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5 papers
SOAR TESS Survey III: Mapping the Stellar Companion Deficit around TESS Planet Candidates
Carl Ziegler, Andrei Tokovinin, César Briceño +3
We present the cumulative SOAR TESS Survey, based on HRCam speckle observations of 2,982 targets, and report 433 companion measurements obtained after Survey II. In a demographic s…
Speckle Interferometry at SOAR in 2024 and 2025
Andrei Tokovinin, Brian D. Mason, Rene A. Mendez +1
Results of speckle interferometry observations at the 4.1 m SOuthern Astrophysical Research (SOAR) telescope obtained during 2024-2025 are presented. We present 5316 measurements o…
The Solar Neighborhood LIV: 54 Orbits of M Dwarf Multiples within 30 Parsecs with Speckle Interferometry at SOAR
Eliot Halley Vrijmoet, Andrei Tokovinin, Todd J. Henry +3
We present 1066 speckle measurements of M dwarf multiples observed over 2021-2024, all taken with HRCam on the Southern Astrophysical Research 4.1 m telescope. Among these, 900 obs…
Characterizing TESS-Identified Quadruple and Higher Order Eclipsing Binaries: I. Speckle Imaging with DSSI and HRCam
Steven R. Majewski, James W. Davidson, Robert F. Wilson +9
NASA's TESS mission has unveiled a plethora of eclipsing binaries (EBs), among them hundreds of triples and higher order, hierarchical systems. These complex targets require follow…
Southern binaries with the Zorro Speckle Camera @ Gemini-South
Rene A. Mendez, Andrei Tokovinin, Edgardor Costa +1
We present measurements in the context of a survey of southern hemisphere binary and multiple stellar systems observed with the Zorro Speckle dual diffraction-limited optical imagi…