New extra-solar planets: the metallicity distribution revisited

被引：0
|
作者：
Santos, NC [1 ]
Israelian, G [1 ]
Mayor, M [1 ]
机构：
[1] Observ Geneva, CH-1290 Sauverny, Switzerland
来源：
PLANETARY SYSTEMS IN THE UNIVERSE OBSERVATION, FORMATION AND EVOLUTION | 2004年 / 202期
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D O I：
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中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the spectroscopy results of a new set of planetary host stars discovered in the context of the Geneva extra-solar planet search programme. The analysis was based on high S/N spectra obtained with the CORALIE spectrograph at the 1.2-m Euler Swiss Telescope (at La Silla, ESO). We revisit the metallicity distribution of stars with planets. The present sample, largely enriched by the inclusion of the most recent discoveries, strongly suggests that stars with planets are anomalously metal rich, but that the source of the metallicity excess is most probably "primordial".
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页码：118 / 120
页数：3
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