Results 61 to 70 of about 242,243 (273)

Predictions for the frequency and orbital radii of massive extrasolar planets [PDF]

, 2002
We investigate the migration of massive extrasolar planets due to gravitational interaction with a viscous protoplanetary disc. We show that a model in which planets form at 5 AU at a constant rate, before migrating, leads to a predicted distribution of ...
Albrow, Armitage, Artymowicz, Bally, Bell, Bennett, Bodenheimer, Bryden, Butler, Clarke, Cumming, Fleming, Ford, Gammie, Gaudi, Goldreich, Gonzalez, Hayashi, Hollenbach, J. E. Pringle, Johnstone, Kley, Königl, Lattanzi, Lin, Lin, Lin, Lineweaver, Lissauer, Lubow, Marcy, Mario Livio, Murray, Murray, Najita, Nelson, Owen, Papaloizou, Papaloizou, Papaloizou, Philip J. Armitage, Pinsonneault, Press, Pringle, Rasio, Richling, S. H. Lubow, Sasselov, Shakura, Shu, Stepinski, Suchkov, Syer, Tabachnik, Takeuchi, Thommes, Trilling, Trilling, Udry, Udry, Weidenschilling, Weidenschilling, Zucker   +62 more
core   +2 more sources

Addressing Economic Insecurities Can Improve Patient‐Reported Outcomes in Lupus

Arthritis Care &Research, Accepted Article.
Background Economic insecurities, such as food, housing, transportation, and financial challenges, are modifiable risk factors and influence patient‐reported outcomes (PROs) in systemic lupus erythematosus (SLE). We examined: 1) associations between economic insecurities and PROs; 2) the impact of screening and addressing economic insecurities during ...
Jay Patel, Tripti Singh, Meredith Ingersoll, Shelby Gomez, Amanda Weber, Sarah E. Panzer, Sancia Ferguson, Christie M. Bartels, Shivani Garg   +8 more
wiley   +1 more source

Elemental ratios in stars vs planets

, 2015
Context. The chemical composition of planets is an important constraint for planet formation and subsequent differentiation. While theoretical studies try to derive the compositions of planets from planet formation models in order to link the composition
Alibert, Yann, Leya, Ingo, Marboeuf, Ulysse, Mezger, Klaus, Thiabaud, Amaury   +4 more
core   +1 more source

Searching for signatures of planet formation in stars with circumstellar debris discs [PDF]

, 2015
(Abridged) Tentative correlations between the presence of dusty debris discs and low-mass planets have been presented. In parallel, detailed chemical abundance studies have reported different trends between samples of planet and non-planet hosts.
Eiroa, C., Maldonado, J., Montesinos, B., Mora, A., Villaver, E.   +4 more
core   +4 more sources

Mean Motion Resonances from Planet-Planet Scattering [PDF]

The Astrophysical Journal, 2008
Planet-planet scattering is the leading mechanism to explain the large eccentricities of the observed exoplanet population. However, scattering has not been considered important to the production of pairs of planets in mean motion resonances (MMRs). We present results from a large number of numerical simulations of dynamical instabilities in 3-planet ...
Raymond, Sean N., Barnes, Rory, Armitage, Philip J., Gorelick, Noel   +3 more
openaire   +2 more sources

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

Thermal modeling of subduction zones with prescribed and evolving 2D and 3D slab geometries

Progress in Earth and Planetary Science
The determination of the temperature in and above the slab in subduction zones, using models where the top of the slab is precisely known, is important to test hypotheses regarding the causes of arc volcanism and intermediate-depth seismicity.
Nathan Sime, Cian R. Wilson, Peter E. van Keken   +2 more
doaj   +1 more source

Laser Powder Bed Fusion of Copper–Tungsten Composites for Heat Sink Applications in High‐Power Electronics

Advanced Engineering Materials, EarlyView.
This article demonstrates the successful qualification of a copper–tungsten composite for laser powder bed fusion. The resulting components exhibited high density, high thermal conductivity, and reduced thermal expansion. Heat sinks with complex geometries were successfully manufactured, clearly showcasing the material's potential for additive ...
Simon Rauh, Shashank Deepak Prabhu, Jannik Huber, Lioba Fischer, Gerhard Wolf, Nico Hempel, Peter Mayr   +6 more
wiley   +1 more source

Музыкально-математико-астрономический синтез в трудах древнегреческих ученых

Вестник музыкальной науки, 2017
В статье рассматривается проблема единства музыкально-математико-астрономических представлений античных ученых начала первого тысячелетия - неопифагорейца Никомаха и выдающегося астронома Клавдия Птолемея на основе их малоизученных трудов.
Александрова, Людмила Викторовна
doaj   +1 more source

Formation of Hot Planets by a combination of planet scattering, tidal circularization, and Kozai mechanism

, 2008
We have investigated the formation of close-in extrasolar giant planets through a coupling effect of mutual scattering, Kozai mechanism, and tidal circularization, by orbital integrations.
Ito T., M. Nagasawa, Narita N., S. Ida, T. Bessho   +4 more
core   +1 more source