Results 1 to 10 of about 1,322 (222)
Convective dynamics in mantle of tidally-locked exoplanets. [PDF]
Nat CommunAbstract Tidal locking imposes distinctive thermal forcing on super-Earth exoplanets in habitable zones, i.e., permanent stellar flux forces extraordinary day-night temperature contrast. However, it may be premature to conclude that life is absent in such supposedly harsh environments—flaming hot on dayside and freezing cold on nightside—when
Noto D +4 more
europepmc +3 more sources
Exploring exoplanet dynamics with JWST: Tides, rotation, rings, and moons. [PDF]
Proc Natl Acad Sci U S AAlthough nearly 6,000 exoplanets are currently known, in most cases, our knowledge is limited to a handful of the planet’s orbital characteristics and bulk properties such as radius and mass. The James Webb Space Telescope (JWST) can expand our knowledge not only by probing exoplanet atmospheres but also by measuring additional orbital and physical ...
Millholland SC, Winn JN.
europepmc +4 more sources
Evolution of Planetary Obliquity: The Eccentric Kozai–Lidov Mechanism Coupled with Tide
The Astrophysical Journal, 2023 Planetary obliquity plays a significant role in determining the physical properties of planetary surfaces and climate. As direct detection is constrained due to the present observation accuracy, kinetic theories are helpful for predicting the evolution ...
Xiumin Huang +4 more
doaj +1 more source
Dynamical Constraints on Exoplanets [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractDynamical studies of new exoplanet systems are a critical component of the discovery and characterisation process. Such studies can provide firmer constraints on the parameters of the newly discovered planets, and may even reveal that the proposed planets do not stand up to dynamical scrutiny.
Horner, Jonti +4 more
openaire +2 more sources
Impact of Lorentz Violation Models on Exoplanets’ Dynamics
Universe, 2022 Many exoplanets have been detected by the radial velocity method, according to which the motion of a binary system around its center of mass can produce a periodical variation of the Doppler effect of the light emitted by the host star. These variations are influenced by both Newtonian and non-Newtonian perturbations to the dominant inverse-square ...
Antonio Gallerati +2 more
openaire +3 more sources
The Sensitivity of Eclipse Mapping to Planetary Rotation
The Astronomical Journal, 2022 Mapping exoplanets across phases and during secondary eclipse is a powerful technique for characterizing Hot Jupiters in emission. Since these planets are expected to rotate about axes normal to their orbital planes, with rotation periods synchronized ...
Arthur D. Adams, Emily Rauscher
doaj +1 more source
DYNAMICS AND TRANSIT VARIATIONS OF RESONANT EXOPLANETS [PDF]
The Astrophysical Journal, 2016 ABSTRACT Transit timing variations (TTVs) are deviations of the measured midtransit times from the exact periodicity. One of the most interesting causes of TTVs is the gravitational interaction between planets. Here we consider a case of two planets in a mean motion resonance (orbital periods in a ratio of small integers).
Nesvorny, D., Vokrouhlicky, D.
openaire +2 more sources
DYNAMICAL MEASUREMENTS OF THE INTERIOR STRUCTURE OF EXOPLANETS [PDF]
The Astrophysical Journal, 2013 Giant gaseous planets often reside on orbits in sufficient proximity to their host stars for the planetary quadrupole gravitational field to become non-negligible. In presence of an additional planetary companion, a precise characterization of the system's orbital state can yield meaningful constraints on the transiting planet's interior structure ...
Becker, Juliette C., Batygin, Konstantin
openaire +3 more sources
The Astronomical Journal, 2023 We present a validation of a long-period ( ${91.68278}_{-0.00041}^{+0.00032}$ days) transiting sub-Neptune planet, TOI-1221 b (TIC 349095149.01), around a Sun-like ( m _V = 10.5) star.
Christopher Mann +27 more
doaj +1 more source
Atmospheric Dynamics of Hot Exoplanets [PDF]
Annual Review of Earth and Planetary Sciences, 2015 The characterization of exoplanetary atmospheres has come of age in the past decade, as astronomical techniques now allow for albedos, chemical abundances, temperature profiles and maps, rotation periods, and even wind speeds to be measured. Atmospheric dynamics sets the background state of density, temperature, and velocity that determines or ...
Heng, Kevin, Showman, Adam
openaire +4 more sources