SIMBAD references

2011A&A...535A..50M - Astronomy and Astrophysics, volume 535A, 50-50 (2011/11-1)

A binary merger origin for inflated hot Jupiter planets.


Abstract (from CDS):

We hypothesize that hot Jupiters with inflated sizes represent a separate planet formation channel, the merging of two low-mass stars. We show that the abundance and properties of W UMa stars and low mass detached binaries are consistent with their being possible progenitors. The degree of inflation of the transiting hot Jupiters correlates with their expected spiral-in life time by tidal dissipation, and this could indicate youth if the stellar dissipation parameter Q'* is sufficiently low. Several Jupiter-mass planets can form in the massive compact disk formed in a merger event. Gravitational scattering between them can explain the high incidence of excentric, inclined, and retrograde orbits. If the population of inflated planets is indeed formed by a merger process, their frequency should be much higher around blue stragglers than around T Tauri stars.

Abstract Copyright:

Journal keyword(s): planets and satellites: formation - binaries: eclipsing - planets and satellites: dynamical evolution and stability - blue stragglers - methods: statistical

Simbad objects: 8

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