Stellar winds and molecular clouds - Herbig Be and AE type stars

Data from J = 1-0 observations of CO and (C-13)O in 11 Ae and Be stars with nebulosity, obtained using cooled 80-120-GHz mixers with orthogonally polarized feeds on the 11-m radiotelescope at NRAO during Sept. 1981, are presented in tables and graphs and discussed. High-velocity emissions of the type associated with molecular outflows (MO) are found only for LkH-alpha 198 (where the MO is bipolar and of moderate velocity) and MWC 1080 (where the MO is powerful and apparently isentropic, the wing emission in the CO line extends over 25 km/s, and the stellar mass-loss rate is about 0.00001 solar mass/yr). The values of the parameter r of Cohen and Schwartz (1976), related to the presence of circumstellar material, are determined for the objects on the basis of published optical and IR data, and a correlation is found between r and MO. Since LkH-alpha 198 and MWC 1080 have been classified as types B3 and B0, respectively, it is concluded that they cannot be regarded as confirmed cases of intermediate-luminosity stars with MO.