Orbital relaxation and excitation of planets tidally interacting with white dwarfs
Orbital relaxation and excitation of planets tidally interacting with white dwarfs
复制标题
与白矮星潮汐相互作用的行星的轨道弛豫和激发
DOI:
10.1093/mnras/stz965
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发表时间:
2019
影响因子:
4.8
通讯作者:
Gänsicke
中科院分区:
文献类型:
--
作者:
Efroimsky;Makarov;Wolthoff;Reffert;Quirrenbach;Tremblay;P.-E. ;Gänsicke
Observational evidence of white dwarf planetary systems is dominated by the remains of exo-asteroids through accreted metals, debris discs, and orbiting planetesimals. However, exo-planets in these systems play crucial roles as perturbing agents, and can themselves be perturbed close to the white dwarf Roche radius. Here, we illustrate a procedure for computing the tidal interaction between a white dwarf and a near-spherical solid planet. This method determines the planet’s inward and/or outward drift, and whether the planet will reach the Roche radius and be destroyed. We avoid constant tidal lag formulations and instead employ the self-consistent secular Darwin–Kaula expansions from Boué & Efroimsky , which feature an arbitrary frequency dependence on the quality functions. We adopt wide ranges of dynamic viscosities and spin rates for the planet in order to straddle many possible outcomes, and provide a foundation for the future study of individual systems with known or assumed rheologies. We find that (i) massive Super-Earths are destroyed more readily than minor planets (such as the ones orbiting WD 1145+017 and SDSS J1228+1040), (ii) low-viscosity planets are destroyed more easily than high-viscosity planets, and (iii) the boundary between survival and destruction is likely to be fractal and chaotic.
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DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
P. Williams
通讯作者:
P. Williams
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
P. Williams
通讯作者:
P. Williams
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
R. Alonso;S. Rappaport;H. Deeg;E. Pallé
通讯作者:
E. Pallé
影响因子:
5.3
作者:
Henriquet, Maxime;Avouac, Jean-Philippe;Bills, Bruce G.
通讯作者:
Bills, Bruce G.
影响因子:
1.6
作者:
M. Efroimsky
通讯作者:
M. Efroimsky