Tidal dissipation in evolving low-mass and solar-type stars with predictions for planetary orbital decay
Tidal dissipation in evolving low-mass and solar-type stars with predictions for planetary orbital decay
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演化中的低质量恒星和太阳型恒星的潮汐耗散以及对行星轨道衰变的预测
DOI:
10.1093/mnras/staa2405
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发表时间:
2020
影响因子:
4.8
通讯作者:
Barker A
中科院分区:
文献类型:
--
作者:
Barker A
We study tidal dissipation in stars with masses in the range 0.1–1.6 M⊙throughout their evolution, including turbulent effective viscosity acting on equilibrium tides and inertial waves (IWs) in convection zones, and internal gravity waves in radiation zones. We consider a range of stellar evolutionary models and incorporate the frequency-dependent effective viscosity acting on equilibrium tides based on the latest simulations. We compare the tidal flow and dissipation obtained with the conventional equilibrium tide, which is strictly invalid in convection zones, finding that the latter typically overpredicts the dissipation by a factor of 2–3. Dissipation of IWs is computed using a frequency-averaged formalism accounting for realistic stellar structure for the first time, and is the dominant mechanism for binary circularization and synchronization on the main sequence. Dissipation of gravity waves in the radiation zone assumes these waves to be fully damped (e.g. by wave breaking), and is the dominant mechanism for planetary orbital decay. We calculate the critical planetary mass required for wave breaking as a function of stellar mass and age, and show that this mechanism predicts destruction of many hot Jupiters but probably not Earth-mass planets on the main sequence. We apply our results to compute tidal quality factors following stellar evolution, and tidal evolutionary time-scales, for the orbital decay of hot Jupiters, and the spin synchronization and circularization of binary stars. We also provide predictions for shifts in transit arrival times due to tidally driven orbital decay of hot Jupiters that may be detected with NGTS,TESS, orPLATO.
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DOI:
10.1111/j.1365-2966.2009.14694.x
发表时间:
2009
影响因子:
4.8
作者:
Barker A
通讯作者:
Barker A
DOI:
10.1086/427082
发表时间:
2004-12
期刊:
The Astrophysical Journal
影响因子:
--
作者:
S. Meibom;R. Mathieu
通讯作者:
S. Meibom;R. Mathieu
DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
G. Maciejewski;H. Knutson;A. Howard;H. Isaacson;E. Fernández;R. Sisto;C. Migaszewski
通讯作者:
C. Migaszewski
影响因子:
6.5
作者:
A. Astoul;S. Mathis;C. Baruteau;François Gallet;A. Strugarek;K. Augustson;A. Brun;É. Bolmont
通讯作者:
É. Bolmont
DOI:
10.1051/0004-6361/201118160
发表时间:
2012
期刊:
arXiv: Solar and Stellar Astrophysics
影响因子:
--
作者:
F. Remus;F. Remus;S. Mathis;J. Zahn
通讯作者:
J. Zahn