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

    Authors

    N. Phan-Bao; E. L. Martin; C. Reyle; T. Forveille;J. Lim

    Comments

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    Abbreviated Journal Title

    Astron. Astrophys.

    Keywords

    binary stars; very low mass stars, brown dwarfs; individual star :; DENIS-P J0410-1251, LP 714-37; HUBBLE-SPACE-TELESCOPE; ADAPTIVE OPTICS SURVEY; LATE-M DWARFS; BROWN; DWARFS; SOLAR NEIGHBORHOOD; ULTRACOOL DWARFS; MAIN-SEQUENCE; MULTIPLICITY; COMPANIONS; KINEMATICS; Astronomy & Astrophysics

    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 '', 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.

    Journal Title

    Astronomy & Astrophysics

    Volume

    439

    Issue/Number

    2

    Publication Date

    1-1-2005

    Document Type

    Article

    Language

    English

    First Page

    L19

    Last Page

    L22

    WOS Identifier

    WOS:000230883900005

    ISSN

    0004-6361

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