Results 1 to 10 of about 6,137,191 (333)

Dynamical investigations of the multiple stars

open access: yesOpen Astronomy, 2017
Two multiple stars - the quadruple star - Bootis (ADS 9173) and the triple star T Taury were investigated. The visual double star - Bootiswas studied on the basis of the Pulkovo 26-inch refractor observations 1982-2013.
Kiyaeva Olga V., Zhuchkov Roman Ya.
doaj   +2 more sources

Unresolved Multiple Stars and Galactic Clusters’ Mass Estimates [PDF]

open access: bronze, 2021
If not properly accounted for, unresolved binary stars can induce a bias in the photometric determination of star cluster masses inferred from star counts and the luminosity function.
O. Borodina   +3 more
openalex   +3 more sources

Spectroscopic Orbits of Subsystems in Multiple Stars. III. [PDF]

open access: bronzeAstronomical Journal, 2018
Spectroscopic orbits are computed for inner pairs in six nearby hierarchical multiple systems (HIP 35733, 95106/95110, 105441, 105585/105569, 105947, and 109951).
Andreï Tokovinin
openalex   +3 more sources

Speckle Observations and Orbits of Multiple Stars [PDF]

open access: bronzeAstronomical Journal, 2019
We report results of speckle-interferometric monitoring of visual hierarchical systems using the newly commissioned instrument NN-EXPLORE Exoplanet and Stellar Speckle Imager at the 3.5 m WIYN telescope.
Andreï Tokovinin   +4 more
openalex   +3 more sources

Multiple Stellar Populations in Asymptotic Giant Branch Stars of Galactic Globular Clusters [PDF]

open access: bronze, 2021
Multiple stellar populations (MPs) are a distinct characteristic of globular clusters (GCs). Their general properties have been widely studied among main-sequence, red giant branch (RGB), and horizontal branch (HB) stars, but a common framework is still ...
E. P. Lagioia   +10 more
openalex   +3 more sources

ORBITS OF SUBSYSTEMS IN FOUR HIERARCHICAL MULTIPLE STARS [PDF]

open access: bronze, 2016
Seven spectroscopic orbits in nearby solar-type multiple stars are presented. The primary of the chromospherically active star HIP 9642 is a 4.8 day double-lined pair; the outer 420 year visual orbit is updated, but remains poorly constrained.
Andreï Tokovinin
openalex   +3 more sources

Multiple views of magnetism in cool stars [PDF]

open access: green, 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 ...
J. Morin   +11 more
openalex   +5 more sources

On the properties of young multiple stars [PDF]

open access: bronze, 2004
We present numerical results on the properties of young binary and multiple stellar systems. Our analysis is based on a series of smoothed particle hydrodynamics (SPH) +N-body simulations of the fragmentation of small molecular clouds, which fully ...
Eduardo Delgado-Donate   +3 more
openalex   +3 more sources

Speckle interferometry of nearby multiple stars. IV. Measurements in 2004 and new orbits [PDF]

open access: green, 2007
The results of speckle interferometric observations of 104 binary and 6 triple stars performed at the BTA 6 m telescope in 2004 October are presented.
И. И. Балега   +6 more
openalex   +3 more sources

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