The Pan-Pacific planet search. I. A giant planet orbiting 7 CMa

Wittenmyer, Robert A. and Endl, Michael and Wang, Liang and Johnson, John Asher and Tinney, C. G. and O'Toole, S. J. (2011) The Pan-Pacific planet search. I. A giant planet orbiting 7 CMa. The Astrophysical Journal, 743 (2). ISSN 0004-637X

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Abstract

We introduce the Pan-Pacific Planet Search, a survey of 170 metal-rich Southern Hemisphere subgiants using the 3.9 m Anglo-Australian Telescope. We report the first discovery from this program, a giant planet orbiting 7 CMa (HD 47205) with a period of 763 ± 17 days, eccentricity e = 0.14 ± 0.06, and m sin i = 2.6 ± 0.6MJup. The host star is a K giant with a mass of 1.5 ± 0.3 M⊙ and metallicity [Fe/H] = 0.21 ± 0.10. The mass and period of 7 CMa b are typical of planets which have been found to orbit intermediate-mass stars (M * greater than 1.3 M ⊙). Hipparcos photometry shows this star to be stable to 0.0004 mag on the radial-velocity period, giving confidence that this signal can be attributed to reflex motion caused by an orbiting planet.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Access to Published version allowed due to publisher copyright policy.
Faculty / Department / School: No Faculty
Date Deposited: 19 May 2017 04:54
Last Modified: 27 Sep 2018 02:48
Uncontrolled Keywords: planetary systems; individual stars(HD 47205); techniques - radial velocities;
Fields of Research : 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Identification Number or DOI: 10.1088/0004-637X/743/2/184
URI: http://eprints.usq.edu.au/id/eprint/31778

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