The infrared excess from the white dwarf star G29-38 - A brown dwarf or dust?

Details The infrared excess from the white dwarf star G29-38 - A brown dwarf or dust? The infrared excess from the white dwarf star G29-38 - A brown dwarf or dust?

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ap%26ss.143..193w&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 143, no. 1, April 1988, p. 193-197.

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3

Black Body Radiation, Brown Dwarf Stars, Cosmic Dust, Infrared Radiation, Nuclear Astrophysics, Stellar Mass, White Dwarf Stars, Absorptivity, Computational Astrophysics, Hydrocarbons

Scientific paper

The evidence of Zuckerman and Becklin (1987) of a significant infrared excess in the white dwarf star G29-38 over the wavelength range 1.25-4.8 microns and their explanation of this excess as being emitted by a brown dwarf companion star are examined critically. Using the data points from Zuckerman and Becklin's published figure and table and the models representing, respectively, a brown dwarf and organic dust grains, it is shown that the observed infrared excess is better fitted by a model involving organic dust grains than by a brown-dwarf model.

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