A planet in a circular orbit with a 6 year period

Carter, Brad D. and Butler, R. Paul and Tinney, C. G. and Jones, Hugh R. A. and Marcy, Geoffrey W. and McCarthy, Chris and Fischer, Debra A. and Penny, Alan J. (2003) A planet in a circular orbit with a 6 year period. The Astrophysical Journal Letters , 593 (1). L43-L46. ISSN 2041-8205

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Abstract

Precision Doppler velocity measurements from the 3.9 m Anglo-Australian Telescope reveal a planet with a 6 yr period orbiting the G5 dwarf HD 70642. The a = 3.3 AU orbit has a low eccentricity (e = 0.1), and the minimum (M sin i) mass of the planet is 2.0MJUP. The host star is metal-rich relative to the Sun, similar to most stars with known planets. The distant and approximately circular orbit of this planet makes it a member of the rarest group to emerge from precision Doppler surveys.

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Item Type:	Article (Commonwealth Reporting Category C)
Refereed:	Yes
Item Status:	Live Archive
Additional Information:	Published version made accessible, in accordance with the copyright policy of the publisher.
Faculty / Department / School:	Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited:	11 Oct 2007 01:17
Last Modified:	12 May 2017 06:00
Uncontrolled Keywords:	planetary systems; HD 70642
Fields of Research :	02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020102 Astronomical and Space Instrumentation 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020108 Planetary Science (excl. Extraterrestrial Geology)
Socio-Economic Objective:	E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Identification Number or DOI:	10.1086/378185
URI:	http://eprints.usq.edu.au/id/eprint/2957

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