2013A&A...556A..78J


Query : 2013A&A...556A..78J

2013A&A...556A..78J - Astronomy and Astrophysics, volume 556A78-78 (2013/8-1)

Study of the impact of the post-MS evolution of the host star on the orbits of close-in planets. II. A giant planet in a close-in orbit around the RGB star HIP 63242.

JONES M.I., JENKINS J.S., ROJO P., MELO C.H.F. and BLUHM P.

Abstract (from CDS):

More than 40 planets have been found around giant stars, revealing a lack of systems orbiting interior to ∼0.6AU. This observational fact contrasts with the planetary population around solar-type stars and has been interpreted as the result of the orbital evolution of planets through the interaction with the host star and/or because of a different formation/migration scenario of planets around more massive stars. We are conducting a radial velocity study of a sample of 166 giant stars aimed at studying the population of close-in planets orbiting post-main sequence stars. We computed precision radial velocities from multi-epoch spectroscopic data to search for planets around giant stars. We present the discovery of a massive planet around the intermediate-mass giant star HIP63242. The best Keplerian fit to the data leads to an orbital distance of 0.57AU, an eccentricity of 0.23 and a projected mass of 9.2MJ. HIP63242b is the innermost planet detected around any intermediate-mass giant star and also the first planet detected in our survey.

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Journal keyword(s): stars: horizontal-branch - planet-star interactions - stars: late-type - planetary systems - stars: individual: HIP 63242

Simbad objects: 4

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Number of rows : 4
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 * tau Cet PM* 01 44 04.0831371922 -15 56 14.927607677 4.43 4.22 3.50 2.88 2.41 G8V 1354 1
2 CD-36 1052 HB* 02 47 37.4429774568 -36 06 27.032483376   10.426 9.982 9.818 9.37 Fwl 79 1
3 HD 112410b Pl 12 57 31.9604549376 -65 38 47.260353084           ~ 5 1
4 HD 112410 RG* 12 57 31.9604549376 -65 38 47.260353084   7.90 6.87     G8III 37 1

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