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Discovery of a widely separated binary system of very low mass stars

Authors :: T. Forveille
Céline Reylé
Ngoc Phan-Bao
Jeremy Lim
Eduardo L. Martín
Laboratoire d'Astrophysique de Grenoble (LAOG)
Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Academia Sinica Institute of Astronomy and Astrophysics (ASIAA)
Academia Sinica
Instituto de Astrofisica de Canarias (IAC)
University of Central Florida [Orlando] (UCF)
Laboratoire d'astrophysique de l'observatoire de Besançon (UMR 6091) (LAOB)
Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC)
Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)
Canada-France-Hawaii Telescope Corporation (CFHT)
National Research Council of Canada (NRC)-Centre National de la Recherche Scientifique (CNRS)-University of Hawai'i [Honolulu] (UH)
Source :: Astronomy and Astrophysics-A&A, Astronomy and Astrophysics-A&A, EDP Sciences, 2005, 439, pp.L19. ⟨10.1051/0004-6361:200500149⟩, Astronomy and Astrophysics-A&A, EDP Sciences, 2005, 439, pp.L19-L22. ⟨10.1051/0004-6361:200500149⟩
Publication Year :: 2005
Publisher :: HAL CCSD, 2005.
Abstract: We report our discovery of a nearby wide binary system, LP 714-37 AB. Phan-Bao et al. identified LP 714-37 as a mid-M dwarf during a cross-identification of the NLTT and DENIS catalogues. Our CCD images resolve the system into a binary with a projected angular separation of 1.8 arcsec, or 33 AU, and low-resolution optical spectra give spectral types of M5.5 (LP 714-37A) and M7.5 (LP 714-37B). This makes LP 714-37 AB one of very few widely separated (separation > 30 AU) very low-mass binary systems known in the field, and we discuss it in the context of the multiplicity properties of very low-mass stars and brown dwarfs.<br />Accepted by A&A Letters

Details

Language :: English
ISSN :: 00046361
Database :: OpenAIRE
Journal :: Astronomy and Astrophysics-A&A, Astronomy and Astrophysics-A&A, EDP Sciences, 2005, 439, pp.L19. ⟨10.1051/0004-6361:200500149⟩, Astronomy and Astrophysics-A&A, EDP Sciences, 2005, 439, pp.L19-L22. ⟨10.1051/0004-6361:200500149⟩
Accession number :: edsair.doi.dedup.....90f16e661434deaf8ffccfe52f23525c
Full Text :: https://doi.org/10.1051/0004-6361:200500149⟩