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The spectroscopic orbit of the planetary companion transiting HD 209458

Title
The spectroscopic orbit of the planetary companion transiting HD 209458
Type
Article in International Scientific Journal
Year
2000
Authors
Mazeh, T
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Naef, D
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Torres, G
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Latham, DW
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Mayor, M
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Beuzit, JL
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Brown, TM
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Buchhave, L
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Burnet, M
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Carney, BW
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Charbonneau, D
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Drukier, GA
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Larid, JB
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Pepe, F
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Perrier, C
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Queloz, D
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N.C. Santos
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Sivan, JP
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Udry, S
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Zucker, S
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Journal
Title: Astrophysical JournalImported from Authenticus Search for Journal Publications
Vol. 532
Pages: L55-L58
ISSN: 0004-637X
Other information
Authenticus ID: P-009-2SS
Abstract (EN): We report a spectroscopic orbit with period P = 3.52433 +/- 0.00027 days for the planetary companion that transits the solar-type star HD 209458. For the metallicity, mass, and radius of the star, we derive [Fe/H] = 0.00 +/- 0.02, M* = 1.1 +/- 0.1 M-circle dot, and R* = 1.2 +/- 0.1 R-circle dot. This is based on a new analysis of the iron lines in our HIRES template spectrum and also on the absolute magnitude, effective temperature, and color of the star, and it uses isochrones from four different sets of stellar evolution models. Using these values for the stellar parameters, we reanalyze the transit data and derive an orbital inclination of i = 86 degrees.1 +/- 1 degrees.6. For the planet, we derive a mass of M-p = 0.69 +/- 0.05 M-Jup, a radius of R-p = 1.40 +/- 0.17 R-Jup, and a density of rho = 0.31 +/- 0.07 g cm(-3).
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 4
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