SIMBAD references

2000ApJ...545..504B - Astrophys. J., 545, 504-511 (2000/December-2)

Planetary companions to the metal-rich stars BD -10°3166 and HD 52265.


Abstract (from CDS):

Precise Doppler measurements from the Keck/HIRES spectrometer reveal periodic Keplerian velocity variations in the stars BD -10°3166 and HD 52265. BD -10°3166 (K0 V) has a period of 3.487 days and a semiamplitude of 61 m.s–1. An orbital fit yields a companion mass Msini=0.48 MJUP, a semimajor axis of a=0.046 AU, and an eccentricity of e=0.05 (consistent with zero). HD 52265 (G0 V) has a period of 119.0 days, a semiamplitude of 45 m.s–1, an eccentricity of 0.29, a semimajor axis of a=0.49 AU, and companion mass Msini=1.13 MJUP. Both of these stars are metal-rich and chromospherically inactive. The mean metallicity of the 33 stars that have detected planets is significantly greater than that of typical stars in the solar neighborhood. We present a catalog of the 35 extrasolar planets known to date, with updated orbits and Msini values.

Photometry of BD -10°3166 was obtained with an automated telescope to search for transits. No transits were found, indicating that the inclination of the orbit i is less than 84°.3 and sini is less than 0.995. The photometry also reveals no photometric variability larger than 0.0008±0.0009 mag at the orbital period of the planet. This confirms that neither starspots nor pulsations are the cause of the radial velocity variations in BD -10°3166.

Abstract Copyright:

Journal keyword(s): Stars: Planetary Systems - stars: individual (BD -10 3166, HD 52265)

Simbad objects: 71

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