SIMBAD references

2001A&A...373.1019S - Astronomy and Astrophysics, volume 373, 1019-1031 (2001/7-3)

The metal-rich nature of stars with planets.


Abstract (from CDS):

With the goal of confirming the metallicity ``excess'' present in stars with planetary-mass companions, we present in this paper a high-precision spectroscopic study of a sample of dwarfs included in the CORALIE extrasolar planet survey. The targets were chosen according to the basic criteria that 1) they formed part of a limited volume and 2) they did not present the signature of a planetary host companion. A few stars with planets were also observed and analysed; namely, HD 6434, HD 13445 (Gl86), HD 16141, HD 17051 (ι Hor), HD 19994, HD 22049 (ε Eri), HD 28185, HD 38529, HD 52265, HD 190228, HD 210277 and HD 217107. For some of these objects there had been no previous spectroscopic studies. The spectroscopic analysis was done using the same technique as in previous work on the metallicity of stars with planets, thereby permitting a direct comparison of the results. The work described in this paper thus represents the first uniform and unbiased comparison between stars with and without planetary-mass companions in a volume-limited sample. The results show that 1) stars with planets are significantly metal-rich, and 2) that the source of the metallicity is most probably ``primordial''. The results presented here may impose serious constraints on planetary system formation and evolution models.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: chemically peculiar - planetary systems

Simbad objects: 99

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2001A&A...373.1019S and select 'bookmark this link' or equivalent in the popup menu