Tidally induced stellar oscillations: converting modelled oscillations excited by hot Jupiters into observables

被引：4

作者：

Bunting, Andrew ^{[1
]}

Terquem, Caroline ^{[1
,2
]}

机构：

[1] Univ Oxford, Dept Phys, Keble Rd, Oxford OX1 3RH, England

[2] Sorbonne Univ, Inst Astrophys Paris, CNRS, UMR 7095, 98 Bis Blvd Arago, F-75014 Paris, France

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2021年 / 500卷 / 02期

基金：

英国科学技术设施理事会;

关键词：

asteroseismology; planets and satellites: detection; planet-star interactions; stars: oscillations; SOLAR-TYPE; ASTEROSEISMOLOGY; PLANET; STARS; TIDES; CONFIRMATION; EXCITATION; EXOPLANET; MOTION; PERIOD;

D O I：

10.1093/mnras/staa3394

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the conversion from non-adiabatic, non-radial oscillations tidally induced by a hot Jupiter on a star to observable spectroscopic and photometric signals. Models with both frozen convection and an approximation for a perturbation to the convective flux are discussed. Observables are calculated for some real planetary systems to give specific predictions. The photometric signal is predicted to be proportional to the inverse square of the orbital period, P-2, as in the equilibrium tide approximation. However, the radial velocity signal is predicted to be proportional to P-1, and is therefore much larger at long orbital periods than the signal corresponding to the equilibrium tide approximation, which is proportional to P-3. The prospects for detecting these oscillations and the implications for the detection and characterization of planets are discussed.

引用

页码：2711 / 2731

页数：21

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