Low Mass Companions for Five Solar-Type Stars from the Magellan Planet Search Program

Details Low Mass Companions for Five Solar-Type Stars from the Magellan Planet Search Program Low Mass Companions for Five Solar-Type Stars from the Magellan Planet Search Program

2008-10-29

arxiv.org/abs/0810.5348v1

Astrophys.J.693:1424-1430,2009

Astronomy and Astrophysics

Astrophysics

Accepted for publication on ApJ, 26 pages, 10 figures, 7 tables

Scientific paper

10.1088/0004-637X/693/2/1424

We report low mass companions orbiting five Solar-type stars that have emerged from the Magellan precision Doppler velocity survey, with minimum (Msini) masses ranging from 1.2 to 25 Mjup. These nearby target stars range from mildly metal-poor to metal-rich, and appear to have low chromospheric activity. The companions to the brightest two of these stars have previously been reported from the CORALIE survey. Four of these companions (HD 48265-b, HD 143361-b, HD 28185-b, HD 111232-b) are low-mass Jupiter-like planets in eccentric intermediate and long-period orbits. On the other hand, the companion to HD 43848 appears to be a long period brown dwarf in a very eccentric orbit.

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