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A Companion to the White Dwarf G261-43
The Astronomical Journal1997Vol. 113, pp. 764–764
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Abstract
Infrared images at wavelengths between 1 and 2.5 μm reveal that the nearby 16 000 K white dwarf, G261-43, has a companion located 1.4 arcsec (∼30 AU) away. The companion is, apparently, another white dwarf of temperature ∼5000 K. We estimate a difference of about 4 mag at V band. This suggests that infrared imaging with good image quality can be a useful method for discovering double white dwarfs where the components have significantly different temperatures and small separations.
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