O'Toole, Simon J; Butler, R Paul; Tinney, C G; Jones, Hugh R A; Marcy, Geoffrey W; Carter, Brad; McCarthy, Chris; Bailey, Jeremy; Penny, Alan J; Apps, Kevin; Fischer, Debra
arXiv.org,
02/2007
Paper
Doppler velocity measurements from the Anglo-Australian Planet Search reveal planetary mass companions to HD23127, HD159868, and a possible second planetary companion to HD154857. These stars are all G dwarfs. The companions are all in eccentric orbits with periods ranging from 1.2 to >9.3yr, minimum (M sin i) masses ranging from 1.5 to >4.5 Mjup, and semimajor axes between 1 and >4.5 AU. The orbital parameters are updated for the inner planet to HD154857, while continued monitoring of the outer companion is required to confirm its planet status.
