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2006MNRAS.369..143M - Mon. Not. R. Astron. Soc., 369, 143-155 (2006/June-2)
Triggered star formation in bright-rimmed clouds: the Eagle nebula revisited.
MIAO J., WHITE G.J., NELSON R., THOMPSON M. and MORGAN L.
Abstract (from CDS):
The application of this newly developed model to the structure of the middle Eagle nebula finger suggests that the shock induced by the ionizing radiation at the front side of the head precedes an ionization front moving towards the centre of the core, and that the core at the fingertip is at a transition stage evolving toward a state of induced star formation. The dynamical evolution of the velocity field of the simulated cloud structure is discussed to illustrate the role of the self-gravity and the different cloud morphologies which appear at different stages in the evolutionary process of the cloud. The motion of the ionization front and the evaporating gas are also investigated. The modelled gas evaporation rate is consistent with that of other current models and the density, temperature and chemical profiles are in agreement with the observed values.
The relative lifetimes of different simulated cloud morphologies suggest a possible answer to the question of why more bright-rimmed clouds are observed to possess a flat-core than an elongated-core morphology.
Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS
Journal keyword(s): radiative transfer - stars: formation - ISM: evolution - Hii regions - ISM: kinematics and dynamics
Simbad objects: 1
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