2016A&A...589A.124L


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.24CET21:03:34

2016A&A...589A.124L - Astronomy and Astrophysics, volume 589A, 124-124 (2016/5-1)

Close-in planets around giant stars. Lack of hot-Jupiters and prevalence of multiplanetary systems.

LILLO-BOX J., BARRADO D. and CORREIA A.C.M.

Abstract (from CDS):

Extrasolar planets abound in almost any possible configuration. However, until five years ago, there was a lack of planets orbiting closer than 0.5au to giant or subgiant stars. Since then, recent detections have started to populated this regime by confirming 13 planetary systems. We discuss the properties of these systems in terms of their formation and evolution off the main sequence. Interestingly, we find that 70.0±6.6% of the planets in this regime are inner components of multiplanetary systems. This value is 4.2σ higher than for main-sequence hosts, which we find to be 42.4±0.1%. The properties of the known planets seem to indicate that the closest-in planets (a<0.06au) to main-sequence stars are massive (i.e., hot Jupiters) and isolated and that they are subsequently engulfed by their host as it evolves to the red giant branch, leaving only the predominant population of multiplanetary systems in orbits 0.06 <a<0.5au. We discuss the implications of this emerging observational trend in the context of formation and evolution of hot Jupiters.

Abstract Copyright: © ESO, 2016

Journal keyword(s): planets and satellites: gaseous planets - planets and satellites: dynamical evolution and stability - planet-star interactions - planetary systems

Simbad objects: 16

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Number of rows : 16

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HD 11964 PM* 01 57 09.6073695508 -10 14 32.731766141   7.25 6.42     G9VCN+1 158 1
2 HD 38529 PM* 05 46 34.9129896843 +01 10 05.512540812       5.4   G8III/IV 318 2
3 HD 102956 * 11 51 22.5110868941 +57 38 26.642691616   8.825 7.851 8.21   K0III 50 1
4 HD 102956b Pl 11 51 22.5110868941 +57 38 26.642691616           ~ 22 1
5 * 70 Vir PM* 13 28 25.8081883620 +13 46 43.642951116 5.930 5.680 4.970 4.37 3.98 G4Va 679 1
6 HD 121056 RG* 13 53 52.0609887338 -35 18 51.680937317   7.21 6.19     K0III 62 0
7 * 8 UMi * 14 56 48.3536367311 +74 54 03.321251380   7.834 6.835     K0 25 0
8 Kepler-91b Pl 19 02 41.4979092591 +44 07 00.239792240           ~ 64 1
9 Kepler-91 RG* 19 02 41.4979092591 +44 07 00.239792240           K1IV 64 1
10 Kepler-278 * 19 20 25.7274853511 +38 42 08.031014212   12.79 11.81     K2IV 46 0
11 Kepler-391 * 19 22 29.2353360736 +51 03 26.325428590           K0IV 30 0
12 Kepler-368 Ro* 19 27 31.2121612110 +45 23 16.542945583           ~ 29 0
13 Kepler-432 RG* 19 33 07.7292128625 +48 17 09.145380998           ~ 60 0
14 Kepler-56 RG* 19 35 02.0013983772 +41 52 18.691751459           ~ 134 1
15 Kepler-108 ** 19 38 14.2465376625 +46 03 44.121940632           ~ 67 0
16 WASP-47 * 22 04 48.7262032385 -12 01 08.000987005     11.99 11.82   ~ 107 1

    Equat.    Gal    SGal    Ecl

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2021.02.24-21:03:34

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