%0 Generic %1 Rasio1996 %A Rasio, F. A. %A Tout, C. A. %A Lubow, S. H. %A Livio, M. %D 1996 %K close decay orbits planetary tidal %T Tidal Decay of Close Planetary Orbits %U http://arxiv.org/abs/astro-ph/9605059 %X The 4.2-day orbit of the newly discovered planet around 51~Pegasi is formally unstable to tidal dissipation. However, the orbital decay time in this system is longer than the main-sequence lifetime of the central star. Given our best current understanding of tidal interactions, a planet of Jupiter's mass around a solar-like star could have dynamically survived in an orbit with a period as short as $\sim10\,$hr. Since radial velocities increase with decreasing period, we would expect to find those planets close to the tidal limit first and, unless this is a very unusual system, we would expect to find many more. We also consider the tidal stability of planets around more evolved stars and we re-examine in particular the question of whether the Earth can dynamically survive the red-giant phase in the evolution of the Sun.

@misc{Rasio1996, abstract = { The 4.2-day orbit of the newly discovered planet around 51~Pegasi is formally unstable to tidal dissipation. However, the orbital decay time in this system is longer than the main-sequence lifetime of the central star. Given our best current understanding of tidal interactions, a planet of Jupiter's mass around a solar-like star could have dynamically survived in an orbit with a period as short as $\sim10\,$hr. Since radial velocities increase with decreasing period, we would expect to find those planets close to the tidal limit first and, unless this is a very unusual system, we would expect to find many more. We also consider the tidal stability of planets around more evolved stars and we re-examine in particular the question of whether the Earth can dynamically survive the red-giant phase in the evolution of the Sun. }, added-at = {2010-06-06T23:23:28.000+0200}, author = {Rasio, F. A. and Tout, C. A. and Lubow, S. H. and Livio, M.}, biburl = {https://www.bibsonomy.org/bibtex/29e8515608bf283ad645bb5428adda7dd/jfowl}, description = {[astro-ph/9605059] Tidal Decay of Close Planetary Orbits}, interhash = {4bf29b13fbf792d9892eb9aa759412f7}, intrahash = {9e8515608bf283ad645bb5428adda7dd}, keywords = {close decay orbits planetary tidal}, note = {cite arxiv:astro-ph/9605059 Comment: AAS LaTeX macros v.4, 14 pages, 2 postscript figures, also available from http://ensor.mit.edu/~rasio/, to appear in ApJ}, timestamp = {2010-06-06T23:23:28.000+0200}, title = {Tidal Decay of Close Planetary Orbits}, url = {http://arxiv.org/abs/astro-ph/9605059}, year = 1996 }