Results 41 to 50 of about 5,562 (188)

The Orbit of Warm Jupiter WASP-106 b is Aligned with its Star

The Astronomical Journal, 2023
Understanding orbital obliquities, or the misalignment angles between a star’s rotation axis and the orbital axis of its planets, is crucial for unraveling the mechanisms of planetary formation and migration.
Jan-Vincent Harre, Alexis M. S. Smith, Teruyuki Hirano, Szilárd Csizmadia, Amaury H. M. J. Triaud, David R. Anderson   +5 more
doaj   +1 more source

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

Ten New and Updated Multi-planet Systems, and a Survey of Exoplanetary Systems [PDF]

, 2009
We present the latest velocities for 10 multi-planet systems, including a re-analysis of archival Keck and Lick data, resulting in improved velocities that supersede our previously published measurements.
Barnes, Barnes, Bean, Bodenheimer, Bouchy, Bryden, Butler, Butler, Butler, Chiang, Cochran, D'Angelo, D. A. Fischer, Desort, Endl, Eric B. Ford, Fischer, Fischer, Fischer, Fischer, Ford, Ford, Ford, G. W. Marcy, Goldreich, Ida, Ida, J. T. Wright, John Asher Johnson, Johnson, Johnson, Knuth, Kokubo, Konacki, Laughlin, Lee, Lee, Levison, Marcy, Marcy, Marzari, Mayor, McArthur, Murray, Niedzielski, Pepe, Raghavan, Rivera, S. Upadhyay, Takeda, Tanaka, Tinney, Valenti, Vogt, Wittenmyer, Wright, Wright   +56 more
core   +2 more sources

Evolution of Terrestrial Planetary Bodies and Implications for Habitability

Reviews of Geophysics, Volume 63, Issue 4, December 2025.
Abstract The terrestrial planetary bodies of our solar system—Mercury, Venus, Earth, and Mars—share a common origin through nebular accretion and early magma ocean differentiation, yet they diverged significantly in geological evolution, tectonic regimes, and habitability.
Peter A. Cawood, Eva E. Stüeken, Priyadarshi Chowdhury, Chris J. Hawkesworth, Jacob A. Mulder   +4 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

A High-Eccentricity Warm Jupiter Orbiting TOI-4127

The Astronomical Journal, 2023
We report the discovery of TOI-4127 b, which is a transiting, Jupiter-sized exoplanet on a long-period ( $P={56.39879}_{-0.00010}^{+0.00010}$ days) and a high-eccentricity orbit around a late F-type dwarf star.
Arvind F. Gupta, Jonathan M. Jackson, Guillaume Hébrard, Andrea S. J. Lin, Keivan G. Stassun, Jiayin Dong, Steven Villanueva Jr., Diana Dragomir, Suvrath Mahadevan, Jason T. Wright, Jose M. Almenara, Cullen H. Blake, Isabelle Boisse, Pía Cortés-Zuleta, Paul A. Dalba, Rodrigo F. Díaz, Eric B. Ford, Thierry Forveille, Robert Gagliano, Samuel Halverson, Neda Heidari, Shubham Kanodia, Flavien Kiefer, David w. Latham, Michael W. McElwain, Ismael Mireles, Claire Moutou, Joshua Pepper, George R. Ricker, Paul Robertson, Arpita Roy, Martin Schlecker, Christian Schwab, S. Seager, Avi Shporer, Guđmundur Stefánsson, Ryan C. Terrien, Eric B. Ting, Joshua N. Winn, Allison Youngblood   +39 more
doaj   +1 more source

Warm Saturns: On the Nature of Rings around Extrasolar Planets that Reside Inside the Ice Line [PDF]

, 2011
We discuss the nature of rings that may exist around extrasolar planets. Taking the general properties of rings around the gas giants in the Solar System, we infer the likely properties of rings around exoplanets that reside inside the ice line.
Barnes, Barnes, Carter, Carter, Chandrasekhar, Chatterjee, Dunham, Fabrycky, Henon, Henon, Hilke E. Schlichting, Hut, Jackson, Laplace, Lin, Murray, Ohta, Philip Chang, Ragozzine, Roche, Schlichting, Seager, Tremaine, Vieira Neto, Winn, Winn, Wright, Wu, Wu   +28 more
core   +2 more sources

Neuromorphic Computing with Memcapacitors: Advancements, Challenges, and Future Directions

Advanced Electronic Materials, Volume 11, Issue 18, November 4, 2025.
Neuromorphic computing reduces energy costs by integrating memory and processing in event‐driven architectures, achieving energy usage as low as 10–30 pJ per operation for memcapacitor‐based synapses. Memcapacitors are reviewed as strong contenders for neuromorphic computing, enhancing AI acceleration through charge‐based computations, high resistance,
Nada AbuHamra, Muhammad Umair Khan, Eman Hassan, Mahmoud Al Qutayri, Baker Mohammad   +4 more
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

Elemental Abundances of Kepler Objects of Interest in APOGEE. I. Two Distinct Orbital Period Regimes Inferred from Host Star Iron Abundances

, 2017
The Apache Point Observatory Galactic Evolution Experiment (APOGEE) has observed $\sim$600 transiting exoplanets and exoplanet candidates from \textit{Kepler} (Kepler Objects of Interest, KOIs), most with $\geq$18 epochs. The combined multi-epoch spectra
Almeida, Andrés, Bender, Chad, Brinkmann, Jonathan, Cunha, Katia, Garciá-Hernández, D. A., Mahadevan, Suvrath, Majewski, Steven R., Prieto, Carlos Allende, Skrutskie, Michael F., Smith, Verne, Souto, Diogo, Stassun, Keivan G., Teske, Johanna, Troup, Nicholas, Wilson, Robert F., Zamora, Olga   +15 more
core   +1 more source