Couperus, Andrew A. https://orcid.org/0000-0001-9834-5792
Henry, Todd J. https://orcid.org/0000-0002-9061-2865
Kar, Aman https://orcid.org/0000-0002-9811-5521
Jao, Wei-Chun https://orcid.org/0000-0003-0193-2187
Vrijmoet, Eliot Halley https://orcid.org/0000-0002-1864-6120
Osten, Rachel A. https://orcid.org/0000-0001-5643-8421
Funding for this research was provided by:
National Science Foundation (AST-141206)
National Science Foundation (AST-1715551)
National Science Foundation (AST-2108373)
SI ∣ Smithsonian Astrophysical Observatory (GO1-22013B)
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Article Title: The Solar Neighborhood. LIII. M Dwarf Twin Binaries—One in Five Twin Sibling Pairs Are Mismatched in Activity and/or Rotation
Journal Title: The Astronomical Journal
Article Type: paper
Copyright Information: © 2026. The Author(s). Published by the American Astronomical Society.
Publication dates
Date Received: 2025-10-24
Date Accepted: 2025-12-18
Online publication date: 2026-02-17