When Do Planets Form? A Search for Extra-solar Planets Around Metal-Poor Stars

Details When Do Planets Form? A Search for Extra-solar Planets Around Metal-Poor Stars When Do Planets Form? A Search for Extra-solar Planets Around Metal-Poor Stars

2003-11-01

arxiv.org/abs/astro-ph/0311013v1

Astronomy and Astrophysics

Astrophysics

2 pages, to appear in the proceedings of the XIXth IAP Symposium - Extrasolar Planets: Today and Tomorrow, ASP Conference Seri

Scientific paper

We present preliminary results from our spectroscopic search for planets within 1 AU of metal-poor field dwarfs using NASA time with HIRES on Keck I. The core accretion model of gas giant planet formation is sensitive to the metallicity of the raw material, while the disk instability model is not. By observing metal-poor stars in the field we eliminate the role of dynamical interactions in dense stellar environments, such as a globular cluster. The results of our survey should allow us to distinguish the relative roles of the two competing giant planet formation scenarios.

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