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Dusty Rings: Signposts of Recent Planet Formation
Scott J. Kenyon, Benjamin C. Bromley
Many nearby stars are surrounded by a bright ring or disk of cold dust. Our calculations show that these disks and rings of dust are signposts of recent planet formation. Bright ri…
Spectroscopic survey of the Galactic open cluster NGC 6871 I. New emission line stars
Zoltan Balog, Scott J. Kenyon
We analyze spectra of 44 emission line stars detected in a low resolution optical spectroscopic survey of the galactic open cluster NGC 6871. The survey of 1217 stars is complete t…
A Near-Infrared Imaging Survey of Coalsack Globule 2
German Racca, Mercedes Gomez, Scott J. Kenyon
We describe a near-infrared imaging survey of Globule 2 in the Coalsack. This Bok globule is the highest density region of this southern hemisphere molecular cloud and is the most…
The Eclipsing Binary BG Geminorum: Improved Constraints on the Orbit and the Structure of the Accretion Disk
Scott J. Kenyon, Paul J. Groot, Priscilla Benson
We describe new optical photometric and spectroscopic observations of the semi-detached eclipsing binary BG Geminorum. A large change in the amount of Mg I absorption at secondary…
Extended Near-Infrared Emission from Candidate Protostars in the Taurus-Auriga Molecular Cloud
Shinae Park, Scott J. Kenyon
We describe near-IR imaging data for a sample of 23 class I sources in the Taurus-Auriga dark clouds. Combining our data with previous photometry, we detect brightness variations o…