Results 81 to 90 of about 828 (196)
A multiplicity study of transiting exoplanet host stars [PDF]
, 2020 Context. Many main-sequence stars are part of multiple systems. The effect of stellar multiplicity on planet formation and migration, however, is poorly understood. Aims.
Kenworthy, M.A. +11 more
core +2 more sources
The Astronomical JournalExoplanet systems are thought to evolve on secular timescales over billions of years. This evolution is impossible to directly observe on human timescales in most individual systems.
Stephen P. Schmidt +2 more
doaj +1 more source
Coupled Planetary Interior and Tidal Evolution
The Astrophysical JournalWe present a new planetary structure/thermal evolution model, designed for use in problems that couple orbital dynamics with planetary structure. We first benchmark our structural/thermal evolution calculations against the MESA stellar evolution code ...
Tim Hallatt, Sarah Millholland
doaj +1 more source
Additive Manufacturing Provides Infinite Possibilities for Self‐Sensing Technology
Advanced Science, Volume 11, Issue 28, July 24, 2024.Proprioception embedded in biological bodies can be migrated to smart devices, depending on the right configuration of materials and structures in the right place. Additive manufacturing technology can meet this very well, which provides unlimited possibilities for the preparation of self‐sensing intelligent devices.
Daobing Chen +4 more
wiley +1 more source
The Radius Cliff is a Waterfall: Explaining Sub-Neptune Exoplanets with Steam Worlds
The Astrophysical JournalThe demographics of Kepler planets provide a key testbed for models of planet formation and evolution, particularly for explaining the radius valley separating super-Earths and sub-Neptunes.
Aritra Chakrabarty +3 more
doaj +1 more source
Constraining stellar tidal quality factors from planet‐induced stellar spin‐up
Astronomische Nachrichten, Volume 345, Issue 5, June 2024.Abstract The dynamical evolution of tight star‐planet systems is influenced by tidal interactions between the star and the planet, as was shown recently. The rate at which spins and orbits in such a system evolve depends on the stellar and planetary tidal dissipation efficiency. Here, we present a method to constrain the modified tidal quality factor Q*
Nikoleta Ilić +3 more
wiley +1 more source
Die Suche nach kalten, fremden Welten
Physik in unserer Zeit, Volume 55, Issue 3, Page 140-147, May 2024.Die meisten der heute bekannten extrasolaren Planeten umkreisen ihren Mutterstern auf engen Umlaufbahnen in weniger als 100 Tagen. Gesteinsplaneten mit größeren Bahnradien sind von herausragender Bedeutung für Theorien der Planetenentstehung. Die Mikrogravitationslinsenmethode bietet eine hervorragende Möglichkeit, solche Planeten zu finden – und das ...
Markus Hundertmark, Yiannis Tsapras
wiley +1 more source
Rattle-and-break: The Impact of Planetesimal Scattering on Super-Earth Resonant Chains
The Astrophysical JournalThe spacings of super-Earths in multitransiting systems exhibit a distribution that is broad and mostly featureless, with the exception of notable excesses of planet pairs situated a few percent wide of first-order mean-motion resonances (MMRs).
Sam Hadden, Yanqin Wu
doaj +1 more source
The Astronomical JournalIt has been suggested that β Pic b has a supersolar metallicity and subsolar C/O ratio. Assuming solar carbon and oxygen abundances for the star β Pic and therefore the planet’s parent protoplanetary disk, β Pic b’s C/O ratio suggests that it formed via ...
Henrique Reggiani +7 more
doaj +1 more source
Outward Migration of Low-Mass Planets: A Key to Observed Exoplanet Demographics
The rapidly expanding catalog of exoplanets reveals a striking diversity in planetary system architectures, characterized by the prevalence of super-Earths and mini-Neptunes, and distinctive features such as the "radius valley." While inward migration has long been established as a dominant process, particularly for hot Jupiters, the role of outward ...
Revista, Zen, ASTRO, 10
openaire +1 more source