LP 714-37: A wide pair of ultracool dwarfs actually is a triple

Abstract

LP 714-37 was identified by Phan-Bao et al. (2005) as one of the very few wide pairs of very low mass (VLM) stars known to date, with a separation of 33 AU. Here we present adaptive optics imaging which resolves the secondary of the wide pair into a tighter binary, with a projected angular separation of 0.36 arcsec, or 7 AU. The estimated spectral types of LP 714-37B and LP 714-37C are M8.0 and M8.5. We discuss the implications of this finding for brown dwarf formation scenarios.

arXiv commentAccepted by ApJ Letters

References in corpus (27)

• Color Transformations for the 2MASS Second Incremental Data Release
• A Giant Planet Candidate near a Young Brown Dwarf
• Astrometry and Photometry for Cool Dwarfs and Brown Dwarfs
• The Formation of Brown Dwarfs as Ejected Stellar Embryos
• Binarity in Brown Dwarfs: T Dwarf Binaries Discovered with the Hubble Space Telescope WPFC2
• The Formation Mechanism of Brown Dwarfs
• Detection of Nine M8.0-L0.5 Binaries: The Very Low Mass Binary Population and its Implications for Brown Dwarf and VLM Star Formation
• Multiplicity of Nearby Free-floating Ultra-cool Dwarfs: a HST-WFPC2 search for companions
• A search for L dwarf binary systems
• Membership and Multiplicity among Very Low-Mass Stars and Brown Dwarfs in the Pleiades Cluster
• The First Discovery of a Wide Binary Brown Dwarf
• Resolved Spectroscopy of M Dwarf/L Dwarf Binaries. I. DENIS J220002.05-303832.9AB
• New neighbours. III. 21 new companions to nearby dwarfs, discovered with adaptive optics
• Discovery of Two Very Low-Mass Binaries: Final Results of an Adaptive Optics Survey of Nearby M6.0-M7.5 Stars
• Kelu-1 is a Binary L Dwarf: First Brown Dwarf Science from Laser Guide Star Adaptive Optics
• An HST/WFPC2 Survey for Brown Dwarf Binaries in the alpha Per and the Pleiades Open Clusters
• An Adaptive Optics Survey of M8-M9 Stars: Discovery of 4 Very Low mass Binaries With at Least One System Containing a Brown Dwarf Companion
• Discovery of Five Very Low Mass Close Binaries, Resolved in the Visible with Lucky Imaging
• Multiplicity at the Stellar/Substellar Boundary in Upper Scorpius
• Multiplicity of very low-mass objects in the Upper Scorpius OB association: a possible wide binary population
• New neighbours: V. 35 DENIS late-M dwarfs between 10 and 30 parsecs
• The first wide ultracool binary dwarf in the field: DENIS-J055146.0-443412.2 (M8.5 + L0)
• LP 349-25: a new tight M8V binary
• A Hubble Space Telescope ACS Search for Brown Dwarf Binaries in the Pleiades Open Cluster
• An L0 dwarf companion in the brown dwarf desert, at 30 AU
• Discovery of a widely separated binary system of very low mass stars
• Discovery of a Wide Low-mass Binary System in Upper Scorpius

Cited by in corpus (9)

• Individual Dynamical Masses of Ultracool Dwarfs
• Astrometric orbit of a low-mass companion to an ultracool dwarf
• The High-Order-Multiplicity of Unusually Wide M-dwarf Binaries: Eleven New Triple and Quadruple Systems
• Discovery of a Very Low Mass Triple with Late-M and T Dwarf Components: LP 704-48/SDSS J0006-0852AB
• Discovery of the Widest Very Low Mass Field Binary
• The Solar Neighborhood XXIII CCD Photometric Distance Estimates of SCR Targets -- 77 M Dwarf Systems within 25 Parsecs
• Resolved Spectroscopy of M Dwarf/L Dwarf Binaries. III. The "Wide" L3.5/L4 Dwarf Binary 2MASS J15500845+1455180AB
• Detection of lithium in nearby young late-M dwarfs
• Sporadic and intense accretion in a 1 Myr-old brown dwarf candidate