15 papers · 1 filter
STIS Imaging of the HR 4796A Circumstellar Debris Ring
G. Schneider, A. J. Weinberger, E. E. Becklin +2
We have obtained high spatial resolution imaging observations of the HR 4796A circumstellar debris dust ring using the broad optical response of the Hubble Space Telescope Imaging…
A Survey for a Coeval, Comoving Group Associated with HD 141569
Alicia N. Aarnio, Alycia J. Weinberger, Keivan G. Stassun +2
We present results of a search for a young stellar moving group associated with the star HD 141569, a nearby, isolated Herbig AeBe primary member of a 5+/-3 Myr-old triple star sys…
Color Gradients Detected in the HD 15115 Circumstellar Disk
J. H. Debes, A. J. Weinberger, I. Song
We report HST/NICMOS coronagraphic images of the HD 15115 circumstellar disk at 1.1\micron. We find a similar morphology to that seen in the visible and at H band--an edge-on disk…
On the Binary Nature of Dust-encircled BD+20 307
A. J. Weinberger
Three epochs of high resolution spectra of the star BD+20 307 show that it is a short period (~3.5 day) spectroscopic binary of two nearly identical stars. Surprisingly, the two st…
Gas and Dust Associated with the Strange, Isolated, Star BP Piscium
B. Zuckerman, C. Melis, Inseok Song +15
We have carried out a multiwavelength observational campaign demonstrating some of the remarkable properties of the infrared-bright variable star BP Psc. Surrounded by a compact du…
Evolution of Circumstellar Disks Around Normal Stars: Placing Our Solar System in Context
M. R. Meyer, D. E. Backman, A. J. Weinberger +1
Over the past 10 years abundant evidence has emerged that many (if not all) stars are born with circumstellar disks. Understanding the evolution of post-accretion disks can provide…