Results 1 to 10 of about 3,799 (216)
Some Photometric Characteristics of Population II Orbital Visual Binary Stars
Open Astronomy, 2003 A MV ,B−V diagram for metal-deficient, kinematically selected thick disk and halo visual binary stars with known orbits is presented. The magnitude differences Δm between the components are analyzed.
Bartkevičius A., Gudas A.
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Visual Binary Stars: Data to Investigate Formation of Binaries
Open Astronomy, 2016 Statistics of orbital parameters of binary stars as well as statistics of their physical characteristics bear traces of star formation history. However, statistical investigations of binaries are complicated by incomplete or missing observational data ...
Kovaleva D. +3 more
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Precise orbital parameters,masses, and parallax of the subgiant binary system 12 Persei: a combined spectroscopic–interferometric analysis [PDF]
Scientific ReportsIn this work, we determine the orbital parallax of 12 Persei from a combined spectroscopic and interferometric solution and compare it with those from Gaia and Hipparcos to assess their consistency.
Ahmad A. Abushattal +8 more
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Spectroscopic Orbits of Subsystems in Multiple Stars. IX
The 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
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The 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
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The 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
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Spectroscopic Orbits of Subsystems in Multiple Stars. X (Summary)
The 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
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Investigation Limb darkening for short period AB Andromeda eclipsing binary star
Polytechnic Journal, 2023 This work deal with characterizing the limb darkening coefficients for the short period binary stars AD Andromeda to determine the size, luminosities and masses of the Individual stars as well as orbital size and orientation of the binary system ...
Chiman Ibrahim Hussein Mrs
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Atmospheric and Fundamental Parameters of the Individual Components of Multiple Stellar Systems
The 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
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Star-crossed Lovers DI Tau A and B: Orbit Characterization and Physical Properties Determination
The Astrophysical Journal, 2023 The stellar companion to the weak-line T Tauri star DI Tau A was first discovered by the lunar occultation technique in 1989 and was subsequently confirmed by a speckle imaging observation in 1991.
Shih-Yun Tang +7 more
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