A COMPANION TO THE WHITE-DWARF G261-43

Authors
ZUCKERMAN B BECKLIN EE MACINTOSH BA BIDA T
Citation
B. Zuckerman et al., A COMPANION TO THE WHITE-DWARF G261-43, The Astronomical journal, 113(2), 1997, pp. 764-766
Citations number
13
Categorie Soggetti
Astronomy & Astrophysics
Journal title
The Astronomical journal → ACNP
ISSN journal
00046256
Volume
113
Issue
2
Year of publication
1997
Pages
764 - 766
Database
ISI
SICI code
0004-6256(1997)113:2<764:ACTTWG>2.0.ZU;2-Z
Abstract
Infrared images at wavelengths between 1 and 2.5 mu m reveal that the nearby 16 000 K white dwarf, G261-43, has a companion located 1.4 arcs ec (similar to 30 AU) away. The companion is, apparently, another whit e dwarf of temperature similar to 5000 K. We estimate a difference of about 4 mag at V band. This suggests that infrared imaging with good i mage quality can be a useful method for discovering double white dwarf s where the components have significantly different temperatures and s mall separations. (C) 1997 American Astronomical Society.