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arXiv · 2105.07040

Speckle Interferometry at SOAR in 2020

Andrei Tokovinin·Brian D. Mason·Rene A. Mendez·Edgardo Costa·Andrew W. Mann·Todd J. Henry
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Abstract

The results of speckle interferometric observations at the 4.1 m Southern Astrophysical Research Telescope (SOAR) in 2020, as well as earlier unpublished data, are given, totaling 1735 measurements of 1288 resolved pairs and non-resolutions of 1177 targets. We resolved for the first time 59 new pairs or subsystems in known binaries, mostly among nearby dwarf stars. This work continues our long-term speckle program. Its main goal is to monitor orbital motion of close binaries, including members of high-order hierarchies and Hipparcos pairs in the solar neighborhood. We also report observations of 892 members of young moving groups and associations, where we resolved 103 new pairs.

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Andrei Tokovinin, Brian D. Mason, Rene A. Mendez, Edgardo Costa, Andrew W. Mann, Todd J. Henry. 2021-05-14. Speckle Interferometry at SOAR in 2020. https://doi.org/10.3847/1538-3881/ac00bd

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