Results 1 to 10 of about 3,320,308 (251)

Grigori Kuzmin and Stellar Dynamics

open access: yesOpen Astronomy, 2011
Grigori Kuzmin was a very gifted dynamicist and one of the towering figures in the distinguished history of the Tartu Observatory. He obtained a number of important results in relative isolation which were later rediscovered in the West.
Zeeuw P. Tim de, Ven Glenn van de
doaj   +2 more sources

On the orbital periods for a particular case of spherical symmetry [PDF]

open access: yesSerbian Astronomical Journal, 2008
A particular case of steady state and spherical symmetry - the so-called logarithmic potential introduced as the first approximation for dark coronae of galaxies - is studied.
Ninković S., Jovanović B.
doaj   +3 more sources

Compact Binary Coalescences: Astrophysical Processes and Lessons Learned

open access: yesGalaxies, 2022
On 11 February 2016, the LIGO and Virgo scientific collaborations announced the first direct detection of gravitational waves, a signal caught by the LIGO interferometers on 14 September 2015, and produced by the coalescence of two stellar-mass black ...
Mario Spera   +2 more
doaj   +1 more source

Estimating the Parameters of Extended Gravity Theories with the Schwarzschild Precession of S2 Star

open access: yesUniverse, 2021
After giving a short overview of previous results on constraining of Extended Gravity by stellar orbits, we discuss the Schwarzschild orbital precession of S2 star assuming the congruence with predictions of General Relativity (GR). At the moment, the S2
Duško Borka   +4 more
doaj   +1 more source

Estimating the Parameters of the Hybrid Palatini Gravity Model with the Schwarzschild Precession of S2, S38 and S55 Stars: Case of Bulk Mass Distribution

open access: yesUniverse, 2022
We estimate the parameters of the Hybrid Palatini gravity model with the Schwarzschild precession of S-stars, specifically of the S2, S38 and S55 stars. We also take into account the case of bulk mass distribution near the Galactic Center. We assume that
Duško Borka   +4 more
doaj   +1 more source

Orbits, masses and dynamical parallaxes of 12 visual binary systems [PDF]

open access: yesSerbian Astronomical Journal, 2003
In this paper the preliminary orbital elements are presented for the following double stars: WDS 00153+4412 = A 1256 AB, WDS 00470+2315 = HU 413, WDS 00520+3154 = A 924, WDS 01036+6341 = MLR 87, WDS 01131+2942 = A 1260, WDS 01158+0947 = A 2102, WDS 01200-
Olević Dragomir M.   +3 more
doaj   +1 more source

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

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

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

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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