In:
Publications of the Astronomical Society of Japan, Oxford University Press (OUP), Vol. 66, No. 6 ( 2014-12-01)
Abstract:
We report on the detection of a substellar companion orbiting an evolved intermediate-mass (M⋆ = 2.4 M⊙) star HD 14067 (G9 III) using a precise Doppler technique. Either a periodic Keplerian variation with a decreasing linear velocity trend (P = 1455 d, K1 = 92.2 m s−1, e = 0.533, and $\dot {\gamma } = -22.4\:$m s−1 yr−1) or a single Keplerian orbit without linear trend (P = 2850 d, K1 = 100.1 m s−1, and e = 0.697) can be well fitted to the radial velocities of this star. The minimum mass (m2 sin i = 7.8 MJ for the model with a linear trend, or m2 sin i = 9.0 MJ for the model without a linear trend) suggests a long-period giant planet orbiting an evolved intermediate-mass star. The eccentricity of the orbit is among the highest ones ever detected for planets moving around evolved stars.
Type of Medium:
Online Resource
ISSN:
2053-051X
,
0004-6264
Language:
English
Publisher:
Oxford University Press (OUP)
Publication Date:
2014
detail.hit.zdb_id:
2083084-1
detail.hit.zdb_id:
282483-8
SSG:
16,12