Published in

Oxford University Press, Monthly Notices of the Royal Astronomical Society, 4(337), p. 1170-1178, 2002

DOI: 10.1046/j.1365-8711.2002.05787.x

Links

Tools

Export citation

Search in Google Scholar

Extrasolar planets around HD 196050, HD 216437 and HD 160691

Journal article published in 2002 by Hugh Ra A. Jones ORCID, R. P. Butler, R. Paul Butler, Geoffrey W. Marcy, Chris G. Tinney ORCID, Alan J. Penny, Chris McCarthy, Brad D. Carter ORCID
This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Green circle
Preprint: archiving allowed
Upload
Green circle
Postprint: archiving allowed
Upload
Green circle
Published version: archiving allowed
Upload
Policy details
Data provided by SHERPA/RoMEO

Abstract

We report precise Doppler measurements of the stars HD 216437, HD 196050 and HD 160691 obtained with the Anglo-Australian Telescope using the UCLES spectrometer together with an iodine cell as part of the Anglo-Australian Planet Search. Our measurements reveal periodic Keplerian velocity variations that we interpret as evidence for planets in orbit around these solar type stars. HD 216437 has a period of 1294 ± 250 d, a semi-amplitude of 38 ± 3 m s−1 and an eccentricity of 0.33 ± 0.09. The minimum (M sin i) mass of the companion is 2.1 ± 0.3 MJUP and the semi-major axis is 2.4 ± 0.5 au. HD 196050 has a period of 1300 ± 230 d, a semi-amplitude of 49 ± 8 m s−1 and an eccentricity of 0.19 ± 0.09. The minimum mass of the companion is 2.8 ± 0.5 MJUP and the semi-major axis is 2.4 ± 0.5 au. We also report further observations of the metal-rich planet bearing star HD 160691. Our new solution confirms the previously reported planet and shows a trend indicating a second, longer-period companion. These discoveries add to the growing numbers of mildly eccentric, long-period extrasolar planets around metal-rich Sun-like stars.