2017AJ....154..274W

Query : 2017AJ....154..274W

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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Number of rows : 15
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 TYC 3667-1280-1 RG* 00 51 32.9670729672 +58 25 34.246817040   10.86 9.86     ~ 24 0
2 HD 20782b Pl 03 20 03.5777546706 -28 51 14.660358176           ~ 76 1
3 HD 29399 PM* 04 33 33.9493392408 -62 49 25.236915132   6.822 5.780     K1III 59 0
4 HD 37605b Pl 05 40 01.7283246192 +06 03 38.072512008           ~ 42 1
5 HD 45350b Pl 06 28 45.7110772080 +38 57 46.666538028           ~ 37 1
6 * pi.02 UMa b Pl 08 40 12.8171670288 +64 19 40.570243212           ~ 22 1
7 HD 76920 * 08 55 16.8171911352 -67 15 55.700929728   8.93 7.82     K1III 28 0
8 HD 76920b Pl 08 55 16.8171911352 -67 15 55.700929728           ~ 13 0
9 HD 80606b Pl 09 22 37.5768032712 +50 36 13.435326684           ~ 369 1
10 HD 86950 * 10 01 37.6088950560 -17 19 58.889670096   8.55 7.46     K1III 29 0
11 * iot Dra V* 15 24 55.7738042889 +58 57 57.837111857 5.68 4.45 3.29 2.51 1.91 K2III 428 1
12 * iot Dra b Pl 15 24 55.7746265 +58 57 57.834445           ~ 59 1
13 Kepler-91 RG* 19 02 41.4978337152 +44 07 00.239709792           K1IV 114 1
14 * 51 Peg PM* 22 57 27.9804852576 +20 46 07.797040104 6.39 6.16 5.46 4.97 4.61 G2IV 1216 1
15 * 51 Peg b Pl 22 57 27.9804852576 +20 46 07.797040104           ~ 744 1

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