The Dusty Disk around VV Serpens

We havecarried out observationsat millimeter and centimeterwavelengths towardVV Ser using the Plateau deBure Interferometer and the Very Large Array. This allows us to compute the SED from near infrared to centimeter wave- lengths.Themodelingofthe fullSEDhasprovidedinsightintothe dustpropertiesand a moreaccuratevalue ofthe disk mass. The mass of dust in the disk around VV Ser is found to be about 4 ; 10 5 M , i.e., 400 times larger than previous estimates. Moreover, the SED can only be accounted for assuming dust stratification in the vertical direction across the disk. The existence of small grains (0.25–1 m) in the disk surface is required to explain the emission at near- and mid- infrared wavelengths. The fluxes measured at millimeter wavelengths imply that the dust grains in the midplane have grown up to very large sizes, at least to some centimeters