New planets around three G dwarfs

Simon J. O'Toole, R. Paul Butler, C. G. Tinney, Hugh R. A. Jones, Geoffrey W. Marcy, Brad Carter, Chris McCarthy, Jeremy Bailey, Alan J. Penny, Kevin Apps, Debra Fischer

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

Doppler velocity measurements from the Anglo-Australian Planet Search reveal planetary mass companions to HD 23127, HD 159868, and a possible second planetary companion to HD 154857. These stars are all G dwarfs. The companions are all in eccentric orbits with periods ranging from 1.2 to > 9.3 yr, minimum ( M sin i) masses ranging from 1.5 to > 4.5 MJ, and semimajor axes between 1 and > 4.5 AU. The orbital parameters are updated for the inner planet to HD 154857, while continued monitoring of the outer companion is required to confirm its planet status.

Original languageEnglish
Pages (from-to)1636-1641
Number of pages6
JournalAstrophysical Journal Letters
Volume660
Publication statusPublished - 10 May 2007

Keywords

  • planetary systems
  • stars : individual (HD 23127, HD 154857, HD 159868)
  • EXTRASOLAR PLANETS
  • SPACED DATA
  • STARS
  • SEARCH
  • PRECISION
  • HD-160691
  • KECK
  • COMPANIONS
  • EXOPLANETS
  • CATALOG

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