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.
@article{arxiv.astro-ph/0702213,
title = {New Planets around Three G Dwarfs},
author = {Simon J. O'Toole and R. Paul Butler and C. G. Tinney and Hugh R. A. Jones and Geoffrey W. Marcy and Brad Carter and Chris McCarthy and Jeremy Bailey and Alan J. Penny and Kevin Apps and Debra Fischer},
journal= {arXiv preprint arXiv:astro-ph/0702213},
year = {2011}
}
Comments
23 pages, 5 figures, accepted for publication in ApJ