Detecting Halo Streams with GAIA

Details Detecting Halo Streams with GAIA Detecting Halo Streams with GAIA

1998-11-06

arxiv.org/abs/astro-ph/9811109v1

Astronomy and Astrophysics

Astrophysics

5 pages, 3 eps figures, uses paspconf.sty. Poster contribution to appear in The Galactic Halo: Bright Stars and Dark Matter, P

Scientific paper

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.

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