Results 51 to 60 of about 3,529,940 (309)
Secular chaotic dynamics in hierarchical quadruple systems, with applications to hot Jupiters in stellar binaries and triples [PDF]
, 2017 Hierarchical quadruple systems arise naturally in stellar binaries and triples that harbour planets. Examples are hot Jupiters (HJs) in stellar triple systems, and planetary companions to HJs in stellar binaries.
A. Hamers, D. Lai
semanticscholar +1 more source
Equation of State Dependent Dynamics and Multi-messenger Signals from Stellar-mass Black Hole Formation [PDF]
, 2017 We investigate axisymmetric black hole (BH) formation and its gravitational wave (GW) and neutrino signals with self-consistent core-collapse supernova simulations of a non-rotating 40 M⊙ progenitor star using the isotropic diffusion source approximation
K. Pan +3 more
semanticscholar +1 more source
A Study of Eight Visual-spectroscopic Southern Binaries Using Recent SOAR Observations
The Astronomical Journal, 2023 Speckle observations performed between 2019 and 2022 with the HRCam attached to the 4.1 m SOAR telescope (Cerro Pachón, Chile) permitted to improve visual orbits of the southern binaries WDS 01243-0655 (BU 1163), WDS 09275-5806 (CHR 240), WDS 12114-1647 (
José A. Docobo +4 more
doaj +1 more source
Multiple views of magnetism in cool stars [PDF]
, 2012 Magnetic fields are regarded as a crucial element for our understanding of stellar physics. They can be studied with a variety of methods which provide complementary - and sometimes contradictory - information about the structure, strength and dynamics ...
Arzoumanian +24 more
core +3 more sources
Interaction Between Convection and Pulsation
Living Reviews in Solar Physics, 2015 This article reviews our current understanding of modelling convection dynamics in stars. Several semi-analytical time-dependent convection models have been proposed for pulsating one-dimensional stellar structures with different formulations for how the
Günter Houdek, Marc-Antoine Dupret
doaj +1 more source
Astrophysical Properties of 600 Bona Fide Single Stars in the Hyades Open Cluster
The Astronomical Journal, 2023 The determination of the astrophysical properties of stars remains challenging and frequently relies on the application of stellar models. Stellar sequences in nearby open clusters provide some of the best means to test and calibrate stellar evolutionary
Wolfgang Brandner +2 more
doaj +1 more source
Stellar hydrodynamical modeling of dwarf galaxies: simulation methodology, tests, and first results
, 2015 Cosmological simulations still lack numerical resolution or physical processes to simulate dwarf galaxies in sufficient details. Accurate numerical simulations of individual dwarf galaxies are thus still in demand.
Hensler, Gerhard +2 more
core +1 more source
Linking the formation and fate of exo-Kuiper belts within solar system analogues [PDF]
, 2020 Escalating observations of exo-minor planets and their destroyed remnants both passing through the solar system and within white dwarf planetary systems motivate an understanding of the orbital history and fate of exo-Kuiper belts and planetesimal discs.
Cai, Maxwell X. +9 more
core +4 more sources
Combining Stellar Evolution and Stellar Dynamics [PDF]
Symposium - International Astronomical Union, 1996 There seem to me to be four approaches to the problem of computing the evolution of star clusters. Firstly, one might assume that our knowledge of the evolution of stars can be condensed into a subroutine that can be added to an N-body code. This subroutine would mainly have to give the radius and the time-dependent mass of a star as a function of its ...
openaire +1 more source
Stellar Dynamical Modeling—Counting Conserved Quantities
Research in Astronomy and Astrophysics, 2023 Abstract Knowing the conserved quantities that a galaxy’s stellar orbits conform to is important in helping us understand the stellar distribution and structures within the galaxy. Isolating integrals of motion and resonances are particularly important, non-isolating integrals less so.
Richard J. Long, Shude Mao, Yougang Wang
openaire +3 more sources