. R. Lithium abundances of stars in open clusters. Astrophys. J. 172, 57–74 (1972)

    Article  ADS  CAS  Google Scholar 

  15. Sestito, P. & Randich, S. Time scales of Li evolution: a homogeneous analysis of open clusters from ZAMS to late-MS. Astron. Astrophys. 442, 615–627 (2005)

    Article  ADS  CAS  Google Scholar 

  16. Pace, G. et al. An investigation of chromospheric activity spanning the Vaughan-Preston gap: impact on stellar ages. Astron. Astrophys. 499, L9–L12 (2009)

    Article  ADS  CAS  Google Scholar 

  17. Wright, J., Marcy, G. W., Butler, R. P. & Vogt, S. S. Chromospheric Ca II emission in nearby F, G, K, and M stars. Astrophys. J. Suppl. Ser. 152, 261–295 (2004)

    Article  ADS  CAS  Google Scholar 

  18. Paulson, D. B., Saar, S. H., Cochran, W. D. & Hatzes, A. P. Searching for planets in the Hyades. II. Some implications of stellar magnetic activity. Astron. J. 124, 572–582 (2002)

    Article  ADS  Google Scholar 

  19. Cutispoto, G. et al. Fast-rotating nearby solar-type stars sin i and X-ray luminosities relationships. II. Li abundances, v sin i and X-ray luminosities relationships. Astron. Astrophys. 397, 987–995 (2003)

    Article  ADS  CAS  Google Scholar 

  20. Santos, N. C., Israelian, G. & Mayor, M. Spectroscopic [Fe/H] for 98 extra-solar planet-host stars. Exploring the probability of planet formation. Astron. Astrophys. 415, 1153–1166 (2004)

    Article  ADS  CAS  Google Scholar 

  21. Piau, L. & Turck-Chièze, S. Lithium depletion in pre-main-sequence solar-like stars. Astron. Astrophys. 566, 419–434 (2002)

    ADS  CAS  Google Scholar 

  22. Ecuvillon, A. et al. Oxygen abundances in planet-harbouring stars. Comparison of different abundance indicators. Astron. Astrophys. 445, 633–645 (2006)

    Article  ADS  CAS  Google Scholar 

  23. Pasquini, L., Biazzo, K., Bonifacio, P., Randich, S. & Bedin, L. R. Solar twins in M 67. Astron. Astrophys. 489, 677–684 (2008)

    Article  ADS  CAS  Google Scholar 

  24. Yadav, R. et al. Ground-based CCD astrometry with wide-field imagers. II. A star catalog for M 67: WFI@2.2 m MPG/ESO astrometry, FLAMES@VLT radial velocities Astron. Astrophys. 484, 609–620 (2008)

    Article  ADS  Google Scholar 

  25. Sestito, P., Randich, S. & Bragaglia, A. Element abundances in the metal-rich open cluster NGC 6253. Astron. Astrophys. 465, 185–196 (2007)

    Article  ADS  CAS  Google Scholar 

  26. Bouvier, J. Lithium depletion and the rotational history of exoplanet host stars. Astron. Astrophys. 489, L53–L86 (2008)

    Article  ADS  CAS  Google Scholar 

  27. Saffe, C., Gómez, M. & Chavero, C. On the ages of exoplanet host stars. Astron. Astrophys. 443, 609–626 (2005)

    Article  ADS  CAS  Google Scholar 

  28. Gray, R. et al. Contributions to the nearby stars (NStars) project: spectroscopy of stars earlier than M0 within 40 pc—the southern sample. Astron. J. 132, 161–170 (2006)

    Article  ADS  CAS  Google Scholar 

  29. Santos, N. C. et al. The CORALIE survey for southern extra-solar planets. IX. A 1.3-day period brown dwarf disguised as a planet. Astron. Astrophys. 392, 215–229 (2002)

    Article  ADS  CAS  Google Scholar 

  30. Valenti, J. A. & Fischer, D. A. Spectroscopic properties of cool stars (SPOCS). I. 1040 F, G, and K dwarfs from Keck, Lick, and AAT planet search programs. Astrophys. J. Suppl. Ser. 159, 141–166 (2005)

    Article  ADS  CAS  Google Scholar 

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This research has been supported by The Spanish Ministry of Science and Innovation (MICINN). N.C.S. and S.G.S. acknowledge support from the Fundacao para a Ciencia e a Tecnologia, Portugal, through the programme ‘Ciencia 2007’.

Author Contributions All authors participated in data collection, analysis, interpretation and commented on the manuscript. G.I. led the project and wrote the paper.

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Correspondence to Garik Israelian.

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Israelian, G., Mena, E., Santos, N. et al. Enhanced lithium depletion in Sun-like stars with orbiting planets. Nature 462, 189–191 (2009).

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