Five WC9 stars discovered in the AAO/UKST Hα survey

We report the discovery of 5 massive Wolf-Rayet (WR) stars resulting from a programme of follow-up spectroscopy of candidate emission line stars in the AAO/UKST Southern Galactic Plane Hsurvey. The 6195-6775 ˚ A spectra of the stars are presented and discussed. A WC9 class is assigned to all 5 stars through comparison of their s pectra with those of known late- type WC stars, bringing the known total number of Galactic WC9 stars to 44. Whilst three of the five WC9 stars exhibit near infrared (NIR) excesses cha racteristic of hot dust emission - as seen in the great majority of known WC9 stars - we find that t wo of the stars show no discernible evidence of such excesses. This increases the number of known WC9 stars without NIR excesses to 7. Reddenings and distances for all 5 stars are estimated.