Results 1 to 10 of about 304,444 (325)
Planetary mass function and planetary systems [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 With planets orbiting stars, a planetary mass function should not be seen as a low-mass extension of the stellar mass function, but a proper formalism needs to take care of the fact that the statistical properties of planet populations are linked to the ...
Agresti +42 more
core +5 more sources
Saving Planetary Systems: Dead Zones & Planetary Migration [PDF]
The Astrophysical Journal, 2006 The tidal interaction between a disk and a planet leads to the planet's migration. A long-standing question regarding this mechanism is how to stop the migration before planets plunge into their central stars.
Edward W. Thommes +3 more
core +8 more sources
The protoplanetary disc HD 163296 as observed by ALMA
Vietnam Journal of Science, Technology and Engineering, 2022 HD 163296 is one of the few protoplanetary discs displaying rings in the dust component. The present work uses ALMA observations of the 0.9 mm continuum emission, which have significantly better spatial resolution (~8 au) than previously available, to ...
P.N. Diep +6 more
doaj +1 more source
The Planetary Theory of Solar Activity Variability: A Review
Frontiers in Astronomy and Space Sciences, 2022 Commenting the 11-year sunspot cycle, Wolf (1859, MNRAS 19, 85–86) conjectured that “the variations of spot-frequency depend on the influences of Venus, Earth, Jupiter, and Saturn.” The high synchronization of our planetary system is already nicely ...
Nicola Scafetta, Antonio Bianchini
doaj +1 more source
Universe, 2022 Only a low percentage of the radiation from our Sun is captured by photosynthesis, but this conversion of solar to chemical energy sustains all life on Earth.
Pablo Marcos-Arenal +7 more
doaj +1 more source
Universe, 2021 The growing database of exoplanets has shown us the statistical characteristics of various exoplanet populations, providing insight towards their origins.
Jonathan H. Jiang +4 more
doaj +1 more source
Earth, Planets and Space, 2023 We report the first experiments, where simultaneous electrical resistivity and elastic wave velocity measurements are acquired during the triaxial deformation of granite under brine-saturated conditions.
Ikuo Katayama +4 more
doaj +1 more source
Observations and modeling of the transiting exoplanets XO-2b, HAT-P-18b, and WASP-80b [PDF]
Serbian Astronomical Journal, 2017 We present photometric observations and transit solutions of the exoplanets XO-2b, HAT-P-18b and WASP 80b. Our solution of the XO-2b transit gave system parameters whose values are close to those of the previous studies. The solutions of the new
Kjurkchieva Diana P. +2 more
doaj +1 more source
Machines, 2023 Planetary gear systems have many advantages over other gear systems. Previous studies on its dynamic characteristics mostly used Earth as the reference system, which is inconsistent with the actual working conditions of many planetary gear systems, such ...
Bingwei Gao, Yongkang Wang, Guangbin Yu
doaj +1 more source
Universe, 2018 The microlensing technique is a unique method to hunt for cold planets over a range of mass and separation, orbiting all varieties of host stars in the disk of our galaxy.
Jean-Philippe Beaulieu
doaj +1 more source