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- W1966356593 endingPage "1058" @default.
- W1966356593 startingPage "1049" @default.
- W1966356593 abstract "Although 25–50 per cent of white dwarfs (WDs) display evidence for remnant planetary systems, their orbital architectures and overall sizes remain unknown. Vibrant close-in (≃1 R⊙) circumstellar activity is detected at WDs spanning many Gyr in age, suggestive of planets further away. Here we demonstrate how systems with 4 and 10 closely packed planets that remain stable and ordered on the main sequence can become unpacked when the star evolves into a WD and experience pervasive inward planetary incursions throughout WD cooling. Our full-lifetime simulations run for the age of the Universe and adopt main-sequence stellar masses of 1.5, 2.0 and 2.5 M⊙, which correspond to the mass range occupied by the progenitors of typical present-day WDs. These results provide (i) a natural way to generate an ever-changing dynamical architecture in post-main-sequence planetary systems, (ii) an avenue for planets to achieve temporary close-in orbits that are potentially detectable by transit photometry and (iii) a dynamical explanation for how residual asteroids might pollute particularly old WDs." @default.
- W1966356593 created "2016-06-24" @default.
- W1966356593 creator A5008897132 @default.
- W1966356593 creator A5031123948 @default.
- W1966356593 date "2014-12-19" @default.
- W1966356593 modified "2023-09-27" @default.
- W1966356593 title "Detectable close-in planets around white dwarfs through late unpacking" @default.
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