Detecting Halo Streams with GAIA
Astrophysics
2007-05-23 v1
Abstract
We investigate what the proposed ESA astrometric satellite GAIA will reveal by observing the halo of the Milky Way. Specifically, we look for halo streams which are the signatures left by the merging/accretion events experienced by a typical galaxy like the Milky Way. We run numerical simulations of the disruption of satellite galaxies in a Galactic potential to generate artificial GAIA halo catalogs. We recover the streams by searching for peaks in angular momentum space.
Keywords
Cite
@article{arxiv.astro-ph/9811109,
title = {Detecting Halo Streams with GAIA},
author = {Amina Helmi and HongSheng Zhao and P. Tim de Zeeuw},
journal= {arXiv preprint arXiv:astro-ph/9811109},
year = {2007}
}
Comments
5 pages, 3 eps figures, uses paspconf.sty. Poster contribution to appear in The Galactic Halo: Bright Stars and Dark Matter, Proceedings of the Third Stromlo Symposium, eds. B.K. Gibson, T.S. Axelrod, M.E. Putman (ASP Conference Series)