BEGIN:VCALENDAR
PRODID:-//University of Illinois//Web Services Calendar//EN
VERSION:2.0
CALSCALE:GREGORIAN
BEGIN:VEVENT
DTSTAMP:20120214T124358Z
DTSTART;TZID=America/Chicago:20100921T160000
DTEND;TZID=America/Chicago:20100921T160000
SUMMARY:Astrophysics Colloquium:  Kevin L. Luhman\, PSU: "The Formation o
 f Brown Dwarfs and Wide Planetary Companions"
CREATED:20100714T110000Z
DESCRIPTION:Brown dwarfs have been discovered at progressively lower mass
 es in recent years\, reaching well into the mass regime of giant planets
 .  Meanwhile\, high-contrast imaging is beginning to uncover planetary-m
 ass companions in very large orbits around stars and brown dwarfs.  It i
 s difficult for theories of star and planet formation to explain theexis
 tence of both free-floating brown dwarfs and wide planetary companions. 
 I will review recent observational and theoretical progress in understan
 ding the origin of these objects.  I will begin by describing the latest
  measurements of various properties ofbrown dwarfs\, including their ini
 tial mass function\, binarity\, circumstellar environment (disks\, accre
 tion\, envelopes)\, and spatial and velocity distributions at birth\, an
 d I will compare these data to the predictions of theories for the forma
 tion of brown dwarfs. I willthen describe the observed properties of wid
 e planetary-mass companions and the resulting constraints on their forma
 tion.
LAST-MODIFIED:20100714T110000Z
LOCATION:134 Astronomy
CATEGORIES:Colloquia
CONTACT:You-Hua Chu 333-3090
ORGANIZER:yhchu@astro.illinois.edu
URL:http://illinois.edu/calendar/detail/650?key=2000010120000101174821
UID:174821@illinois.edu
END:VEVENT
END:VCALENDAR