Results 11 to 20 of about 8,820 (196)

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   +3 more sources

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

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

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

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

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

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

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

Exoplanet albedo spectra and colors as a function of planet phase, separation, and metallicity [PDF]

, 2010
First generation optical coronagraphic telescopes will obtain images of cool gas and ice giant exoplanets around nearby stars. The albedo spectra of exoplanets at planet-star separations larger than about 1 AU are dominated by reflected light to beyond 1
Ackerman, Alibert, Beichman, Boss, Brown, Burrows, Burrows, Burrows, Chapman, Chapman, Conrath, Dlugach, Dodson-Robinson, Dyudina, Fortney, Fortney, Fortney, Fortney, Fortney, Fortney, Freedman, Gautier, Gautier, Guillot, Guillot, Guyon, Ida, Jonathan J. Fortney, Kasdin, Kerri L. Cahoy, Kratter, Kuchner, Lafreniere, Liou, Lodders, Lodders, Lodders, Mark S. Marley, Marley, Marley, Marley, Marley, Marois, Mawet, Mihilas, Rauscher, Saumon, Saumon, Seager, Sobolev, Spiegel, Stephens, Sudarsky, Sudarsky, Sudarsky, Traub, Veras, West, Zahnle   +58 more
core   +2 more sources

Radial velocity eclipse mapping of exoplanets [PDF]

, 2015
Planetary rotation rates and obliquities provide information regarding the history of planet formation, but have not yet been measured for evolved extrasolar planets.
Barnes J. W., Correia A. C. M., Cowan N. B., Cox A. N., de Pater I., Faure G., Felix Sainsbury-Martinez, Fujii Y., Guillot T., Heller R., Hirano T., Hui L., Kataria T., Kawahara H., Kawahara H., Mandel K., Markwardt C. B., Murray C. D, Nikolay Nikolov, Ohta Y., Pallé E., Paz-Chinchón F., Seager S., Winn J. N.   +23 more
core   +2 more sources