Results 81 to 90 of about 1,052,175 (256)

The Architectural Design Rules of Solar Systems based on the New Perspective

, 2009
On the basis of the Lunar Laser Ranging Data released by NASA on the Silver Jubilee Celebration of Man Landing on Moon on 21st July 1969-1994, theoretical formulation of Earth-Moon tidal interaction was carried out and Planetary Satellite Dynamics was ...
A Johnson, AN Halliday, Bijay Kumar Sharma, BK Sharma, C Broeg, C Hellier, CL Cook, D Apes, DD Sasselov, DD Sasselov, DP Rubicam, F Marzari, G Israelian, GA Krasinsky, GA Krasinsky, GE Williams, GH Darwin, GH Darwin, H Tanaka, JE Chambers, JJ Dukla, JJ Lissauer, JP Zahn, KJ Epstein, M Reidemeister, ME Zolansky, N Murray, NC Santos, P Goldreich, RP Nelson, S Ida, S Leschiutta, SN Cuzzi, T Jong de   +33 more
core   +1 more source

SPIN–ORBIT ALIGNMENT OF EXOPLANET SYSTEMS: ENSEMBLE ANALYSIS USING ASTEROSEISMOLOGY [PDF]

, 2016
The angle ψ between a planet’s orbital axis and the spin axis of its parent star is an important diagnostic of planet formation, migration, and tidal evolution.
T. Campante, T. Campante, M. Lund, M. Lund, J. Kuszlewicz, J. Kuszlewicz, G. Davies, G. Davies, W. Chaplin, W. Chaplin, S. Albrecht, J. Winn, J. Winn, T. Bedding, T. Bedding, O. Benomar, O. Benomar, D. Bossini, D. Bossini, R. Handberg, R. Handberg, A. R. G. Santos, A. R. G. Santos, V. V. Eylen, V. V. Eylen, S. Basu, J. Christensen-Dalsgaard, Y. Elsworth, Y. Elsworth, S. Hekker, T. Hirano, Daniel Huber, Daniel Huber, C. Karoff, H. Kjeldsen, M. Lundkvist, Thomas S. H. North, Thomas S. H. North, V. S. Aguirre, D. Stello, D. Stello, T. White, T. White   +42 more
semanticscholar   +1 more source

Initial Thermal States of Super‐Earth Exoplanets and Implications for Early Dynamos

Journal of Geophysical Research: Planets, Volume 130, Issue 2, February 2025.
Abstract The accretion of Earth and the formation of a metallic core released a large amount of primordial heat and may have enabled its evolution into a habitable world. Metal‐silicate segregation likely occurs in super‐Earth exoplanets as well, but its influence on their initial thermal states has not been fully examined.
Nathaniel I. White, Jie Li
wiley   +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

Implications of the TTV-Detection of Close-In Terrestrial Planets Around M Stars for Their Origin and Dynamical Evolution [PDF]

Detection and dynamics of transiting exoplanets, 11, id. 04004 (2011), 2010
It has been shown that an Earth-size planet or a super-Earth, in resonance with a transiting Jupiter-like body in a short-period orbit around an M star, can create detectable TTV signals (Kirste \& Haghighipour, 2011). Given the low masses of M stars and their circumstellar disks, it is expected that such a transiting giant planet to have formed at ...
arxiv   +1 more source

Synergies between Asteroseismology and Exoplanetary Science

, 2017
Over the past decade asteroseismology has become a powerful method to systematically characterize host stars and dynamical architectures of exoplanet systems.
Huber, Daniel
core   +1 more source

Geodynamics of Super‐Earth GJ 486b

Journal of Geophysical Research: Planets, Volume 129, Issue 10, October 2024.
Abstract Many super‐Earths are on very short orbits around their host star and, therefore, more likely to be tidally locked. Because this locking can lead to a strong contrast between the dayside and nightside surface temperatures, these super‐Earths could exhibit mantle convection patterns and tectonics that could differ significantly from those ...
Tobias G. Meier, Dan J. Bower, Tim Lichtenberg, Mark Hammond, Paul J. Tackley, Raymond T. Pierrehumbert, José A. Caballero, Shang‐Min Tsai, Megan Weiner Mansfield, Nicola Tosi, Philipp Baumeister   +10 more
wiley   +1 more source

The Prevalence of Resonance Among Young, Close-in Planets

The Astronomical Journal
Multiple planets undergoing disk migration may be captured into a chain of mean-motion resonances with the innermost planet parked near the disk’s inner edge.
Fei Dai, Max Goldberg, Konstantin Batygin, Jennifer van Saders, Eugene Chiang, Nick Choksi, Rixin Li, Erik A. Petigura, Gregory J. Gilbert, Sarah C. Millholland, Yuan-Zhe Dai, Luke Bouma, Lauren M. Weiss, Joshua N. Winn   +13 more
doaj   +1 more source

Condition for Capture into First-order Mean Motion Resonances and Application to Constraints on Origin of Resonant Systems [PDF]

, 2013
We investigate the condition for capture into first-order mean motion resonances using numerical simulations with a wide range of various parameters. In particular, we focus on deriving the critical migration timescale for capture into the 2:1 resonance; additional numerical experiments for closely spaced resonances (e.g., 3:2) are also performed.
arxiv   +1 more source

Theoretical models of planetary system formation. II. Post-formation evolution [PDF]

, 2015
We extend the results of planetary formation synthesis by computing the long-term evolution of synthetic systems from the clearing of the gas disk into the dynamical evolution phase.
Alibert, Y., Benz, W., Pfyffer, S., Swoboda, D.   +3 more
core   +3 more sources