The spectroscopic orbit of the planetary companion transiting HD 209458

• Type: Article in International Scientific Journal
• Date: 2000

Authors

Mazeh, T (Author) Other; Naef, D (Author) Other; Torres, G (Author) Other; Latham, DW (Author) Other; Mayor, M (Author) Other; Beuzit, JL (Author) Other; Brown, TM (Author) Other; Buchhave, L (Author) Other; Burnet, M (Author) Other; Carney, BW (Author) Other; Charbonneau, D (Author) Other; Drukier, GA (Author) Other; Larid, JB (Author) Other; Pepe, F (Author) Other; Perrier, C (Author) Other; Queloz, D (Author) Other; N.C. Santos (Author) Other; Sivan, JP (Author) Other; Udry, S (Author) Other; Zucker, S (Author) Other

Journal

Title: Astrophysical Journal

Vol. 532

Pages: L55-L58

ISSN: 0004-637X

Publisher: American Astronomical Society

Indexing

ISI Web of Knowledge - 238 Citations

Scopus - 231 Citations

Other information

Authenticus ID: P-009-2SS

DOI: 10.1086/312558

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