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- W3159951962 abstract "ABSTRACT Of the 21 known gaseous debris discs around white dwarfs, a large fraction of them display observational features that are well described by an eccentric distribution of gas. In the absence of embedded objects or additional forces, these discs should not remain eccentric for long time-scales, and should instead circularize due to viscous spreading. The metal pollution and infrared excess we observe from these stars is consistent with the presence of tidally disrupted sub-stellar bodies. We demonstrate, using smoothed particle hydrodynamics, that a sublimating or partially disrupting planet on an eccentric orbit around a white dwarf will form and maintain a gas disc with an eccentricity within 0.1 of, and lower than, that of the orbiting body. We also demonstrate that the eccentric gas disc observed around the white dwarf SDSS J1228 + 1040 can be explained by the same hypothesis." @default.
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- W3159951962 date "2021-05-05" @default.
- W3159951962 modified "2023-10-16" @default.
- W3159951962 title "Formation of eccentric gas discs from sublimating or partially disrupted asteroids orbiting white dwarfs" @default.
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- W3159951962 doi "https://doi.org/10.1093/mnrasl/slab043" @default.
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