BELTRAN SOROLLA, MARIA TERESAMARIA TERESABELTRAN SOROLLAde Wit, W. J.W. J.de Wit2020-05-112020-05-1120160935-4956http://hdl.handle.net/20.500.12386/24687An observational review is provided of the properties of accretion disks around young stars. It concerns the primordial disks of intermediate- and high-mass young stellar objects in embedded and optically revealed phases. The properties were derived from spatially resolved observations and, therefore, predominantly obtained with interferometric means, either in the radio/(sub)millimeter or in the optical/infrared wavelength regions. We make summaries and comparisons of the physical properties, kinematics, and dynamics of these circumstellar structures and delineate trends where possible. Amongst others, we report on a quadratic trend of mass accretion rates with mass from T Tauri stars to the highest mass young stellar objects and on the systematic difference in mass infall and accretion rates.ELETTRONICOenArticle10.1007/s00159-015-0089-z2-s2.0-84954451489000368075900002https://link.springer.com/article/10.1007/s00159-015-0089-z2016A&ARv..24....6BFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_4 Formation of stars and planets