3 papers
astro-ph.SR2026
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…
astro-ph.SR2026
Spitzer + HST parallaxes of 13 late T and Y dwarfs
Federico Marocco, J. Davy Kirkpatrick, Richard L. Smart +13
We present astrometric measurements for 13 cold brown dwarfs in the solar neighborhood (d < 20pc). By combining archival Spitzer data with our own Hubble Space Telescope (HST) obse…
astro-ph.SR2025
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…