  Intermediate dispersion spectroscopic observations of 37 Herbig Ae/Be stars
reveal that the equivalent widths of their [OI] 6300A and Halpha emission
lines, are related to their near-infrared colours in the same fashion as the
T-Tauri stars. Such a correlation strongly supports the idea that the winds
from Herbig Ae/Be stars arise in the same manner as those from T-Tauri stars,
i.e. through accretion driven mass-loss. We also find that the [OI] 6300A line
luminosity correlates better with excess infrared luminosity than with stellar
luminosities, again supporting the idea that Herbig Ae/Be winds are accretion
driven. If one includes the lower mass analogues of the Herbig Ae/Be stars with
forbidden line emission, i.e. the classical T-Tauri stars, the correlation
between mass-loss rate and infrared excess spans 5 orders of magnitude in
luminosity and a range of masses from 0.5 M_sun to approximately 10 M_sun. Our
observations therefore extend the findings of Cohen et al. (1989) and Cabrit et
al. (1990) for low mass young stars and, taken in conjunction with other
evidence (Corcoran & Ray 1997a), strongly support the presence of circumstellar
disks around intermediate mass stars with forbidden line emission. An
implication of our findings is that the same outflow model must be applicable
to these Herbig Ae/Be stars and the classical T Tauri stars.
