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A simple model for the evolution of the dust population in protoplanetary disks
Context. The global size and spatial distribution of dust is an important ingredient in the structure and evolution of protoplanetary disks and in the formation of larger bodies, such as…
THE EFFECT OF LINE-OF-SIGHT TEMPERATURE VARIATION AND NOISE ON DUST CONTINUUM OBSERVATIONS
We investigate the effect of line-of-sight temperature variations and noise on two commonly used methods to determine dust properties from dust-continuum observations of dense cores. One method…
Radiation-hydrodynamic models of X-ray and EUV photoevaporating protoplanetary discs
We present the first radiation-hydrodynamic model of a protoplanetary disc irradiated with an X-ray extreme ultraviolet (X-EUV) spectrum. In a model where the total ionizing luminosity is divided…
Massive-Star Supernovae as Major Dust Factories
Observations of the Type II supernova 2003gd show that dust formation in supernova ejecta can be efficient and that massive-star supernovae could have been major dust producers throughout the history of the universe.
On the theory of disc photoevaporation
We discuss a hydrodynamical model for the dispersal of protoplanetary discs around young, low-mass (<1.5 M⊙) stars by photoevaporation from the central object’s energetic radiation, which considers…
Protoplanetary disc evolution and dispersal: the implications of X-ray photoevaporation
We explore the role of X-ray photoevaporation in the evolution and dispersal of viscously evolving T Tauri discs. We show that the X-ray photoevaporation wind rates scale linearly with X-ray…
Before the first supernova: combined effects of H II regions and winds on molecular clouds
IAB acknowledges funding from the European Research Council for the FP7 ERC advanced grant project ECOGAL. JN would like to acknowledge the German Deutsche Forschungsgemeinschaft, DFGPR 569/9-1.
X-Ray-Irradiated Protoplanetary Disk Atmospheres. I. Predicted Emission-Line Spectrum and Photoevaporation
We present mocassin two-dimensional photoionization and dust radiative transfer models of a prototypical T Tauri disk irradiated by X-rays from the young pre-main-sequence star. The calculations…
Flows of gas through a protoplanetary gap
Observations of diffuse CO gas inside the gap, with denser HCO+ gas along gap-crossing filaments are reported, which is sufficient to maintain accretion onto the star at the present rate.
The dusty MOCASSIN: fully self-consistent 3D photoionization and dust radiative transfer models
We present the first 3D Monte Carlo (MC) photoionization code to include a fully self-consistent treatment of dust radiative transfer (RT) within a photoionized region. This is the latest development…