Results 11 to 20 of about 6,328,275 (332)
Unresolved Multiple Stars and Galactic Clusters’ Mass Estimates [PDF]
, 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
semanticscholar +1 more source
The GALAH survey: multiple stars and our Galaxy [PDF]
Astronomy & Astrophysics, 2020 Context. Binary stellar systems form a large fraction of the Galaxy’s stars. They are useful as laboratories for studying the physical processes taking place within stars, and must be correctly taken into account when observations of stars are used to ...
G. Traven +26 more
semanticscholar +1 more source
Architecture of Hierarchical Stellar Systems and Their Formation
Universe, 2021 Accumulation of new data on stellar hierarchical systems and the progress in numerical simulations of their formation open the door to genetic classification of these systems, where properties of a certain group (family) of objects are tentatively ...
Andrei Tokovinin
doaj +1 more source
Follow-Up and Validation of K2 and TESS Planetary Systems With Keck NIRC2 Adaptive Optics Imaging
Frontiers in Astronomy and Space Sciences, 2021 High resolution imaging (HRI) is a critical part of the transiting exoplanet follow-up and validation process. HRI allows previously unresolved stellar companions and background blends to be resolved, vetting false positive signals and improving the ...
Joshua E. Schlieder +9 more
doaj +1 more source
Frontiers in Astronomy and Space Sciences, 2021 Two new imaging instruments, ‘Alopeke and Zorro, were designed, built, and commissioned at the Gemini-North and Gemini-South telescopes in 2018 and 2019, respectively. Here we describe them and present the results from over a year of operation.
Nicholas J. Scott +11 more
doaj +1 more source
Atmospheric and Fundamental Parameters of Eight Nearby Multiple Stars
, 2022 We present the complete set of atmospheric and fundamental parameters, in addition to the masses, for the individual components of eight stellar systems.
A. M. Hussein +6 more
semanticscholar +1 more source
Spectroscopic Orbits of Subsystems in Multiple Stars. VI. [PDF]
Astronomical Journal, 2019 Thirteen spectroscopic orbits of late-type stars are determined from the high-resolution spectra taken with the CHIRON echelle spectrometer at the 1.5 m Cerro Tololo Inter-American Observatory telescope.
A. Tokovinin
semanticscholar +1 more source
Speckle Observations and Orbits of Multiple Stars [PDF]
Astronomical 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.
A. Tokovinin +4 more
semanticscholar +1 more source
Spectroscopic Orbits of Subsystems in Multiple Stars. III. [PDF]
Astronomical 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).
A. Tokovinin
semanticscholar +1 more source
Dynamics of Four Triple Systems
The Astronomical Journal, 2023 Orbital motions in four hierarchical stellar systems discovered by speckle interferometry are studied. Their inner orbits are relatively well constrained, while the long outer orbits are less certain.
Andrei Tokovinin
doaj +1 more source