Chemical analysis of 8 recently discovered extra-solar planet host stars

Bibcode
2000A&A...363..228S
Santos, N. C.; Israelian, G.; Mayor, M.
Bibliographical reference

Astronomy and Astrophysics, v.363, p.228-238 (2000)

Advertised on:
11
2000
Journal
Astronomy and Astrophysics
Number of authors
3
IAC number of authors
1
Citations
150
Refereed citations
129
Description
We present the chemical analysis of a new set of stars known to harbor low mass companions, namely HD 1237, HD 52265, HD 82943, HD 83443, HD 169830, and HD 202206. In addition, we have also analyzed HD 13445 and HD 75289, already studied elsewhere. The abundances of C and alpha -elements O, S, Si, Ca and Ti are presented and discussed in the context of the metallicity distribution of the stars with extra-solar planets. We compare the metallicity distribution of stars with planets with the same distribution of field dwarfs. The results further confirm that stars with planets are over-abundant in [Fe/H]. Based on observations collected at the La Silla Observatory, ESO (Chile), with the echelle spectrograph CORALIE at the 1.2-m Euler Swiss telescope.
Type
Refereed

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