Direct infrared imaging of VB 8

Details Direct infrared imaging of VB 8 Direct infrared imaging of VB 8

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...312l..55s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 312, Jan. 15, 1987, p. L55-L58. Research supported

Astronomy and Astrophysics

Astronomy

14

Companion Stars, Dwarf Stars, Infrared Photometry, Infrared Stars, M Stars, Brown Dwarf Stars, Infrared Sources (Astronomy), Nebulae, Stellar Envelopes

Scientific paper

Near-infrared images of VB 8 taken at K (2.2 microns) and L-prime (3.75 microns) during a period of good seeing at the IRTF show no evidence of the brown dwarf companion reported by McCarthy et al. (1985). Any companion 1.0 arcsec away from the primary must be at least 4 mag fainter than the primary at K and 3 mag fainter at L-prime in order to escape detection. A faint nebula centered on the star with scattering properties similar to a nebula detected near another main-sequence M star, Lalande 21185 (reported by McCarthy in 1986), may account for the extended emission detected by speckle observations.

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