Speckle Interferometry at SOAR Telescope in 2023

Abstract Results of the speckle-interferometry observations at the 4.1 m Southern Astrophysical Research Telescope obtained during 2023 are presented: 1913 measurements of 1533 resolved pairs or subsystems (median separation 0.″16) and nonresolutions of 552 targets; 42 pairs are resolved here for th...

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Bibliographic Details
Published in:	The Astronomical journal Vol. 168; no. 1; pp. 28 - 40
Main Authors:	Tokovinin, Andrei, Mason, Brian D., Mendez, Rene A., Costa, Edgardo
Format:	Journal Article
Language:	English
Published:	Madison The American Astronomical Society 01-07-2024 IOP Publishing
Subjects:	Astrophysical research Binary stars Interferometric binary stars Interferometry Multiple stars Speckle interferometry Subsystems
Online Access:	Get full text
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Summary:	Abstract Results of the speckle-interferometry observations at the 4.1 m Southern Astrophysical Research Telescope obtained during 2023 are presented: 1913 measurements of 1533 resolved pairs or subsystems (median separation 0.″16) and nonresolutions of 552 targets; 42 pairs are resolved here for the first time. This work continues our long-term effort to monitor orbital motion in close binaries and hierarchical systems. A large number (147) of orbits have been determined for the first time or updated using these measurements. Complementarity of this program with the Gaia mission is highlighted.
Bibliography:	AAS54357 Stars and Stellar Physics
ISSN:	0004-6256 1538-3881
DOI:	10.3847/1538-3881/ad4d56