Publications (129)
GD248B, The Coolest Known Helium Atmosphere White Dwarf
J. Farihi, E. E. Becklin, B. Zuckerman
This is to notify colleagues that our ApJ paper and corresponding astro-ph version are being withdrawn. Optical spectroscopy obtained with a 3m class telescope gave no indication o…
HD 199143 and HD 358623: Two Recently Identified Members of the Beta Pictoris Moving Group
D. Kaisler, B. Zuckerman, I. Song +5
HD 199143 and HD 358623 (BD-17 6128) are two sets of binary stars which are physically associated and 48 pc from Earth. We present heliocentric radial velocities and high lithium a…
Throwing Icebergs at White Dwarfs
Alexander P. Stephan, Smadar Naoz, B. Zuckerman
White dwarfs have atmospheres that are expected to consist nearly entirely of hydrogen and helium, since heavier elements will sink out of sight on short timescales. However, obser…
Warm Dusty Debris Disks and Distant Companion Stars: V488 Per and 2M1337
B. Zuckerman
A possible connection between the presence of large quantities of warm (T200 K) circumstellar dust at youthful stars and the existence of wide-separation companion stars has…
The Circumstellar Disk of HD 141569 Imaged with NICMOS
A. J. Weinberger, E. E. Becklin, G. Schneider +5
Coronagraphic imaging with the Near Infrared Camera and Multi Object Spectrometer on the Hubble Space Telescope reveals a large, ~400 AU (4'') radius, circumstellar disk around the…
Dusty Debris Disks as Signposts of Planets: Implications for SIRTF
B. Zuckerman, Inseok Song
Submillimeter and near-infrared images of cool dusty debris disks and rings suggest the existence of unseen planets. At dusty but non-imaged stars, semi-major axes of associated pl…