Results 81 to 90 of about 9,374,373 (212)

A Theory for the Global Wind Energy Dissipation Across Climates

open access: yesAGU Advances, Volume 7, Issue 5, August 2026.
Abstract Atmospheric winds play a key role in shaping climate, ecosystems, and infrastructure. The energy that drives the winds is generated by the atmospheric heat engine. However, traditional entropy‐budget descriptions of this heat engine rely on poorly constrained microscale processes, limiting their predictive power.
Malte F. Jansen   +2 more
wiley   +1 more source

HARPS-N @ TNG, two year harvesting data : performances and results [PDF]

open access: yes, 2014
The planet hunter HARPS-N[1], in operation at the Telescopio Nazionale Galileo (TNG)[13] from April 2012 is a highresolution spectrograph designed to achieve a very high radial velocity precision measurement thanks to an ultra stable environment and in a
Latham, D.W.   +40 more
core   +1 more source

Dependence of Planet Populations on Stellar Mass and Metallicity: A Pebble-accretion-based Planet Population Synthesis Model

open access: yesThe Astrophysical Journal
The formation and evolution of planetary systems are linked to their host stellar environment. In this study, we employ a pebble-accretion-based planet population synthesis model to explore the correlation between planetary properties and stellar mass ...
Mengrui Pan   +5 more
doaj   +1 more source

TESS Hunt for Young and Maturing Exoplanets (THYME). XI. An Earth-sized Planet Orbiting a Nearby, Solar-like Host in the 400 Myr Ursa Major Moving Group

open access: yesThe Astronomical Journal
Young terrestrial worlds are critical test beds to constrain prevailing theories of planetary formation and evolution. We present the discovery of HD 63433 d—a nearby (22 pc), Earth-sized planet transiting a young Sun-like star (TOI-1726, HD 63433).
Benjamin K. Capistrant   +34 more
doaj   +1 more source

Sub-Neptunes Show a Stronger Correlation with Cold Jupiters than Super-Earths Especially in Metal-rich Systems

open access: yesThe Astrophysical Journal Letters
The correlation between the inner small planets and cold giants encodes the formation and evolution of planetary systems. It remains unclear if the correlation differs on the two sides of the radius valley.
Di-Chang Chen   +4 more
doaj   +1 more source

Eccentricity Evolution of Warm Jupiters: The Role of Distant Perturbers and nearby Companions

open access: yesThe Astrophysical Journal
Warm Jupiters (WJs)—giant exoplanets with orbital periods between 10 and 200 days—exhibit a broad range of eccentricities and are often accompanied by nearby low-mass planets.
Ying He, Dong-Hong Wu, Sheng Jin
doaj   +1 more source

Four new exoplanets and hints of additional substellar companions to exoplanet host stars

open access: yes, 2007
We present four new exoplanets: HIP 14810b and HIP 14810c, HD 154345b, and HD 187123c. The two planets orbiting HIP 14810, from the N2K project, have masses of 3.9 and 0.76 M_J.
Fischer, D. A.   +10 more
core   +1 more source

Chemical modeling of exoplanet atmospheres [PDF]

open access: yes, 2014
International audienceThe past twenty years have revealed the diversity of planets that exist in the Universe. It turned out that most of exoplanets are different from the planets of our Solar System and thus, everything about them needs to be explored ...
O. Venot   +5 more
core   +1 more source

Toward High-precision Mass Measurements of Two Sub-Neptunes in the K2-266 Planetary System Through Transit Timing

open access: yesThe Astronomical Journal
Sub-Neptunes have been found to be one of the most common types of exoplanets, yet their physical parameters and properties are poorly determined and in need of further investigation.
Ing-Guey Jiang   +5 more
doaj   +1 more source

KELT-11b: A Highly Inflated Sub-Saturn Exoplanet Transiting theV= 8 Subgiant HD 93396 [PDF]

open access: yes, 2017
We report the discovery of a transiting exoplanet, KELT-11b, orbiting the bright (V = 8.0) subgiant HD 93396. A global analysis of the system shows that the host star is an evolved subgiant star with Teff = 5370 ± 51K M&z.ast; = 1.438-0.052+0.061 &.
Jensen, Eric L. N.   +118 more
core   +1 more source

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