Results 81 to 90 of about 8,820 (196)
Exoplanet Occurrence Rate with Age for FGK Stars in Kepler
The Astronomical JournalWe measure the exoplanet occurrence rate as a function of isochrone and gyrochronology ages using confirmed and candidate planets identified in Q1–17 DR25 Kepler data. We employ Kepler's pipeline detection efficiency to correct for the expected number of
Maryum Sayeed +6 more
doaj +1 more source
Effects of Hydrogen on Fe‐S Alloys and Their Implications for the Martian Core
Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.Abstract Meteorites suggest the Martian core comprises iron (Fe) or iron‐nickel (Fe‐Ni) alloy with sulfur (S) identified as the primary light element. The InSight data revealed a larger, less dense Martian core than previously estimated, indicating additional light elements.
Xuehui Wei +4 more
wiley +1 more source
The MgI line: a new probe of the atmospheres of evaporating exoplanets
, 2014 Transit observations of HD209458b in the UV revealed signatures of neutral magnesium escaping the planet's upper atmosphere. The absorption detected in the MgI line provides unprecedented information on the physical conditions at the altitude where the ...
Bourrier, V. +2 more
core +3 more sources
Magnetic Evolution of Super‐Earth Exoplanets With a Basal Magma Ocean
Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.Abstract Habitability of super‐Earths likely requires self‐sustained magnetic fields to shield their atmospheres from stellar forcing. Extreme pressures and temperatures probably produce a long‐lived basal magma ocean (BMO), a potential source for these fields.
Victor Lherm +2 more
wiley +1 more source
JWST Discovers the Vertical Structure of Uranus' Ionosphere
Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.Abstract On 19 January 2025, the James Webb Space Telescope (JWST) program # $\mathrm{\#}$5073 observed Uranus for almost a full rotation with NIRSpec. We present the first ever vertical ionospheric profiles of H3+ ${\mathrm{H}}_{3}^{+}$ temperature, volumetric density and total emission.
Paola I. Tiranti +7 more
wiley +1 more source
Dynamics of co-orbital exoplanets
, 2017 PhD thesis, defended the 27th September ...
openaire +2 more sources
Advanced Optical Materials, Volume 14, Issue 5, 2 February 2026.A simple and efficient method for determining the stability of optical vortices via Fourier transform using a conventional spherical lens is presented. The theoretical and experimental results demonstrate a practical approach to directly and unambiguously measure the magnitude and sign of the topological charge of a beam without altering an ...
Elena Melnikova +5 more
wiley +1 more source
Breaking Giant Chains: Early-stage Instabilities in Long-period Giant Planet Systems
The Astrophysical JournalOrbital evolution is a critical process that sculpts planetary systems, particularly during their early stages where planet–disk interactions are expected to lead to the formation of resonant chains.
Vighnesh Nagpal +2 more
doaj +1 more source
, 2017 Resolving Orbital and Climate Keys of Earth and Extraterrestrial Environments with Dynamics (ROCKE-3D) is a 3-Dimensional General Circulation Model (GCM) developed at the NASA Goddard Institute for Space Studies for the modeling of atmospheres of Solar ...
Aleinov, Igor +10 more
core +1 more source
Confirmation of a Non‐Transiting Planet in the Habitable Zone of the Nearby M Dwarf L 98‐59
Astronomische Nachrichten, Volume 347, Issue 2, February 2026.ABSTRACT Only 40 exoplanetary systems with five or more planets are currently known. These systems are crucial for our understanding of planet formation and planet‐planet interaction. The M dwarf L 98‐59 has previously been found to show evidence of five planets, three of which are transiting.
Paul I. Schwarz +2 more
wiley +1 more source