Results 21 to 30 of about 80,897 (317)

THE MASSES OF VISUAL BINARY STARS [PDF]

open access: bronzePublications of the Astronomical Society of the Pacific, 1919
R. G. Aitken
openalex   +2 more sources

Spectroscopic Orbits of Subsystems in Multiple Stars. IX

open access: yesThe Astronomical Journal, 2023
New spectroscopic orbits of inner subsystems in 14 hierarchies are determined from long-term monitoring with the optical echelle spectrometer, CHIRON.
Andrei Tokovinin
doaj   +1 more source

Detecting New Visual Binaries in Gaia DR3 with Gaia and Two Micron All Sky Survey (2MASS) Photometry. I. New Candidate Binaries within 200 pc of the Sun

open access: yesThe Astronomical Journal, 2023
We present a method to identify likely visual binaries in Gaia eDR3 that does not rely on parallax or proper motion. This method utilizes the various point-spread function sizes of Two Micron All Sky Survey (2MASS)/Gaia, where at
Ilija Medan, Sébastien Lépine
doaj   +1 more source

Mass Ratio of Single-line Spectroscopic Binaries with Visual Orbits Using Bayesian Inference and Suitable Priors

open access: yesThe Astronomical Journal, 2023
We present orbital elements for 22 single-line binaries, nine of them studied for the first time, determined from a joint spectroscopic and astrometric solution.
Jennifer Anguita-Aguero   +6 more
doaj   +1 more source

Spectroscopic Orbits of Subsystems in Multiple Stars. X (Summary)

open access: yesThe Astronomical Journal, 2023
Results of a large program of spectroscopic monitoring of nearby solar-type stellar hierarchical systems using the CHIRON echelle spectrograph at the 1.5 m telescope are summarized.
Andrei Tokovinin
doaj   +1 more source

Atmospheric and Fundamental Parameters of the Individual Components of Multiple Stellar Systems

open access: yesThe Astronomical Journal, 2023
We present detailed analyses of eight triple stellar systems (lying between 20 and 155 pc) and nine quadruple stellar systems (lying between 20 and 250 pc) with different configurations. Most of these systems are hierarchical.
Enas M. Abu-Alrob   +2 more
doaj   +1 more source

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