Open AccessPhotometric Properties of L and T Dwarf Binaries
Author(s) -
Alyssa C Leone,
William M. J. Best,
Mengmeng Liu,
E. A. Magnier,
Trent J. Dupuy
Publication year - 2021
Publication title -
research notes of the aas
Language(s) - English
Resource type - Journals
ISSN - 2515-5172
DOI - 10.3847/2515-5172/ac4608
Subject(s) - brown dwarf , astrophysics , physics , stellar classification , binary number , photometry (optics) , astronomy , stars , mathematics , arithmetic
Recent studies using volume-limited samples of brown dwarfs have revealed the photometric evolution of single L and T dwarfs and unresolved binaries as they age and cool, in particular as they transition from L to T spectral types. We demonstrate that the near-infrared photometric evolution of the resolved components of L and T dwarf binaries is consistent with that of single objects using a volume-limited sample. In addition, we provide supporting evidence that the L9 dwarf WISE J185101.83+593508.6 is an unresolved binary and identify three more candidate or confirmed unresolved binaries all from being overluminous for their spectral type. We calculate a new binary fraction of 13.1% ± 1.8% for L0–T8 dwarfs.