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The Gemini NICI Planet-Finding Campaign
Michael C. Liu, Zahed Wahhaj, Beth A. Biller +21
Our team is carrying out a multi-year observing program to directly image and characterize young extrasolar planets using the Near-Infrared Coronagraphic Imager (NICI) on the Gemin…
Modeling the Halpha line emission around classical T Tauri stars using magnetospheric accretion and disk wind models
G. H. R. A. Lima, S. H. P. Alencar, N. Calvet +2
Spectral observations of classical T Tauri stars show a wide range of line profiles, many of which reveal signs of matter inflow and outflow. Halpha is the most commonly observed l…
The Gemini NICI Planet-Finding Campaign: Discovery of a Close Substellar Companion to the Young Debris Disk Star PZ Tel
Beth A. Biller, Michael C. Liu, Zahed Wahhaj +24
We report the discovery of a tight substellar companion to the young solar analog PZ Tel, a member of the Beta Pictoris moving group observed with high contrast adaptive optics ima…
Correlated optical and X-ray variability in CTTS - Indications of absorption-modulated emission
E. Flaccomio, G. Micela, F. Favata +1
Optical and X-ray emission from classical T Tauri stars (CTTSs) has long been known to be highly variable. Our long, uninterrupted optical observation of the NGC2264 region with Co…
Accretion dynamics and disk evolution in NGC 2264: a study based on the Corot photometric observations
S. H. P. Alencar, P. S. Teixeira, M. M. Guimaraes +6
The young cluster NGC 2264 was observed with the Corot satellite for 23 days uninterruptedly in March 2008 with unprecedent photometric accuracy. We present here the first results…