Detecting Halo Streams with GAIA
نویسندگان
چکیده
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.
منابع مشابه
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ESA’s Global Astrometric Interferometer for Astrophysics (GAIA) holds the promise of mapping out the detailed phase space structure of the Galactic halo by providing unprecedented annual proper motion and parallax of 1–10μas astrometric accuracy (Gilmore et al. 1998). Unlike NASA’s Space Interferometry Mission (SIM), which will achieve similar accuracies but is a pointed instrument, GAIA will b...
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