Second-generation planet formation after tidal disruption from common envelope evolution

Autor:	Chamandy, Luke, Nordhaus, Jason, Blackman, Eric G., Wilson, Emily
Rok vydání:	2024
Předmět:	Astrophysics - Earth and Planetary Astrophysics Astrophysics - Solar and Stellar Astrophysics
Druh dokumentu:	Working Paper
Popis:	We propose that certain white dwarf (WD) planets, such as WD 1856+534 b, may form out of material from a stellar companion that tidally disrupts from common envelope (CE) evolution with the WD progenitor star. The disrupted companion shreds into an accretion disc, out of which a gas giant protoplanet forms due to gravitational instability. To explore this scenario, we make use of detailed stellar evolution models consistent with WD 1856+534. The minimum mass companion that produces a gravitationally-unstable disk after tidal disruption is $\sim$$0.15\,\mathrm{M}_\odot$. Planet formation from tidal disruption is a new channel for producing second-generation planets around WDs. Comment: 9 pages, 2 figures, 1 table. Submitted to PASA. Comments welcome
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2407.14190 Zobrazit plný text záznamu View this record from Arxiv