Astronomy at UMIST is supported by PPARC. JVB would like to acknowledge the financial support of a PPARC studentship. The United Kingdom Infrared Telescope is operated by the Joint Astronomy Centre on behalf of the U.K. Particle Physics & Astronomy Research Council. The authors would like to thank UKIRT staff for their help and advice, particularly Tim Hawarden who carried out the observations in serviced mode.
© European Southern Observatory (ESO) 1999
Online publication: July 26, 1999