Results 81 to 90 of about 8,194 (235)

Formation of Ultra-short-period Planets in Hot Jupiter Systems: Application to WASP-47

The Astrophysical Journal Letters
The WASP-47 system is notable as the first known system hosting both inner and outer low-mass planetary companions around a hot Jupiter, with an ultra-short-period (USP) planet as the innermost planetary companion.
Su Wang, Mengrui Pan, Yao Dong, Gang Zhao, Jianghui Ji   +4 more
doaj   +1 more source

Long‐Lasting Volcanism of the Moon Aided by the Switch in Dominant Mechanisms of Magma Ascent: Role of Localized Radioactive Enrichment in a Numerical Model of Magmatism and Mantle Convection

Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract Significant volcanic activity continued for billions of years since 3.5–4 Gyr ago in the Procellarum KREEP Terrane (PKT) of the Moon, but not so significant outside the PKT. To understand this volcanic history, we developed a 2‐D numerical model of magmatism and mantle convection; the effects of the PKT on lunar evolution are considered by ...
Ken'yo U, Masanori Kameyama, Gaku Nishiyama, Takehiro Miyagoshi, Masaki Ogawa   +4 more
wiley   +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   +5 more sources

Boundary Layers of Circumplanetary Disks around Spinning Planets. I. Effects of Rossby Waves

The Astrophysical Journal, 2023
Gas giant planets are believed to accrete from their circumplanetary disks (CPDs). The CPDs usually involve accretion through the boundary layer (BL) in the vicinity of planets. Prior studies have concentrated on the BL of nonspinning planets.
Zhihao Fu, Shunquan Huang, Cong Yu
doaj   +1 more source

The role of boundary‐layer friction in modulating midlatitude heatwaves

Quarterly Journal of the Royal Meteorological Society, Volume 151, Issue 768, April 2025 Part A.
Boundary‐layer friction associated with different surface types plays an important role in modulating heatwaves in the midlatitudes. The main changes in heatwave features occur when locally modifying boundary‐layer friction along the jet‐stream axis. Real‐world differences in the occurrence of heatwaves between different locations in the midlatitudes ...
E. Russo, W. Wicker, D. Folini, D. I. V. Domeisen   +3 more
wiley   +1 more source

Thermophysical States of MgSiO3 Liquid up to Terapascal Pressures: Implications for Magma Oceans in Super‐Earths and Sub‐Neptunes

Journal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.
Abstract Thermophysical properties of silicate liquids under extreme conditions are critical for understanding the accretion and evolution of super‐Earths and sub‐Neptunes. The thermal equation of state and viscosity of silicate liquids determine the adiabatic profiles and dynamics of magma oceans. However, these properties are challenging to constrain
Haiyang Luo, Jie Deng
wiley   +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

DYNAMICAL EVOLUTION AND SPIN-ORBIT RESONANCES OF POTENTIALLY HABITABLE EXOPLANETS. THE CASE OF GJ 667C [PDF]

The Astrophysical Journal, 2012
ABSTRACT We investigate the spin-orbital evolution of the potentially habitable super-Earth GJ 667Cc in the multiple system of at least two exoplanets orbiting a nearby M dwarf. The published radial velocities for this star are re-analyzed and evidence is found for additional periodic signals, which could be taken for two additional ...
Valeri V. Makarov, C. T. Berghea, Michael Efroimsky   +2 more
openaire   +5 more sources

Amplifying Resonant Repulsion with Inflated Young Planets, Overlooked Inner Planets, and Nonzero Initial Δ

The Astrophysical Journal
Most multiplanet systems around mature (∼5 Gyr old) host stars are nonresonant. Even the near-resonant planet pairs still display 1%–2% positive deviation from perfect period commensurabilities (Δ) near first-order mean motion resonances (MMRs). Resonant
Yuancheng Xu, Fei Dai
doaj   +1 more source

Stability of Proton Superoxide and its Superionic Transition Under High Pressure

Advanced Science, Volume 12, Issue 9, March 6, 2025.
The study predicts the stable proton superoxide (HO2) under extreme conditions using Density Functional Theory (DFT)‐based crystal structure prediction. HO2 exhibits metallic behavior at high pressure, transitions to an insulator under reduced pressure, and becomes superionic with high electrical conductivity under elevated temperatures.
Zifan Wang, Wenge Yang, Duck Young Kim
wiley   +1 more source