Results 91 to 100 of about 404,312 (236)

Let’s Sweep: The Effect of Evolving J 2 on the Resonant Structure of a Three-planet System

The Astrophysical Journal, 2023
Short and ultrashort period planets are peculiar types of exoplanets with periods as short as a few days or less. Although it is challenging to detect them, already several have been observed, with many additional candidates.
Thea H. Faridani, Smadar Naoz, Gongjie Li, Nicholas Inzunza   +3 more
doaj   +1 more source

Mass-radius relationships for exoplanets

, 2011
For planets other than Earth, interpretation of the composition and structure depends largely on comparing the mass and radius with the composition expected given their distance from the parent star.
Ackland, Adams, Albers, Barnes, Barnes, Barnes, Bastea, Batalha, Bushman, Carter, Charbonneau, Charbonneau, Clerouin, D. C. Swift, D. G. Hicks, E. Schwegler, Fortney, G. J. Ackland, G. W. Collins, Grasset, Henry, Holian, J. H. Eggert, Johnson, Johnson, Johnson, K. Caspersen, Kerley, Kerley, Kittel, Lindl, Luo, Lyon, McQueen, Michielsen, Mulford, N. Nettelmann, Press, S. Hamel, Schneider, Seager, Swift, Swift, van Thiel   +43 more
core   +1 more source

Role of Dynamical Research in the Detection and Characterization of Exoplanets

, 2007
9 pages, White Paper Submitted to the ExoPlanet Task ...
Ford, Eric B., Adams, Fred C., Armitage, Phil, Gaudi, B. Scott, Malhotra, Renu, Holman, Mathew J., Marcy, Geoffrey W., Rasio, Frederic A., Sigurdsson, Steinn   +8 more
openaire   +2 more sources

Spatially resolved spectroscopy across stellar surfaces. I. Using exoplanet transits to analyze 3-D stellar atmospheres

, 2017
CONTEXT: High-precision stellar analyses require hydrodynamic modeling to interpret chemical abundances or oscillation modes. Exoplanet atmosphere studies require stellar background spectra to be known along the transit path while detection of Earth ...
Dahlén, Erik, Dravins, Dainis, Ludwig, Hans-Günter, Pazira, Hiva   +3 more
core   +2 more sources

The barycentric motion of exoplanet host stars: tests of solar spin-orbit coupling

, 2010
Empirical evidence suggests a tantalising but unproven link between various indicators of solar activity and the barycentric motion of the Sun. The latter is exemplified by transitions between regular and more disordered motion modulated by the motions ...
Baliunas, Brown, Butler, Catala, Charbonneau, Charbonneau, Charvátová, Charvátová, Cuntz, Desort, Dittmann, Donati, Eckert, Fairbridge, Fares, Ferris, Hale, Hayes, Javaraiah, Jenkins, Jones, Jose, Juckett, Juckett, Komitov, Landscheidt, Landscheidt, Loeb, M. A. C. Perryman, Nagovitsyn, Niedzielski, Okal, Pepe, Saar, Saar, Saar, Shirley, Shkolnik, Shkolnik, Silva-Valio, Smythe, Sperber, T. Schulze-Hartung, Vogt, Vogt, Weiss, Wilson, Wolf, Wood, Wright, Wright, Zaqarashvili   +51 more
core   +1 more source

A window on exoplanet dynamical histories: Rossiter–McLaughlin observations of WASP-13b and WASP-32b [PDF]

Monthly Notices of the Royal Astronomical Society, 2014
12 pages, 4 Figures, Accepted for publication in ...
Laetitia Delrez, Amaury H. M. J. Triaud, Amaury H. M. J. Triaud, Monika Lendl, Francesca Faedi, E. K. Simpson, Didier Queloz, R. Busuttil, R.D. Brothwell, Richard G. West, Michaël Gillon, François Bouchy, François Bouchy, C. Liebig, D. J. A. Brown, Coel Hellier, A. Collier Cameron, S. C. C. Barros, Francesco Pepe, David J. Armstrong, G. R. M. Miller, J. McCormac, I. Skillen, Christopher A. Watson, A. Fumel, Ulrich Kolb, Damien Ségransan, Joao Bento, Joao Bento, Pierre F. L. Maxted, Peter J. Wheatley, Andrew Norton, Heather M. Cegla, Amanda P. Doyle, Vadim Burwitz, Y. Gómez Maqueo Chew, J. L. Rodriguez, Stéphane Udry, Emmanuel Jehin, J. Bochinski, Carole A. Haswell, Alexandre Santerne, Barry Smalley, E. Hébrard, Guillaume Hébrard, Guillaume Hébrard, Don Pollacco, Keivan G. Stassun, Keivan G. Stassun, David R. Anderson   +49 more
openaire   +6 more sources

Breaking Giant Chains: Early-stage Instabilities in Long-period Giant Planet Systems

The Astrophysical Journal
Orbital evolution is a critical process that sculpts planetary systems, particularly during their early stages where planet–disk interactions are expected to lead to the formation of resonant chains.
Vighnesh Nagpal, Max Goldberg, Konstantin Batygin   +2 more
doaj   +1 more source

The Pressure and Temperature Limits of Likely Rocky Exoplanets [PDF]

, 2019
The interior composition of exoplanets is not observable, limiting our direct knowledge of their structure, composition, and dynamics. Recently described observational trends suggest that rocky exoplanets, that is, planets without significant volatile envelopes, are likely limited to $<$1.5 Earth radii. We show that given this likely upper limit in the
arxiv   +1 more source

Resolving Orbital and Climate Keys of Earth and Extraterrestrial Environments with Dynamics 1.0: A General Circulation Model for Simulating the Climates of Rocky Planets

, 2017
Resolving Orbital and Climate Keys of Earth and Extraterrestrial Environments with Dynamics (ROCKE-3D) is a 3-Dimensional General Circulation Model (GCM) developed at the NASA Goddard Institute for Space Studies for the modeling of atmospheres of Solar ...
Aleinov, Igor, Amundsen, David. S., Chandler, Mark, Clune, Thomas, Del Genio, Anthony D., Fujii, Yuka, Kelley, Maxwell, Kiang, Nancy Y., Sohl, Linda, Tsigaridis, Kostas, Way, M. J.   +10 more
core   +1 more source

Investigating the Origins of Hot Neptunes from Radial Velocity Data

The Astronomical Journal
Hot Neptunes are extrasolar planets that are similar in size to Neptune in our solar system but are much closer to their host stars, completing an orbit in 10 days or less. The origin of hot Neptunes is not fully understood.
Sophie Y. Zheng
doaj   +1 more source