Results 1 to 10 of about 8,751 (213)

Exploring exoplanet dynamics with JWST: Tides, rotation, rings, and moons. [PDF]

Proc Natl Acad Sci U S A
Although 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

Convective dynamics in mantle of tidally-locked exoplanets. [PDF]

Nat Commun
Abstract 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, Miyagoshi T, Terada T, Yanagisawa T, Tasaka Y.   +4 more
europepmc   +2 more sources

Evidence for Low-level Dynamical Excitation in Near-resonant Exoplanet Systems

The Astronomical Journal, 2023
The geometries of near-resonant planetary systems offer a relatively pristine window into the initial conditions of exoplanet systems. Given that near-resonant systems have likely experienced minimal dynamical disruptions, the spin–orbit orientations of ...
Malena Rice, Xian-Yu Wang, Songhu Wang, Avi Shporer, Khalid Barkaoui, Rafael Brahm, Karen A. Collins, Andrés Jordán, Nataliea Lowson, R. Paul Butler, Jeffrey D. Crane, Stephen Shectman, Johanna K. Teske, David Osip, Kevin I. Collins, Felipe Murgas, Gavin Boyle, Francisco J. Pozuelos, Mathilde Timmermans, Emmanuel Jehin, Michaël Gillon   +20 more
doaj   +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, Jianghui Ji, Shangfei Liu, Ruobing Dong, Su Wang   +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, Wittenmyer, Robert A., Tinney, Chris, Hinse, Tobias C., Marshall, Jonathan P.   +4 more
openaire   +2 more sources

Workshop Summary: Exoplanet Orbits and Dynamics

Publications of the Astronomical Society of the Pacific, 2023
Abstract Exoplanetary systems show a wide variety of architectures, which can be explained by different formation and dynamical evolution processes. Precise orbital monitoring is mandatory to accurately constrain their orbital and dynamical parameters.
Maire, Anne-Lise, Delrez, Laetitia, Pozuelos, Francisco J., Becker, Juliette, Espinoza, Nestor, Lillo-Box, Jorge, Revol, Alexandre, Absil, Olivier, Agol, Eric, Almenara, José M., Anglada-Escudé, Guillem, Beust, Hervé, Blunt, Sarah, Bolmont, Emeline, Bonavita, Mariangela, Brandner, Wolfgang, Mirek Brandt, G., Brandt, Timothy D., Brown, Garett, Cantero Mitjans, Carles, Charalambous, Carolina, Chauvin, Gaël, Correia, Alexandre C. M., Cranmer, Miles, Defrere, Denis, Deleuil, Magali, Demory, Brice-Olivier, De Rosa, Robert J., Desidera, Silvano, Dévora-Pajares, Martín, Díaz, Rodrigo F., Do Ó, Clarissa, Ducrot, Elsa, Dupuy, Trent J., Ferrer-Chávez, Rodrigo, Fontanive, Clémence, Gillon, Michaël, Giuppone, Cristian, Gkouvelis, Leonardos, de Oliveira Gomes, Gabriel, Gomes, Sérgio R. A., Günther, Maximilian N., Hadden, Sam, Han, Yinuo, Hernandez, David M., Jehin, Emmanuel, Kane, Stephen R., Kervella, Pierre, Kiefer, Flavien, Konopacky, Quinn M., Langlois, Maud, Lanssens, Benjamin, Lazzoni, Cecilia, Lendl, Monika, Li, Yiting, Libert, Anne-Sophie, Lovos, Flavia, Miculán, Romina G., Murray, Zachary, Pallé, Enric, Rein, Hanno, Rodet, Laetitia, Roisin, Arnaud, Sahlmann, Johannes, Siverd, Robert, Stalport, Manu, Carlos Suárez, Juan, Tamayo, Daniel, Teyssandier, Jean, Thuillier, Antoine, Timmermans, Mathilde, Triaud, Amaury H. M. J., Trifonov, Trifon, Valente, Ema F. S., Van Grootel, Valérie, Vasist, Malavika Vijayendra, Wang, Jason J., Wyatt, Mark C., Xuan, Jerry, Young, Steven, Zimmerman, Neil T.   +80 more
openaire   +4 more sources

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 P.
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, Matteo Luca Ruggiero, Lorenzo Iorio   +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