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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


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
Issue number2 I
Publication statusPublished - 10 May 2007


  • Planetary systems
  • Stars: individual (HD 23127, HD 154857, HD 159868)


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