University Of Arizona Astronomy

The University of Arizona in Tucson Arizona

Event:		"EXTREME! L and T dwarfs"
Event Date/Time:		January 30, 2003 4:00 pm
Location:		Steward Observatory Room N210
Speaker:		Dr. Adam J. Burgasser
Institution:		University of California at Los Angeles
Subject(s):		Steward/NOAO Colloquium
Contact:		Jill Bechtold email: jill@as.arizona.edu phone: 520-621-6533
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Event Description Posted: November 26, 2002 3:05 pm		<><><><><><><><><><><><><><><><><><><><><><><><> NOAO/KPNO - NSO, DEPARTMENT OF ASTRONOMY AND STEWARD OBSERVATORY AND NRAO <><><><><><><><><><><><><><><><><><><><><><><><> The University of Arizona JOINT COLLOQUIUM DR. ADAM J. BURGASSER University of California at Los Angeles Division of Astronomy and Astrophysics "EXTREME! L and T dwarfs" Thursday, January 30, 2003 4:00 p.m. Steward Observatory Lecture Hall - Room N210 Abstract: Wide-field sky surveys, proper motion surveys, and deep imaging campaigns have now identified hundreds of L and T dwarfs, the coolest (literally) spectral classes of stars and brown dwarfs. While our understanding of the observational and physical properties of these objects has grown substantially over the past few years, there remain some individual systems which have either defied explanation or represent the extremes of their class. In my talk I will introduce some of these unique objects - a highly active T dwarf, the coldest brown dwarf, the most luminous T dwarf, and the first substellar subdwarf - and demonstrate how they have all enriched our understanding or have raised new questions about brown dwarfs in the Solar Neighborhood. Refreshments at 3:30PM in the Lobby