The HARPS search for southern extrasolar planets. XXIII. 8 planetary companions to low-activity solar-type stars

Details The HARPS search for southern extrasolar planets. XXIII. 8 planetary companions to low-activity solar-type stars The HARPS search for southern extrasolar planets. XXIII. 8 planetary companions to low-activity solar-type stars

2010-08-26

arxiv.org/abs/1008.4600v1

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

8 pages, 2 figures, accepted for publication in A&A

Scientific paper

In this paper, we present our HARPS radial-velocity data for eight low-activity solar-type stars belonging to the HARPS volume-limited sample: HD6718, HD8535, HD28254, HD290327, HD43197, HD44219, HD148156, and HD156411. Keplerian fits to these data reveal the presence of low-mass companions around these targets. With minimum masses ranging from 0.58 to 2.54 MJup, these companions are in the planetary mass domain. The orbital periods of these planets range from slightly less than one to almost seven years. The eight orbits presented in this paper exhibit a wide variety of eccentricities: from 0.08 to above 0.8.

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