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).
global dynamics
terrestrial planets
Habitability
predicting
Orbital dynamics
zones
Terrestrial exoplanets
planets
motion
extra-solar planets
orbits
stability limits
double stars
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
Eötvös Loránd University (ELTE)
Institut fur Astronomie, Vienna
B. Funk
Eötvös Loránd University (ELTE)
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 (UAM)
M. Fridlund
European Space Research and Technology Centre (ESA ESTEC)
T. Henning
Max-Planck-Gesellschaft
T. Herbst
Max-Planck-Gesellschaft
L. Kaltenegger
Harvard-Smithsonian Center for Astrophysics
H. Lammer
Institut fur Weltraumforschung
A. Leger
Université Paris-Sud
René Liseau
Chalmers, Institutionen för radio- och rymdvetenskap, Radioastronomi och astrofysik
J. Lunine
University of Arizona
F. Paresce
Istituto nazionale di astrofisica (INAF)
A. Penny
STFC Rutherford Appleton Laboratory
A. Quirrenbach
Landessternwarte Heidelberg-Königstuhl
H. Rottgering
Universiteit Leiden
F. Selsis
Université de Bordeaux
J. Schneider
Observatoire de Paris-Meudon
D. Stam
Netherlands Institute for Space Research (SRON)
G. Tinetti
University College London (UCL)
G. J. White
STFC Rutherford Appleton Laboratory
Open University
Astrobiology
1531-1074 (ISSN)
Vol. 10 1 33-43Ämneskategorier
Astronomi, astrofysik och kosmologi
Fundament
Grundläggande vetenskaper
DOI
10.1089/ast.2009.0379