Results 11 to 20 of about 65,635 (192)

Tides on Lava Worlds: Application to Close-in Exoplanets and the Early Earth–Moon System

The Astrophysical Journal
Understanding the physics of planetary magma oceans has been the subject of growing efforts, in light of the increasing abundance of solar system samples and extrasolar surveys.
Mohammad Farhat, Pierre Auclair-Desrotour, Gwenaël Boué, Tim Lichtenberg, Jacques Laskar   +4 more
doaj   +4 more sources

Do tides destabilize Trojan exoplanets?

Icarus, 2022
One outstanding problem in extrasolar planet studies is why no co-orbital exoplanets have been found, despite numerous searches among the many known planetary systems, many of them in other mean-motion resonances. Here we examine the hypothesis that dissipation of energy by tides in Trojan planets is preventing their survival.
Anthony R. Dobrovolskis, Jack J. Lissauer   +1 more
openaire   +2 more sources

exoplanet: Gradient-based probabilistic inference for exoplanet data & other astronomical time series [PDF]

, 2021
What's Changed Adding test and fixing deprecated unit parameters by @dfm in https://github.com/exoplanet-dev/exoplanet/pull/211 Removing old ValueError in Keplerian orbit that should never be hit by @dfm in https://github.com/exoplanet-dev/exoplanet ...
Savel, Arjun, Morris, Brett M., Bouma, Luke G., Luger, Rodrigo, Brandt, Timothy D., Hey, Daniel R., Gilbert, Emily, David, Trevor, Agol, Eric, Savel, Arjun B., Hey, Daniel, Foreman-Mackey, Daniel, Bouma, Luke, Price-Whelan, Adrian, Gordon, Tyler A., Barclay, Thomas, Brandt, Timothy, Morris, Brett, Czekala, Ian, Gilbert, Emily A., David, Trevor J., Dong, Jiayin, Price-Whelan, Adrian M., Hedges, Christina, Gordon, Tyler, Czekala, Ian; id_orcid, Tyler Gordon, Eric Agol, Ian Czekala, Brett Morris, Christina Hedges, Jiayin Dong, Daniel Foreman-Mackey, Emily Gilbert, Daniel Hey, Luke Bouma, Adrian Price-Whelan, Arjun Savel, Thomas Barclay, Trevor David, Timothy Brandt, Rodrigo Luger   +41 more
core   +1 more source

Impact of Tides on the Potential for Exoplanets to Host Exomoons [PDF]

The Astronomical Journal, 2020
Abstract Exomoons may play an important role in determining the habitability of worlds outside of our solar system. They can stabilize conditions, alter the climate by breaking tidal locking with the parent star, drive tidal heating, and perhaps even host life themselves. However, the ability of an exoplanet to sustain an exomoon depends
Tokadjian, Armen, Piro, Anthony
openaire   +2 more sources

The Radial Velocity Signature of Tides Raised in Stars Hosting Exoplanets [PDF]

Monthly Notices of the Royal Astronomical Society, 2011
Close-in, massive exoplanets raise significant tides in their stellar hosts. We compute the radial velocity (RV) signal due to this fluid motion in the equilibrium tide approximation. The predicted radial velocities in the observed sample of exoplanets exceed 1 m/s for 17 systems, with the largest predicted signal being ~30 m/s for WASP-18 b.
Arras, Phil, Burkart, Joshua, Quataert, Eliot, Weinberg, Nevin N.   +3 more
openaire   +5 more sources

Implications of Tides for Life on Exoplanets [PDF]

Astrobiology, 2018
As evident from the nearby examples of Proxima Centauri and TRAPPIST-1, Earth-sized planets in the habitable zone of low-mass stars are common. Here, we focus on such planetary systems and argue that their (oceanic) tides could be more prominent due to stronger tidal forces.
Lingam, Manasvi, Loeb, Abraham
openaire   +3 more sources

exoplanet-dev/exoplanet: exoplanet v0.4.5

, 2021
0.5.0 (2021-05-04) Adds high-level, pure-Theano/Aesara implementation of RegularGridInterpolator to replace compiled version #167 Moves compiled Ops to exoplanet-core making exoplanet a pure-Python package #171 Moves ReboundOp and ReboundOrbit to ...
emilygilbert, Dan Foreman-Mackey, Eric Agol, Christina Hedges, Tom Barclay, Ian Czekala, Luke Bouma, Rodrigo Luger, Adrian Price-Whelan, Timothy D Brandt, Arjun Savel   +10 more
core   +1 more source

DREAM

Astronomy & Astrophysics, 2023
The spin–orbit angle, or obliquity, is a powerful observational marker that allows us to access the dynamical history of exoplanetary systems. For this study, we have examined the distribution of spin–orbit angles for close-in exoplanets and put it in a statistical context of tidal interactions between planets and their host stars.
M. Attia, V. Bourrier, J.-B. Delisle, P. Eggenberger   +3 more
openaire   +2 more sources

Atmospheric Circulation of Tide-Locked Exoplanets

Annual Review of Fluid Mechanics, 2019
Tide-locked planets are planets in which tidal stresses from the host star have spun down the planet's rotation to the point where its length of sidereal day equals its length of year. In a nearly circular orbit, such planets have a permanent dayside and a permanent nightside, leading to extreme heating contrasts.
Pierrehumbert, R, Hammond, M
openaire   +2 more sources

Spin evolution of Earth-sized exoplanets, including atmospheric tides and core–mantle friction [PDF]

International Journal of Astrobiology, 2014
AbstractPlanets with masses between 0.1 and 10 M⊕are believed to host dense atmospheres. These atmospheres can play an important role on the planet's spin evolution, since thermal atmospheric tides, driven by the host star, may counterbalance gravitational tides. In this work, we study the long-term spin evolution of Earth-sized exoplanets.
Cunha, Diana, Correia, Alexandre C.M., Laskar, Jacques   +2 more
openaire   +4 more sources