Main-sequence exoplanet systems: tidal evolution
arxiv(2024)
Abstract
The easiest exoplanets to detect are those that orbit very close to their
hoststars. As a result, even though these planets are quite rare, they
represent amajor fraction of the current exoplanet population. A side-effect of
theproximity between the planet and the star is that the two have strong
mutualinteractions through a number of physical processes. One of the most
importantof these processes is tides. Tides are thought to shape the orbits of
close-inexoplanets, heat the planet making its radius expand, and even drive
someplanets to spiral into their host stars. This chapter briefly introduces
thebasics of tidal physics and describes the various fingerprints tides
leavewithin the observed exoplanet population.
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