Chemical analysis of 8 recently discovered extra-solar planet host stars *
Received 22 May 2000 / Accepted 8 August 2000
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 -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].
Key words: stars: abundances stars: chemically peculiar stars: planetary systems
Send offprint requests to: Nuno.Santos@obs.unige.ch
© European Southern Observatory (ESO) 2000
Online publication: December 5, 2000