## Identification of moving groups from a sample of B, A and F type stars
An algorithm to find moving groups has been developed and applied to a sample of 1924 B, A, and F main sequence stars, basically extracted from the Hipparcos Input Catalogue. This algorithm uses a non-parametric kernel estimator to describe the stellar distribution in a 4-dimensional space of velocities and age, although it can be used to detect the real clustering structure in an n-dimensional space automatically. Four moving groups near the Sun (Pleiades, Sirius, Hyades, IC2391)
have been identified without assuming any
## Contents- 1. Introduction
- 2. The sample
- 3. The uneven velocity field
- 4. The method
- 5. Results and discussion
- 6. Conclusions
- Acknowledgements
- References
© European Southern Observatory (ESO) 1997 Online publication: July 8, 1998 |