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52 papers · 1 filter
The Formation of Close Binary Systems by Dynamical Interactions and Orbital Decay
Matthew R. Bate, Ian A. Bonnell, Volker Bromm
We present results from the first hydrodynamical star formation calculation to demonstrate that close binary stellar systems (separations $\lsim 10$ AU) need not be formed directly…
The Formation of a Star Cluster: Predicting the Properties of Stars and Brown Dwarfs
Matthew R. Bate, Ian A. Bonnell, Volker Bromm
We present results from the largest numerical simulation of star formation to resolve the fragmentation process down to the opacity limit. The simulation follows the collapse and f…
Spatial study with the VLT of a new resolved edge-on circumstellar dust disk discovered at the periphery of the rho Ophiuchi dark cloud
N. Grosso, J. Alves, K. Wood +3
We report the discovery in NIR with SofI at the NTT of a resolved circumstellar dust disk around a 2MASS source at the periphery of the rho Ophiuchi dark cloud. We present follow-u…
Fireball Models for Flares in AE Aquarii
K. J. Pearson, Keith Horne, Warren Skidmore
We examine the flaring behaviour of the cataclysmic variable AE~Aqr in the context of the `magnetic propeller' model for this system. The flares are thought to arise from collision…
The effect of cooling on the global stability of self-gravitating protoplanetary discs
W. K. M. Rice, P. J. Armitage, M. R. Bate +1
Using a local model Gammie (2001) has shown that accretion discs with cooling times t_cool <= 3/Omega fragment into gravitationally bound objects, while those with cooling times t_…
Hipparcos red stars in the HpV_{T2} and VI_C systems
I. Platais, D. Pourbaix, A. Jorissen +6
For Hipparcos M, S, and C spectral type stars, we provide calibrated instantaneous (epoch) Cousins color indices using newly derived photometry. Three new sets of…