Testing the initial conditions and dynamical evolution of star clusters using Gaia - I
arXiv:1201.2889 · doi:10.1111/j.1365-2966.2012.20557.x
Abstract
We investigate how the properties of escaping stars are related to the initial conditions of their birth clusters. We find that the number of escaping stars, their spatial distribution, and their kinematics show a dependence on the initial conditions of the host cluster (substructure and virial ratio). Thus the properties of escaping stars can be used to inform us of the initial conditions of star formation, and also provide a window into the dynamical history of star clusters. The ESA Gaia mission will make observations of the positions and proper motions of these escaping stars at the required accuracy to allow us to investigate the dynamical evolution of local star clusters and provide an important insight into the initial conditions of star formation.
4 pages, 2 figures. Accepted for publication in MNRAS Jan 2012
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- Dynamical evolution of star forming regions - II. Basic kinematics
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- Photometric, kinematic and variability study in the young open cluster NGC 1960
- Dynamical evolution of star-forming regions: III. Unbound stars and predictions for Gaia
- External photoevaporation of protoplanetary discs: does location matter?
- Stars on the run: escaping from stellar clusters
- Reaction of Massive Clusters to Gas Expulsion - The cluster density dependence
- From birth associations to field stars: mapping the small-scale orbit distribution in the Galactic disc
- Spatial differences between stars and brown dwarfs: a dynamical origin?
- Double trouble: Gaia reveals (proto)-planetary systems that may experience more than one dense star-forming environment
- Gaia view of low-mass star formation