The Pan-Pacific Planet Search. VII. the Most Eccentric Planet Orbiting a Giant Star
Wittenmyer, Robert A. ; Jones, M. I. ; Horner, Jonathan ; Kane, Stephen R. ; Marshall, J. P. ; Mustill, A. J. LU
; Jenkins, J. S.
; Rojas, P. A.Pena
; Zhao, Jinglin
and Villaver, Eva
, et al.
(2017)
In The Astronomical Journal
154(6).
- Abstract
Radial velocity observations from three instruments reveal the presence of a 4 M Jup 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.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/16a2c5a2-c9e6-4031-a936-ff901468dfb7
- author
- Wittenmyer, Robert A.
; Jones, M. I.
; Horner, Jonathan
; Kane, Stephen R.
; Marshall, J. P.
; Mustill, A. J.
LU
; Jenkins, J. S.
; Rojas, P. A.Pena
; Zhao, Jinglin
and Villaver, Eva
, et al. (More)
- Wittenmyer, Robert A.
; Jones, M. I.
; Horner, Jonathan
; Kane, Stephen R.
; Marshall, J. P.
; Mustill, A. J.
LU
; Jenkins, J. S.
; Rojas, P. A.Pena
; Zhao, Jinglin
; Villaver, Eva
; Butler, R. P.
and Clark, Jake
(Less)
- organization
- publishing date
- 2017-12-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- planetary systems, stars: evolution, stars: individual (HD 76920), techniques: radial velocities
- in
- The Astronomical Journal
- volume
- 154
- issue
- 6
- article number
- 274
- publisher
- IOP Publishing
- external identifiers
-
- scopus:85039166921
- ISSN
- 0004-6256
- DOI
- 10.3847/1538-3881/aa9894
- project
- IMPACT: Comets, asteroids and the habitability of planets
- language
- English
- LU publication?
- yes
- id
- 16a2c5a2-c9e6-4031-a936-ff901468dfb7
- alternative location
- https://arxiv.org/abs/1711.05378
- date added to LUP
- 2018-01-08 11:12:24
- date last changed
- 2025-04-04 14:43:48
@article{16a2c5a2-c9e6-4031-a936-ff901468dfb7,
abstract = {{<p>Radial velocity observations from three instruments reveal the presence of a 4 M <sub>Jup</sub> 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.</p>}},
author = {{Wittenmyer, Robert A. and Jones, M. I. and Horner, Jonathan and Kane, Stephen R. and Marshall, J. P. and Mustill, A. J. and Jenkins, J. S. and Rojas, P. A.Pena and Zhao, Jinglin and Villaver, Eva and Butler, R. P. and Clark, Jake}},
issn = {{0004-6256}},
keywords = {{planetary systems; stars: evolution; stars: individual (HD 76920); techniques: radial velocities}},
language = {{eng}},
month = {{12}},
number = {{6}},
publisher = {{IOP Publishing}},
series = {{The Astronomical Journal}},
title = {{The Pan-Pacific Planet Search. VII. the Most Eccentric Planet Orbiting a Giant Star}},
url = {{http://dx.doi.org/10.3847/1538-3881/aa9894}},
doi = {{10.3847/1538-3881/aa9894}},
volume = {{154}},
year = {{2017}},
}