Abstract

We present new sub-millimeter data of Herbig Ae/Be stars, taken with single dish telescopes in Chile, in order to search for continuum and gas emission around these system. We detect 12CO emission around at least two systems, as well as the 870 micron continuum. The new sub-mm data is input into the radiative transfer code MCFOST (Pinte et al. 2006) to produce disk models that fit the entire SEDs. The models reproduce well the observed CO line profiles, constraining the properties of the circumstellar disks.

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