Spectroscopic characteristics of extra-solar planets and their host-stars

• Type: Article in International Conference Proceedings Book
• Date: 2005

Authors

N.C. Santos (Author) Other

Conference proceedings International

Title: Proceedings of the 13th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun - Proceedings, Vols 1 and 2

Pages: 221-230

13th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun

Hamburg, GERMANY, JUL 05-09, 2004

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Other information

Authenticus ID: P-000-6G9

Abstract (EN): Current surveys have already revealed about 120 extra-solar planets orbiting solar-type stars. The discovered planets present a wide variety of orbital elements and masses, which have raised many problems and questions regarding the processes involved in their formation and evolution. One particular fact that is helping us to understand the mechanisms of planetary formation has to do with the planet host stars themselves. In fact, these were found to have, on average, a metal content higher than the one found in stars without detected planetary companions. The most recent studies seem to favor that this metallicity "excess" is original from the cloud that gave origin to the star/planetary system, and thus favor a scenario where planet formation is more efficient in metal-rich environments. In this contribution we will mainly focus on the most recent results on the chemical abundances of planet-host stars, and what kind of information they axe bringing.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10