HIGH RYDBERG STATE CARBON RECOMBINATION LINES TOWARD CASSIOPEIA A - 332 MHZ VLA OBSERVATIONS AND COMPARISON WITH H-I AND MOLECULAR LINES

We present observations of the C270alpha carbon recombination line, 21 cm neutral hydrogen line and (CO)-C-12 (J = 1 --> 0) molecular line t oward Cas A. A comparison of the distribution of recombination line op tical depths over the face of Cas A with that of H I optical depths an d molecular line emission favors the association of C270alpha regions with H I rather than molecular clouds. The association makes it possib le to self-consistently determine several physical parameters of the c louds by combining the recombination line and 21 cm H I measurements.