354 citations · 2.2k across the 23 of their papers we have counts for
4 papers · 2 filters
Substellar companions and isolated planetary mass objects from protostellar disc fragmentation
W. K. M. Rice, P. J. Armitage, I. A. Bonnell +3
Self-gravitating protostellar discs are unstable to fragmentation if the gas can cool on a time scale that is short compared to the orbital period. We use a combination of hydrodyn…
On the formation time scale and core masses of gas giant planets
W. K. M. Rice, Philip J. Armitage
Numerical simulations show that the migration of growing planetary cores may be dominated by turbulent fluctuations in the protoplanetary disk, rather than by any mean property of…
On the stability of self-gravitating protoplanetary discs
W. K. M. Rice, P. J. Armitage, I. A. Bonnell +1
It has already been shown, using a local model, that accretion discs with cooling times t_cool <= 3 Omega^-1 fragment into gravitationally bound objects, while those with cooling t…
Constraints on a planetary origin for the gap in GM Aurigae's protoplanetary disc
W. K. M. Rice, Kenneth Wood, P. J. Armitage +2
The unusual spectral energy distribution (SED) of the classical T Tauri star GM Aurigae provides evidence for the presence of an inner disc hole extending to several au. Using a co…