Dynamical Habitability of Planetary Systems
Artikel i vetenskaplig tidskrift, 2010

The problem of the stability of planetary systems, a question that concerns only multiplanetary systems that host at least two planets, is discussed. The problem of mean motion resonances is addressed prior to discussion of the dynamical structure of the more than 350 known planets. The difference with regard to our own Solar System with eight planets on low eccentricity is evident in that 60% of the known extrasolar planets have orbits with eccentricity e > 0.2. We theoretically highlight the studies concerning possible terrestrial planets in systems with a Jupiter-like planet. We emphasize that an orbit of a particular nature only will keep a planet within the habitable zone around a host star with respect to the semimajor axis and its eccentricity. In addition, some results are given for individual systems (e.g., Gl777A) with regard to the stability of orbits within habitable zones. We also review what is known about the orbits of planets in double-star systems around only one component ( e. g., gamma Cephei) and around both stars (e.g., eclipsing binaries).

Habitability

planets

double stars

Terrestrial exoplanets

stability limits

extra-solar planets

motion

predicting

orbits

global dynamics

zones

terrestrial planets

Orbital dynamics

apsidal resonance

Författare

R. Dvorak

Institut fur Astronomie, Vienna

E. Pilat-Lohinger

Institut fur Astronomie, Vienna

E. Bois

Observatoire de la Cote d'Azur

R. Schwarz

Institut fur Astronomie, Vienna

Eötvös Loránd University

B. Funk

Eötvös Loránd University

Institut fur Astronomie, Vienna

C. Beichman

Jet Propulsion Laboratory, California Institute of Technology

W. Danchi

NASA Goddard Space Flight Center

C. Eiroa

Universidad Autonoma de Madrid

M. Fridlund

ESTEC - European Space Research and Technology Centre

T. Henning

Max Planck-institutet

T. Herbst

Max Planck-institutet

L. Kaltenegger

Harvard-Smithsonian Center for Astrophysics

H. Lammer

Institut fur Weltraumforschung

A. Leger

Universite Paris-Sud XI

René Liseau

Chalmers, Institutionen för radio- och rymdvetenskap, Radioastronomi och astrofysik

J. Lunine

University of Arizona

F. Paresce

Istituto Nazionale Di Astrofisica, Rome

A. Penny

Rutherford Appleton Laboratory

A. Quirrenbach

Landessternwarte Heidelberg

H. Rottgering

Leiden Observatory Research Institute

F. Selsis

Universite de Bordeaux

J. Schneider

Observatoire de Paris-Meudon

D. Stam

SRON Netherlands Institute for Space Research

G. Tinetti

UCL

G. J. White

Rutherford Appleton Laboratory

Open University

Astrobiology

1531-1074 (ISSN)

Vol. 10 33-43

Ämneskategorier

Astronomi, astrofysik och kosmologi

Fundament

Grundläggande vetenskaper

DOI

10.1089/ast.2009.0379