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We have acquired sub-millimeter observations of 33 fields containing 37Herbig Ae/Be (HAEBE) stars or potential HAEBE stars, including SCUBA maps ofall but two of these stars. Nine target stars show extended dust emission. Theother 18 are unresolved, suggesting that the dust envelopes or disks aroundthese stars are less than a few arcseconds in angular size. In several cases wefind that the strongest sub-millimeter emission originates from younger,heavily embedded sources rather than from the HAEBE star, which means thatprevious models must be viewed with caution. These new data, in combinationwith far-infrared flux measurements available in the literature, yield SEDsfrom far-infrared to millimeter wavelengths for all the observed objects.Isothermal fits to these SEDs demonstrate excellent fits, in most cases, to theflux densities longward of 100 {\mu}m. We find that a smaller proportion ofB-type stars than A and F-type stars are surrounded by circumstellar disks,suggesting that disks around B stars dissipate on shorter time scales thanthose around later spectral types. Our models also reveal that the mass of thecircumstellar material and the value of beta are correlated, with low massescorresponding to low values of beta. Since low values of beta imply large grainsizes, our results suggest that a large fraction of the mass in low-betasources is locked up in very large grains. Several of the isolated HAEBE starshave disks with very flat sub-millimeter SEDs. These disks may be on the vergeof forming planetary systems.

A sub-millimeter Mapping Survey of Herbig AeBe Stars