2007A&A...474.1023S


Query : 2007A&A...474.1023S

2007A&A...474.1023S - Astronomy and Astrophysics, volume 474, 1023-1029 (2007/11-2)

Survey of the stability region of hypothetical habitable Trojan planets.

SCHWARZ R., DVORAK R., SUELI A. and ERDI B.

Abstract (from CDS):

In this work we study the dynamical possibility in extrasolar planetary systems that a terrestrial planet can exist in 1:1 mean motion resonance with a Jovian-like planet. We compiled a catalogue of hypothetical habitable Trojan planets, to be able to make a stability forecast for further extrasolar planetary systems discovered in the future. When speaking of habitability we also took the influence of the spectral type of the central star into account. We integrated some 106 orbits of fictitious Trojans around the Lagrangian points for up to 107 orbital periods of the primary bodies and checked the stability of the orbital elements and their chaoticity with the aid of the Lyapunov characteristic indicator and maximum eccentricity. The computations were carried out using the dynamical model of the elliptic, restricted three-body problem that consists of a central star, a gas giant moving in the habitable zone, and a hypothetical (massless) terrestrial planet. Our investigations have shown that 7 exoplanetary systems can harbour habitable Trojan planets with stable orbits (HD93083, HD17051, HD28185, HD27442, HD188015, HD99109, and HD221287, which is a recently discovered system). The comparison of the investigated systems with our catalogue showed matching results, so that we can use the catalogue in practice.

Abstract Copyright:

Journal keyword(s): celestial mechanics - stars: planetary systems - astrobiology

Simbad objects: 13

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Number of rows : 13
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 * iot Hor PM* 02 42 33.4666679022 -50 48 01.055138166   5.97 5.40     F8V 368 1
2 HD 20367 PM* 03 17 40.0468295160 +31 07 37.360398072   6.962 6.399     F8V 126 1
3 HD 23079 PM* 03 39 43.0959995592 -52 54 57.017412036   7.68 7.11     F9.5V 157 1
4 * eps Ret PM* 04 16 29.0281470260 -59 18 07.755891304 6.59 5.52 4.44 3.62 3.08 K2III 226 1
5 HD 28185 PM* 04 26 26.3227063776 -10 33 02.947149108   8.52 7.81     G6.5IV-V 174 1
6 HD 93083 PM* 10 44 20.9150176896 -33 34 37.287898176   9.27 8.33     K2IV-V 99 1
7 HD 99109 PM* 11 24 17.3585400216 -01 31 44.666848380   9.96 9.06     G8/K0IV 98 1
8 HD 101930 PM* 11 43 30.1133767737 -58 00 24.778676929   9.12 8.21     K2V+ 98 1
9 HD 114783 PM* 13 12 43.7855575272 -02 15 54.130663296 9.137 8.469 7.550 7.053 6.627 K1V 178 1
10 * 23 Lib PM* 15 13 28.6669233518 -25 18 33.653388418   7.168 6.46 6.43   G6IV-V 283 1
11 BD-07 4003c Pl 15 19 26.8271336166 -07 43 20.190958776           ~ 105 1
12 HD 188015 PM* 19 52 04.5426976824 +28 06 01.345077360   8.95 8.23     G5IV 86 1
13 HD 221287 PM* 23 31 20.3384562072 -58 12 35.033565312   8.31 7.81     F7V 72 1

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2022.11.28-12:52:37

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