Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21534903t&link_type=abstract
American Astronomical Society, AAS Meeting #215, #349.03; Bulletin of the American Astronomical Society, Vol. 42, p.531
Astronomy and Astrophysics
Astronomy
Scientific paper
Tidal migration and subsequent planet destruction liberates enough energy to be observed as an increase in luminosity of the star, unless it is released very slowly. Many of the planets with the smallest semi-major axes get destroyed by tidally migrating, or "falling", into their stars. This has been shown by recent work that considers the effect of tides induced on the star. The orbital energies of the most massive planets is equal to tens of thousands of years of stellar luminosity. I propose studying the effects of this energy input into the star since work has focused on tidal heating of the planet. We predict this much energy input will produce identifiable signatures in the star's photometric light curve. We advocate theoretical preparation to search for stars made more luminous by the energy of planet infall. We study how common it may be to find light curves of planet hosting stars brightened by migration or subsequent destruction.
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