Results 101 to 110 of about 29,221 (232)

Star-planet interactions and dynamical evolution of exoplanetary systems

EPJ Web of Conferences, 2015
The dynamical evolution of planetary systems, after the evaporation of the accretion disk, is the result of the competition between tidal dissipation and the net angular momentum loss of the system.
Damiani Cilia
doaj   +1 more source

Extrasolar Planet Orbits and Eccentricities

, 2003
The known extrasolar planets exhibit many interesting and surprising features--extremely short-period orbits, high-eccentricity orbits, mean-motion and secular resonances, etc.--and have dramatically expanded our appreciation of the diversity of possible
Tremaine, Scott, Zakamska, Nadia L.
core   +2 more sources

Mind and Cosmos as Throughput Systems: A Convergence Through the Throughput Model

Systems Research and Behavioral Science, EarlyView.
ABSTRACT This paper advances a conceptual and mathematical foundations approach by applying the throughput model (TPM) to cosmic phenomena, reframing the universe as an extended information processing system. TPM's four stages, Perception, Information, Judgement and Decision Choice, are reformulated in explicit information‐theoretic and dynamical ...
Waymond Rodgers
wiley   +1 more source

Circumplanetary Disk Candidate in the Disk of HD 163296 Traced by Localized Emission from Simple Organics

The Astrophysical Journal Letters
Atacama Large Millimeter/submillimeter Array observations suggest that the disk of HD 163296 is being actively shaped by embedded yet unseen protoplanets, as indicated by numerous gas and dust substructures consistent with planet–disk interaction models.
Andrés F. Izquierdo, Jaehan Bae, Maria Galloway-Sprietsma, Ewine F. van Dishoeck, Stefano Facchini, Giovanni Rosotti, Jochen Stadler, Myriam Benisty, Leonardo Testi   +8 more
doaj   +1 more source

Orbital migration of interacting low-mass planets in evolutionary radiative turbulent models

, 2012
The torques exerted by a locally isothermal disk on an embedded planet lead to rapid inward migration. Recent work has shown that modeling the thermodynamics without the assumption of local isothermality reveals regions where the net torque on an ...
Baruteau, Baruteau, Bell, Brandon Horn, Davis, Fleming, Hellary, Laughlin, Lynden-Bell, Lyra, Morbidelli, Mordecai-Mark Mac Low, Oishi, Oppenheimer, Papaloizou, Shakura, Sándor, Tanaka, Tanaka, Uribe, Wladimir Lyra, Yang, Yang, Zsolt Sándor   +23 more
core   +1 more source

A Low‐Power Radioisotope XRF Spectrometer for Detection of Light Elements on Planetary Missions

X-Ray Spectrometry, EarlyView.
ABSTRACT Current X‐ray spectrometers for in situ geochemical analysis on planetary missions typically rely either on X‐ray tubes, which demand electrical power and add mass and thermal complexity, or on alpha particle X‐ray spectrometers (APXS) that use rare 244Cm$$ {}^{244}\mathrm{Cm} $$ sources, and come with severe concerns on radiation safety and ...
Leandro Silveri, Artem Knyazev, Hashem Alaidaros, Maryam Manzoor Amanullah, Zach Ioannou, Tengiz Ibrayev, Danish Khan, Sara Leardini, Laura Manenti, Simi Maria Emilia Mangani, Safa Naseem, Sandhya Sharma, Sara Trevisan, Alia Zino, Francesco Arneodo   +14 more
wiley   +1 more source

Massive Debris Disks May Hinder Secular Stirring by Planetary Companions: An Analytic Proof of Concept

The Astrophysical Journal
Debris disks or exo-Kuiper belts, detected through their thermal or scattered emission from their dusty components, are ubiquitous around main-sequence stars.
Antranik A. Sefilian
doaj   +1 more source

In situ evaluation of the bleaching efficacy of experimental hydrogen peroxide hydrogel with MnO‐doped Biosilicate activated by violet LED light

European Journal of Oral Sciences, EarlyView.
Abstract Hydrogen peroxide (HP) at 35% is effective for dental bleaching but may reduce enamel mineral content and induce structural changes. This study developed a bleaching‐hydrogel containing 6%HP and manganese‐oxide–doped Biosilicate (MnO_BioS), activated by violet LED, under in situ conditions.
Rafael Dascanio, Marina Trevelin Souza, Camila Siqueira Silva Coelho, Matheus Kury, Edgar Dutra Zanotto, Vanessa Cavalli   +5 more
wiley   +1 more source

Worldwide Invasions of Centrarchidae: The Dark Side of the Sunfish Family

Fish and Fisheries, EarlyView.
ABSTRACT Freshwater fish invasions are major drivers of global ecological change, disrupting native biodiversity and ecosystem functions. However, many invasive fish hold significant socioeconomic value, resulting in conflict over their management. Centrarchidae, which are globally distributed and are important for sportfishing and aquaculture, are now
Neil Angelo Abreo, Jonathan Tibo, António Barbosa Nogueira, Athanasios Nikolaou, Cüneyt Kaya, Ali Serhan Tarkan, Irmak Kurtul, Stelios Katsanevakis, Ronaldo Sousa, Teun Everts, Emili García‐Berthou, John S. Hargrove, Ana Clara Sampaio Franco, Jelger Erik Herder, Julian D. Olden, Darragh J. Woodford, Antonín Kouba, J. Rob Britton, Ismael Soto, Phillip J. Haubrock   +19 more
wiley   +1 more source

The Influence of General Relativity on the Spins of Celestial Bodies in Inclined Orbits

The Astrophysical Journal
Through the Rossiter–McLaughlin effect, several hot Jupiters have been found to exhibit spin–orbit misalignment and even retrograde orbits. The high obliquity observed in these planets can be attributed to two primary formation mechanisms, as summarized ...
Huan-Rong Yuan, Ying Wang, Xin Wu, Ji-Wei Xie, Hui-Gen Liu, Ji-Lin Zhou, Wei Sun   +6 more
doaj   +1 more source