FIVE PLANETS AND AN INDEPENDENT CONFIRMATION OF HD 196885Ab FROM LICK OBSERVATORY

Journal Article · Thu Oct 01 04:00:00 EDT 2009 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/703/2/1545· OSTI ID:21371890

Fischer, Debra; Isaacson, Howard; Giguere, Matt; McCarthy, Chris ^[1]; Driscoll, Peter ^[2]; Marcy, Geoffrey W; Howard, Andrew; Peek, Katherine ^[3]; Valenti, Jeff ^[4]; Wright, Jason T ^[5]; Henry, Gregory W ^[6]

---

1. Department of Physics and Astronomy, San Francisco State University, San Francisco, CA 94132 (United States)
2. Department of Earth and Planetary Science, Johns Hopkins University, Baltimore, MD (United States)
3. Department of Astronomy, University of California, Berkeley, Berkeley, CA (United States)
4. Space Telescope Science Institute, Baltimore, MD (United States)
5. Cornell University, Ithaca, NY (United States)
6. Center of Excellence in Information Systems, Tennessee State University, 3500 John A. Merritt Blvd., Box 9501, Nashville, TN 37209 (United States)

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 {sub 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 {sub Jup}, a {sub rel} = 2.86 AU, an eccentricity e = 0.7 and orbits a metal-rich, F7V star. HD 87883b has Msin i = 1.78 M {sub Jup}, a {sub rel} = 3.6 AU, e = 0.53 and orbits a metal-rich K0V star. HD 89307b has Msin i = 1.78 M {sub Jup}, a {sub rel} = 3.3 AU, e = 0.24 and orbits a G0V star with slightly subsolar metallicity. HD 148427b has Msin i = 0.96 M {sub Jup}, a {sub 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 {sub Jup}, a {sub rel} = 2.37 AU, and orbital eccentricity of 0.48, in agreement with the independent discovery by Correia et al.

• OSTI ID: 21371890
• Journal Information: Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 2 Vol. 703; ISSN ASJOAB; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
BINARY STARS
ELEMENTS
METALS
ORBITS
PLANETS
STARS
VELOCITY