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8 papers · 2 filters
On the theory of disc photoevaporation
James E. Owen, Cathie J. Clarke, Barbara Ercolano
We discuss a hydrodynamical model for the dispersal of protoplanetary discs around young, low mass (<1.5 M_sun) stars by photoevaporation from the central object's energetic radiat…
Spatial variation of the cooling lines in the Orion Bar from Herschel/PACS
J. Bernard-Salas, E. Habart, H. Arab +8
We present spatially resolved Herschel/PACS observations of the Orion Bar. We have characterise the emission of the far-infrared fine-structure lines of [CII] (158um), [OI] (63 and…
On the Dynamics and Tidal Dissipation Rate of the White Dwarf in 4U 1820-30
Snezana Prodan, Norman Murray
It has been suggested that the 170 day period in the light curve of the low mass X-ray binary 4U 1820-30 arises from the presence of a third body with a large inclination to the bi…
The Herschel view of massive star formation in G035.39--00.33: Dense and cold filament of W48 undergoing a mini-starburst
Q. Nguyen Luong, F. Motte, M. Hennemann +29
The filament IRDC G035.39--00.33 in the W48 molecular complex is one of the darkest infrared clouds observed by \textit{Spitzer}. It has been observed by the PACS (70 and 160\,$\mi…
The Evolution of a Double Diffusive Magnetic Buoyancy Instability
Lara J. Silvers, Geoffrey M. Vasil, Nicholas H. Brummell +1
Recently, Silvers, Vasil, Brummell, & Proctor (2009), using numerical simulations, confirmed the existence of a double diffusive magnetic buoyancy instability of a layer of horizon…
Migration then assembly: Formation of Neptune mass planets inside 1 AU
Brad M. S. Hansen, Norm Murray
We demonstrate that the observed distribution of `Hot Neptune'/`Super-Earth' systems is well reproduced by a model in which planet assembly occurs in situ, with no significant migr…