Stellar halo hierarchical density structure identification using (F)OPTICS

Author： Sans Fuentes S. A.   De Ridder J.   Debosscher J.  

Publisher： Edp Sciences

E-ISSN： 1432-0746|599|issue|A143-A143

ISSN： 0004-6361

Source： Astronomy & Astrophysics, Vol.599, Iss.issue, 2017-03, pp. : A143-A143

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Abstract

Context. The stellar halo holds some of the best preserved fossils of Galactic formation history that can be detected as overdensities. The detection and analysis of merger by-products within the halo enables the reconstruction of the accretion history of the Milky Way. Upcoming large-scale all-sky surveys such as Gaia and The Large Synoptic Survey Telescope (LSST) will provide a huge and rich data set, which at the same time poses challenges for automated halo debris detection.

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