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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
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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
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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
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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
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V907 Sco Switched to the Eclipsing Mode Again
The Astronomical Journal, 2023 V907 Scorpii is a unique triple system in which the inner binary component has been reported to have switched on and off eclipses several times in modern history.
Petr Zasche +3 more
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Born to Be Wide: The Distribution of Wide Binaries in the Field and Soft Binaries in Clusters
The Astrophysical Journal, 2023 Most stars, binaries, and higher-multiplicity systems are thought to form in stellar clusters and associations that later dissociate. Very wide binaries can be easily disrupted in clusters due to dynamical evaporation (soft binaries) and/or tidal ...
Mor Rozner, Hagai B. Perets
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CCD measurements of double and multiple stars at NAO Rozhen. IV [PDF]
Serbian Astronomical Journal, 2010 Using the 2 m telescope of the Bulgarian National Astronomical Observatory at Rozhen observations of 30 double or multiple stars were carried out during two half nights on July 20 and 21, 2009.
Cvetković Zorica +2 more
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A Catalog of Nearby Accelerating Star Candidates in Gaia DR3
The Astronomical Journal, 2023 We describe a new catalog of accelerating star candidates with Gaia G ≤ 17.5 mag and distances d ≤ 100 pc. Designated as the Gaia Nearby Accelerating Star Catalog (GNASC), it contains 29,684 members identified using a supervised machine-learning ...
Marc L. Whiting +3 more
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CCD measurements of double and multiple stars at NAO Rozhen. III [PDF]
Serbian Astronomical Journal, 2007 Using the 2-m telescope of the Bulgarian National Astronomical Observatory at Rozhen, observations of 55 multiple stars were carried out during one night, December 16/17. 2006.
Cvetković Z. +4 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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