Near Infrared Observations of GQ Lup b Using the Gemini Integral Field Spectrograph NIFS (2009)
Lavigne, Jean-Francois, Doyon, Rene, Lafreniere, David, Marois, Christian, Barman, Travis
We present new JHK spectroscopy (R ~ 5000) of GQ Lup b, acquired with the near-infrared integral field spectrograph NIFS and the adaptive optics system ALTAIR at the Gemini North telescope. Angular...
HST/NICMOS detection of HR 8799 b in 1998 (2009)
Lafrenière, David, Marois, Christian, Doyon, René, Barman, Travis
Three planets have been directly imaged around the young star HR 8799. The planets are 5-13 Mjup and orbit the star at projected separations of 24-68 AU. While the initial detection occurred in 2007,...
Looper, Dagny L., Kirkpatrick, J. Davy, Cutri, Roc M., Barman, Travis, Burgasser, Adam J., Cushing, Michael C., ...
We present the discovery of two nearby L dwarfs from our 2MASS proper-motion search, which uses multiepoch 2MASS observations covering ~4700 deg^2 of sky. 2MASS J18212815+1414010 and 2MASS...
VV Pup in a low state: secondary-star irradiation or stellar activity? (2008)
Mason, Elena, Howell, Steve B., Barman, Travis, Szkody, Paula, Wickramasinghe, Dayal
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 irradiated secondary-star....
Looper, Dagny L., Kirkpatrick, J. Davy, Cutri, Roc M., Barman, Travis, Burgasser, Adam J., Cushing, Michael C., ...
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+1414010 and 2MASS...
The Broadband Infrared Emission Spectrum of the Exoplanet HD 189733b (2008)
Charbonneau, David, Knutson, Heather A., Barman, Travis, Allen, Lori E., Mayor, Michel, Megeath, S. Thomas, ...
We present Spitzer Space Telescope time series photometry of the exoplanet system HD 189733 spanning two times of secondary eclipse, when the planet passes out of view behind the parent star. We...
Two Classes of Hot Jupiters (2007)
Hansen, Brad M. S., Barman, Travis
We identify two classes of transiting planet, based on their equilibrium temperatures and Safronov numbers. We examine various possible explanations for the dichotomy. It may reflect the influence of...
Discovery of a 66 mas Ultracool Binary with Laser Guide Star Adaptive Optics (2007)
Siegler, Nick, Close, Laird M., Burgasser, Adam J., Cruz, Kelle L., Marois, Christian, Macintosh, Bruce, ...
We present the discovery of 2MASS J21321145+1341584AB as a closely separated (0.066") very low-mass field dwarf binary resolved in the near-infrared by the Keck II Telescope using laser guide star...
Close, Laird M., Zuckerman, Ben, Song, Inseok, Barman, Travis, Marois, Christian, Rice, Emily L., ...
We imaged five objects near the star forming clouds of Ophiuchus with the Keck Laser Guide Star AO system. We resolved Allers et al. (2006)'s #11 (Oph 16222-2405) and #16 (Oph 16233-2402) into binary...
Atmospheres of Extrasolar Giant Planets (2006)
Marley, Mark S., Fortney, Jonathan, Seager, Sara, Barman, Travis
The key to understanding an extrasolar giant planet's spectrum--and hence its detectability and evolution--lies with its atmosphere. Now that direct observations of thermal emission from extrasolar...
Low Temperature Opacities (2005)
Ferguson, Jason W., Alexander, David R., Allard, France, Barman, Travis, Bodnarik, Julia G., Hauschildt, Peter H., ...
Previous computations of low temperature Rosseland and Planck mean opacities from Alexander & Ferguson (1994) are updated and expanded. The new computations include a more complete equation of state...
Quiescent observations of the WZ Sge type dwarf nova PQ Andromedae (2004)
Schwarz, Greg J., Barman, Travis, Silvestri, Nicole, Szkody, Paula, Starrfield, Sumner, Vanlandingham, Karen, ...
We have obtained time series optical spectra of the cataclysmic variable PQ And in quiescence. The spectra show a white dwarf continuum with narrow Balmer emission superimposed over strong Balmer...