---------------------

 Title: 

    Millimeter/radio dust observations

 ---------------------

 

 ---------------------

 Authors: 
    L. Testi, Osservatorio Astrofisico di Arcetri

  ---------------------

 

 ---------------------

Abstract:

Millimeter continuum observations allow us to probe the dust component of circumstellar disks. At millimeter wavelengths the thermal emission from dust grains is optically thin throughout most of the disk allowing us to probe the mass of the disk and the dust properties and distribution on the disk midplane, where planet formation is thought to occurr.  I will discuss the properties of circumstellar disks across the stellar mass range as derived from millimeter interferometric observations. I will also discuss how millimeter observations also allow us to probe the evolution of circumstellar disks properties as a function of the age of the system setting the stage for the planets fromation process.
  ---------------------