Five Planets and an Independent Confirmation of HD 196885Ab from Lick Observatory
Abstract
We present time series Doppler data from Lick Observatory that reveal the presence of long-period planetary companions orbiting nearby stars. The typical eccentricity of these massive planets are greater than the mean eccentricity of known exoplanets. HD 30562b has Msin i = 1.29 M Jup, with semimajor axis of 2.3 AU and eccentricity 0.76. The host star has a spectral type F8V and is metal rich. HD 86264b has Msin i = 7.0 M Jup, a rel = 2.86 AU, an eccentricity e = 0.7 and orbits a metal-rich, F7V star. HD 87883b has Msin i = 1.78 M Jup, a rel = 3.6 AU, e = 0.53 and orbits a metal-rich K0V star. HD 89307b has Msin i = 1.78 M Jup, a rel = 3.3 AU, e = 0.24 and orbits a G0V star with slightly subsolar metallicity. HD 148427b has Msin i = 0.96 M Jup, a rel = 0.93 AU, eccentricity of 0.16 and orbits a metal rich K0 subgiant. We also present velocities for a planet orbiting the F8V metal-rich binary star, HD 196885A. The planet has Msin i = 2.58 M Jup, a rel = 2.37 AU, and orbital eccentricity of 0.48, in agreement with the independent discovery by Correia et al.
Based on observations obtained at the Lick Observatory, which is operated by the University of California.- Publication:
-
The Astrophysical Journal
- Pub Date:
- October 2009
- DOI:
- 10.1088/0004-637X/703/2/1545
- arXiv:
- arXiv:0908.1596
- Bibcode:
- 2009ApJ...703.1545F
- Keywords:
-
- planetary systems;
- stars: individual: HD 30562 HD 86264 HD 87883 HD 89307 HD 148427 HD 196885;
- Astrophysics - Earth and Planetary Astrophysics;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 12 figures, 8 tables, accepted ApJ