SIMBAD references

2017AJ....154..274W - Astron. J., 154, 274-274 (2017/December-4)

The Pan-Pacific Planet Search. VII. The most eccentric planet orbiting a giant star.

WITTENMYER R.A., JONES M.I., HORNER J., KANE S.R., MARSHALL J.P., MUSTILL A.J., JENKINS J.S., ROJAS P.A.P., ZHAO J., VILLAVER E., BUTLER R.P. and CLARK J.

Abstract (from CDS):

Radial velocity observations from three instruments reveal the presence of a 4 MJup planet candidate orbiting the K giant HD 76920. HD 76920b has an orbital eccentricity of 0.856 ± 0.009, making it the most eccentric planet known to orbit an evolved star. There is no indication that HD 76920 has an unseen binary companion, suggesting a scattering event rather than Kozai oscillations as a probable culprit for the observed eccentricity. The candidate planet currently approaches to about four stellar radii from its host star, and is predicted to be engulfed on a ∼100 Myr timescale due to the combined effects of stellar evolution and tidal interactions.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): planetary systems - stars: evolution - stars: individual: HD 76920 - techniques: radial velocities - techniques: radial velocities

Simbad objects: 15

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