... (=HZ)[*]
Roughly speaking this is the zone where water can be in a liquid state, Kasting (1993). The problem of habitable regions around a host star, which is still somewhat in contradiction, will not be discussed. It depends on the dynamical parameters of the orbits of a planet there, but also on the spectral type and the age of the host star (e.g. Lammer et al. 2003).
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
... Trojan[*]
Trojans are two groups of asteroids that move close to the equilateral equilibrium points (Lagrange points L4 and L5) formed by the Sun, Jupiter and the asteroid. Consequently the Jupiter Trojans are moving either close to $60^{\circ}$ ahead or $60^{\circ}$ behind Jupiter with the same semimajor axis as the planet.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
... Schneider[*]
http://exoplanet.eu/
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
... Lie-integration[*]
A high order integration method with an automatic step-size control.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
... planets[*]
50 percent larger to take into account the influence of the inclination of the orbits with respect to the line of sight of the observations.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
...$\omega$[*]
The mean anomaly of the planet and the fictitious Trojan planet was always set to 0. This choice of initial conditions ensures that for $\omega = 0$ the star - the inner planet - and the Trojan form an equilateral triangle.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
... 9)[*]
These additional computations were undertaken according to a proposition of the referee to take into consideration the possible inclination of the orbits.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Copyright ESO 2007