SIMBAD references

2004ApJ...614..955M - Astrophys. J., 614, 955-959 (2004/October-3)

On the survival of short-period terrestrial planets.


Abstract (from CDS):

The currently feasible method of detecting Earth-mass planets is transit photometry, with detection probability decreasing with a planet's distance from the star. The existence or otherwise of short-period terrestrial planets will tell us much about the planet-formation process, and such planets are likely to be detected first, if they exist. Tidal forces are intense for short-period planets and result in decay of the orbit on a timescale that depends on properties of the star as long as the orbit is circular. However, if an eccentric companion planet exists, orbital eccentricity (ei, where i is the inner orbit) is induced, and the decay timescale depends on properties of the short-period planet, reduced by a factor of the order of 105e2i if it is terrestrial. Here we examine the influence companion planets have on the tidal and dynamical evolution of short-period planets with terrestrial structure, and we show that the relativistic potential of the star is fundamental to their survival.

Abstract Copyright:

Journal keyword(s): Celestial Mechanics - Stars: Planetary Systems - Relativity - Stars: Late-Type - Stars: Low-Mass, Brown Dwarfs

Simbad objects: 4

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