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ALMA observations of rho-Oph 102: grain growth and molecular gas in the disk around a young Brown Dwarf
L. Ricci, L. Testi, A. Natta +2
We present ALMA continuum and spectral line observations of the young Brown Dwarf rho-Oph 102 at about 0.89 mm and 3.2 mm. We detect dust emission from the disk at these wavelength…
Constraints on the Radial Variation of Grain Growth in the AS 209 Circumstellar Disk
Laura M. Pérez, John M. Carpenter, Claire J. Chandler +18
We present dust continuum observations of the protoplanetary disk surrounding the pre-main sequence star AS 209, spanning more than an order of magnitude in wavelength from 0.88 to…
Photoevaporation and spatial variation of grain sizes in Orion 114-426
Anna Miotello, Massimo Robberto, Marco A. C. Potenza +1
Deep HST broad-band images taken with ACS and WFPC2 of the giant ( AU diameter) dark silhouette proplyd 114-426 in the Orion Nebula show that this system is tilted, asym…
The effect of local optically thick regions in the long-wave emission of young circumstellar disks
L. Ricci, F. Trotta, L. Testi +3
Multi-wavelength observations of protoplanetary disks in the sub-millimeter continuum have measured spectral indices values which are significantly lower than what is found in the…
Fomalhaut debris disk emission at 7 millimeters: constraints on the collisional models of planetesimals
L. Ricci, L. Testi, S. T. Maddison +1
We present new spatially resolved observations of the dust thermal emission at 7 mm from the Fomalhaut debris disk obtained with the Australia Telescope Compact Array. These observ…