Results 81 to 90 of about 16,468 (216)

Precision radial velocities with CSHELL [PDF]

, 2011
Radial velocity identification of extrasolar planets has historically been dominated by optical surveys. Interest in expanding exoplanet searches to M dwarfs and young stars, however, has motivated a push to improve the precision of near infrared radial ...
Bean, Bean, Blake, Blake, Bodenheimer, Boss, Carpenter, Charles A. Beichman, Christopher J. Crockett, Christopher M. Johns-Krull, Daniel T. Jaffe, Dodson-Robinson, Eggenberger, Endl, Endl, Flynn, Hatzes, Hauschildt, Herbig, Johns-Krull, Johns-Krull, Johnson, Kupka, L. Prato, Laughlin, Livingston, Mahmud, Martín, Mayer, Mayor, McCullough, Naved I. Mahmud, Nelder, Papaloizou, Paulson, Piskunov, Prato, Queloz, Reiners, Saar, Setiawan, Vogt   +41 more
core   +3 more sources

Survey and Modeling of Windblown Ejecta Deposits on Venus

AGU Advances, Volume 6, Issue 5, October 2025.
Abstract Venus' thick atmosphere rotates in the same direction as the solid body, but ∼60 times faster. This atmospheric superrotation has produced dozens of windblown ejecta deposits (“parabolas”) on the surface of Venus. The formation and modification of parabolas is an interplay between impacts, aeolian modification, and atmospheric dynamics.
T. J. Austin, J. G. O’Rourke, N. Izenberg, E. A. Silber   +3 more
wiley   +1 more source

Evidence for a Natural Limit to Electron Space Radiation: An Application of Benford's Law

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract Recent research has highlighted observational evidence for a natural limit to the severity of energetic electron differential fluxes in the Van Allen radiation belts. Here, we analyze the occurrence distributions of electron differential fluxes from the entire Van Allen Probes mission (2012–2019) to further investigate the energy dependence of
L. Olifer, I. R. Mann
wiley   +1 more source

Phase Equilibria of Sub-Neptunes and Super-Earths

The Planetary Science Journal
We investigate the consequences of nonideal chemical interaction between silicate and overlying hydrogen-rich envelopes for rocky planets using basic tenets of phase equilibria.
Edward D. Young, Lars Stixrude, James G. Rogers, Hilke E. Schlichting, Sarah P. Marcum   +4 more
doaj   +1 more source

Ohmic Dissipation During the Formation of Super-Earth

The Astrophysical Journal, 2023
The super-Earth population, as one of the representatives of exoplanets, plays an important role in constraining the planet formation theories. According to the prediction from core-accretion models, super-Earths should be rare because their masses are ...
Shi Jia, Wei, Zhong, Cong Yu
doaj   +1 more source

Astro2020 Science White Paper: Toward Finding Earth 2.0: Masses and Orbits of Small Planets with Extreme Radial Velocity Precision [PDF]

, 2019
Having discovered that Earth-sized planets are common, we are now embarking on a journey to determine if Earth-like planets are also common. Finding Earth-like planets is one of the most compelling endeavors of the 21st century - leading us toward ...
Bean, Jacob, Burt, Jennifer, Ciardi, David R., Dragomir, Diana, Gaidos, Eric, Johnson, Marshall C., Kempton, Eliza, Konopacky, Quinn, Meyer, Michael, Teske, Johanna, Weiss, Lauren, Zhou, George   +11 more
core   +1 more source

On the Measurement of Ocean Acidity With Ambient Sound

Journal of Geophysical Research: Oceans, Volume 130, Issue 10, October 2025.
Abstract The volume‐integrated pH of seawater can be determined from the frequency and depth dependence of wind‐generated ambient noise in the ocean. Over the 1–10 kHz frequency band, three main processes contribute to the acoustic attenuation in seawater: the chemical relaxation of boric acid and magnesium carbonate (<3 kHz, related to pH) and of ...
Ernst M. Uzhansky, David R. Barclay, Michael J. Buckingham   +2 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

A Unified Treatment of Kepler Occurrence to Trace Planet Evolution. I. Methodology

The Astronomical Journal, 2023
We present Kepler exoplanet occurrence rates for planets between 0.5 and 16 R _⊕ and between 1 and 400 days. To measure occurrence, we use a nonparametric method via a kernel density estimator and use bootstrap random sampling for uncertainty estimation.
Anne Dattilo, Natalie M. Batalha, Steve Bryson   +2 more
doaj   +1 more source

Ancient Mars Climate With a Polar Ocean and Ice Sheet Dynamics

Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract In this article, we study the conditions required to maintain a stable ocean on Mars 3 Ga using a new suite of simulations. These simulations couple a 3D Global Climate Model with ocean dynamics and ice sheet flow. The model includes the main processes of the atmosphere/hydrosphere/cryosphere to investigate Mars' ancient climate.
Frédéric Schmidt, Michael J. Way, Aurélien Quiquet, Igor Aleinov, Christophe Dumas   +4 more
wiley   +1 more source