BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Kinematics of the Milky Way disc from SEGUE - Martin C. Smith\, Io
 A
DTSTART:20090323T160000Z
DTEND:20090323T170000Z
UID:TALK17466@talks.cam.ac.uk
CONTACT:Martin C. Smith
DESCRIPTION:We use the recently compiled Stripe 82 catalogue to study the 
 kinematics of solar neighbourhood stars. We develop a method for calculati
 ng the halo contamination in a sample of stars using the distribution of r
 otational velocities. We then assume literature values for the properties 
 of the halo and study the kinematics of the disc in isolation\, as a funct
 ion of position and metallicity. For stars with [Fe/H] > −0.5 we measure
  sigma_z / sigma_R = 0.63 \\pm 0.03\, in good agreement with the value pre
 dicted by models of heating by spiral arms and molecular clouds. We presen
 t new measurements of the tilt of the velocity ellipsoid for three differ
 ent ranges in metallicity. We study the asymmetric drift and attempt to mo
 del it using a relation derived from the Jeans’ equations and parameters
  calculated from our data.
LOCATION:HCR\, IoA
END:VEVENT
END:VCALENDAR