New planets around three G Dwarfs
- O'Toole, Simon J.
- Butler, R. Paul
- Tinney, Chris G.
- Jones, Hugh R. A.
- Marcy, Geoffrey W.
- Carter, Brad
- McCarthy, Chris
- Bailey, Jeremy
- Penny, Alan J.
- Apps, Kevin
- Fischer, Debra A.
DOIAbstract
[Abstract]: Doppler velocity measurements from the Anglo-Australian Planet Search re- veal planetary mass companions to HD23127, HD159868, and a possible second planetary companion to HD154857. These stars are all G dwarfs. The com panions 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 > 4.5MJ, and semimajor axes be tween 1 and > 4.5AU. 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
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