The near-infrared spectrum of the suspected brown dwarf binary system Gliese 473

Details The near-infrared spectrum of the suspected brown dwarf binary system Gliese 473 The near-infrared spectrum of the suspected brown dwarf binary system Gliese 473

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....102..267d&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 102, July 1991, p. 267-271.

Astronomy and Astrophysics

Astronomy

13

Binary Stars, Brown Dwarf Stars, M Stars, Near Infrared Radiation, Stellar Spectra, Absorption Spectra, Main Sequence Stars, Spectrum Analysis, Stellar Evolution, Stellar Mass

Scientific paper

Near-IR observations of the low-mass binary system Gliese 473AB are presented, and the composite spectrum of the binary in the wavelength range 2.0-2.2.5 microns are examined. It is shown that the NIR spectrum of GL473AB is almost identical to those of the main-sequence systems GL65AB and GL866AB, which are binaries with broadband photometric properties similar to those of GL473. On the basis of observational properites of GL473AB, it is pointed out that, if the components of the GL473AB have substellar masses (as suggested by Heintz, 1989), then the system must be about 100 million years old.

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