Five planets and an independent confirmation of HD 196885ab from lick observatory

  • Debra Fischer
  • , Peter Driscoll
  • , Howard Isaacson
  • , Matt Giguere
  • , Geoffrey W. Marcy
  • , Jeff Valenti
  • , Jason T. Wright
  • , Gregory W. Henry
  • , John Asher Johnson
  • , Andrew Howard
  • , Katherine Peek
  • , Chris Mccarthy

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)1545-1556
Number of pages12
JournalAstrophysical Journal
Volume703
Issue number2
DOIs
StatePublished - 2009

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint

Dive into the research topics of 'Five planets and an independent confirmation of HD 196885ab from lick observatory'. Together they form a unique fingerprint.

Cite this