CARBON STARS IN THE HALO OF THE MAGELLANIC CLOUDS - IDENTIFICATION AND RADIAL-VELOCITY DATA

We present the current status of our ongoing cool carbon star survey i n the halo of the Magellanic Clouds. Candidate cool carbon stars were identified from APM measures of pairs of UK Schmidt Telescope B-J and R survey plates. Intermediate resolution spectroscopy on the duPont Te lescope, Las Campanas, was used to simultaneously verify the nature of the candidates, late M-type giants or AGE carbon stars, and to derive their radial velocity. Coordinates, finding charts and radial velocit y data for 392 spectroscopically identified cool carbon stars distribu ted out to angular distances of 10 degrees from the Cloud optical cent res are given. Radial velocities were also obtained for 133 known carb on stars in the Large Magellanic Cloud, in the inter-Cloud region, in the wing of the Small Magellanic Cloud and in a few SMC star clusters. These intermediate-age carbon stars define ideal kinematic test parti cles to investigate recent dynamical interactions between the Galaxy-L MC-SMC system and in particular the origin of the morphological distur bances seen in the SMC and parts of the LMC, the origin of the Magella nic Stream and the total mass of the LMC.