Results of the speckle-interferometry observations at the 4.1 m Southern Astrophysical Research Telescope (SOAR) obtained during 2023 are presented: 1913 measurements of 1533 resolved pairs or subsystems (median separation 0.16") and non-resolutions 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.
@article{arxiv.2405.10071,
title = {Speckle Interferometry at SOAR in 2023},
author = {Andrei Tokovinin and Brian D. Mason and Rene A. Mendez and Edgardo Costa},
journal= {arXiv preprint arXiv:2405.10071},
year = {2024}
}
Comments
Accepted by The Astronomical Journal. 17 pages, 5 Figures, 6 Tables. The tables of measurements can be downloaded from https://www.ctio.noirbab.edu/~atokovin/papers/soardata-2024.tar.gz