Results 31 to 40 of about 3,529,940 (309)

Stellar Motions and Stellar Dynamics [PDF]

open access: yesTransactions of the International Astronomical Union, 1962
The texts of the twelve prepared contributions, often in abbreviated form, are given first; they are followed by a summary of the discussion on all the contributions considered together.
A. Blaauw   +8 more
openaire   +1 more source

Stellar dynamics around a massive black hole – II. Resonant relaxation [PDF]

open access: yes, 2015
We present a first-principles theory of Resonant Relaxation (RR) of a low mass stellar system orbiting a more massive black hole (MBH). We first extend the kinetic theory of Gilbert (1968) to include the Keplerian field of a black hole of mass $M_\bullet$
S. Sridhar, J. Touma
semanticscholar   +1 more source

Stellar dynamics around a massive black hole – I. Secular collisionless theory [PDF]

open access: yes, 2015
We present a theory in three parts, of the secular dynamics of a (Keplerian) stellar system of mass $M$ orbiting a black hole of mass $M_\bullet \gg M$.
S. Sridhar, J. Touma
semanticscholar   +1 more source

Dynamics of Dwarf Galaxies Disfavor Stellar-Mass Black Holes as Dark Matter. [PDF]

open access: yesPhysical Review Letters, 2017
We study the effects of black hole dark matter on the dynamical evolution of stars in dwarf galaxies. We find that mass segregation leads to a depletion of stars in the center of dwarf galaxies and the appearance of a ring in the projected stellar ...
S. Koushiappas, A. Loeb
semanticscholar   +1 more source

MODEST-1: Integrating stellar evolution and stellar dynamics [PDF]

open access: yesNew Astronomy, 2003
We summarize the main results from MODEST-1, the first workshop on MOdeling DEnse STellar systems. Our goal is to go beyond traditional population synthesis models, by introducing dynamical interactions between single stars, binaries, and multiple systems.
Hut, Piet   +9 more
openaire   +2 more sources

Chaotic Dynamics of Stellar Spin in Binaries and the Production of Misaligned Hot Jupiters

open access: yesEPJ Web of Conferences, 2015
Motivated by observed hot Jupiter systems with high stellar obliquities, we examine the dynamics of stellar spin in planetary systems with distant stellar companions, with inclinations sufficiently high so that the planet undergoes Kozai-Lidov ...
Anderson Kassandra R.   +2 more
doaj   +1 more source

Wrinkles in Time. I. Rapid Rotators Found in High-eccentricity Orbits

open access: yesThe Astrophysical Journal, 2023
Recent space-based missions have ushered in a new era of observational astronomy, where high-cadence photometric light curves for thousands to millions of stars in the solar neighborhood can be used to test and apply stellar age-dating methods, including
Rayna Rampalli   +4 more
doaj   +1 more source

On Cluster Rotation in the Galactic Tidal Field

open access: yesOpen Astronomy, 2014
The dynamics of a rotating star cluster moving along a circular orbit in the axisymmetrical steady Galaxy is considered. The generalized tensor virial theorem allows to estimate its rotation speed.
Ossipkov Leonid P.
doaj   +1 more source

The MODEST questions: challenges and future directions in stellar cluster research [PDF]

open access: yes, 2006
We present a review of some of the current major challenges in stellar cluster research, including young clusters, globular clusters, and galactic nuclei.
Amaro-Seoane, Pau   +9 more
core   +3 more sources

A Search for Stellar Siblings of the ∼200 Myr TOI-251 b Planetary System

open access: yesThe Astrophysical Journal, 2023
Young planets (
Qinghui Sun   +6 more
doaj   +1 more source

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