2019A&A...625A...7P


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.25CET17:10:46

2019A&A...625A...7P - Astronomy and Astrophysics, volume 625A, 7-7 (2019/5-1)

The role of dissipative evolution for three-planet, near-resonant extrasolar systems.

PICHIERRI G., BATYGIN K. and MORBIDELLI A.

Abstract (from CDS):

Early dynamical evolution of close-in planetary systems is shaped by an intricate combination of planetary gravitational interactions, orbital migration, and dissipative effects. While the process of convergent orbital migration is expected to routinely yield resonant planetary systems, previous analyses have shown that the semi-major axes of initially resonant pairs of planets will gradually diverge under the influence of long-term energy damping, producing an overabundance of planetary period ratios in slight excess of exact commensurability. While this feature is clearly evident in the orbital distribution of close-in extrasolar planets, the existing theoretical picture is limited to the specific case of the planetary three-body problem. In this study, we generalise the framework of dissipative divergence of resonant orbits to multi-resonant chains, and apply our results to the current observational census of well-characterised three-planet systems. Focusing on the 2:1 and 3:2 commensurabilities, we identify three three-planet systems, whose current orbital architecture is consistent with an evolutionary history wherein convergent migration first locks the planets into a multi-resonant configuration and subsequent dissipation repels the orbits away from exact commensurability. Nevertheless, we find that the architecture of the overall sample of multi-planetary systems is incompatible with this simple scenario, suggesting that additional physical mechanisms must play a dominant role during the early stages of planetary systems' dynamical evolution.

Abstract Copyright: © G. Pichierri et al. 2019

Journal keyword(s): planets and satellites: dynamical evolution and stability - planets and satellites: formation

Simbad objects: 18

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Number of rows : 18

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* YZ Cet Fl* 01 12 30.6367741360 -16 59 56.361313690 15.315 13.885 12.074 10.696 8.938 M4.0Ve 193 0
2 HD 40307 PM* 05 54 04.2409953924 -60 01 24.491747849 8.814 8.097 7.147 6.597 6.119 K2.5V 196 1
3 HD 40307f Pl 05 54 04.2409953924 -60 01 24.491747849           ~ 8 1
4 HD 40307g Pl 05 54 04.2409953924 -60 01 24.491747849           ~ 21 1
5 K2-239 * 10 42 22.6341758221 +04 26 28.888695990   16.21 14.55 14.14   ~ 5 0
6 KOI-3097 Ro* 18 44 26.9622406084 +43 13 40.039872881   12.85 12.14     F6IV 27 0
7 KOI-2086 Ro* 19 15 50.6983559226 +42 15 54.050526895           ~ 61 1
8 KOI-665 Ro* 19 20 07.3248017927 +42 09 57.757063333           ~ 40 0
9 KOI-829 Ro* 19 21 50.8280173187 +40 33 44.886118602           ~ 51 1
10 KOI-749 Ro* 19 29 30.2722521868 +47 52 51.579554122           ~ 37 0
11 KOI-935 Ro* 19 36 05.5270041046 +45 51 11.106441920           ~ 51 1
12 KOI-156 Ro* 19 36 29.1357730428 +48 20 58.291073923           M0V 49 0
13 KOI-1835 Ro* 19 37 18.1341710571 +46 00 08.054098636           K1V 40 0
14 Kepler-289 Ro* 19 49 51.6736755661 +42 52 58.269661448           ~ 43 0
15 KOI-730 * 19 53 16.4203115605 +47 16 46.308061008     15 15.78   ~ 81 1
16 KOI-1563 Ro* 19 56 53.8364618808 +40 20 35.441839800           ~ 34 0
17 V* FK Aqr BY* 22 38 45.5745793091 -20 37 16.086999376 11.714 10.595 9.083 8.073 6.876 M0Vep 250 0
18 TRAPPIST-1 PM* 23 06 29.3684052886 -05 02 29.031690445     18.798 16.466 14.024 M8 410 0

    Equat.    Gal    SGal    Ecl

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2020.02.25-17:10:46

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