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Primordial or Secondary? Testing models of debris disk gas with ALMA
Gianni Cataldi, Yuri Aikawa, Kazunari Iwasaki +13
The origin and evolution of gas in debris disks is still not well understood. Secondary gas production from cometary material or a primordial origin have been proposed. So far, obs…
Inner edges of planetesimal belts: collisionally eroded or truncated?
Amaia Imaz Blanco, Sebastian Marino, Luca Matrà +9
The radial structure of debris discs can encode important information about their dynamical and collisional history. In this paper we present a 3-phase analytical model to analyse…
Millimeter Dust Emission and Planetary Dynamics in the HD 106906 System
Anna Fehr, A. Meredith Hughes, Rebekah I. Dawson +10
Debris disks are dusty, optically thin structures around main sequence stars. HD 106906AB is a short-period stellar binary, host to a wide separation planet, HD 106906b, and a debr…
Lack of other molecules in CO-rich debris discs: is it primordial or secondary gas?
Grigorii V. Smirnov-Pinchukov, Attila Moór, Dmitry A. Semenov +5
The nature of the gas in CO-rich debris discs remains poorly understood, as it could either be a remnant from the earlier Class II phase or of secondary origin, driven by the destr…
From scattered-light to millimeter emission: A comprehensive view of the Gyr-old system of HD 202628 and its eccentric debris ring
Virginie Faramaz, John Krist, Karl R. Stapelfeldt +13
We present here new observations of the eccentric debris ring surrounding the Gyr-old solar-type star HD 202628: at millimeter wavelengths with ALMA, at far-infrared wavelengths wi…
New millimeter CO observations of the gas-rich debris disks 49 Cet and HD 32297
Attila Moór, Quentin Kral, Péter Ábrahám +7
Previous observations revealed the existence of CO gas at nearly protoplanetary level in several dust-rich debris disks around young A-type stars. Here we used the ALMA 7m-array to…