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Direct Imaging of Multiple Planets Orbiting the Star HR 8799
C. Marois, B. Macintosh, T. Barman +5
Direct imaging of exoplanetary systems is a powerful technique that can reveal Jupiter-like planets in wide orbits, can enable detailed characterization of planetary atmospheres, a…
VV Pup in a low state: secondary-star irradiation or stellar activity?
Elena Mason, Steve B. Howell, Travis Barman +2
Aims. Emission lines in polars show complex profiles with multiple components that are typically ascribed to the accretion stream, threading region, accretion spot, and the irradia…
TW Hydrae: evidence of stellar spots instead of a Hot Jupiter
N. Huelamo, P. Figueira, X. Bonfils +12
TW Hydrae shows significant radial-velocity variations in the optical regime. They have been attributed to a 10 Jupiter Mass planet orbiting the star at 0.04 AU. In this work, we h…
Discovery of Two Nearby, Peculiar L Dwarfs from the 2MASS Proper Motion Survey: Young or Metal-Rich?
Dagny L. Looper, J. Davy Kirkpatrick, Roc M. Cutri +9
We present the discovery of two nearby L dwarfs from our 2MASS proper motion search, which uses multi-epoch 2MASS observations covering ~4700 square degrees of sky. 2MASS J18212815…
HD 179949b: A Close Orbiting Extrasolar Giant Planet with a stratosphere?
J. R. Barnes, Travis S. Barman, H. R. A. Jones +4
We have carried out a search for the 2.14 micron spectroscopic signature of the close orbiting extrasolar giant planet, HD 179949b. High cadence time series spectra were obtained w…
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…