The Large-scale Structure of the Halo of the Andromeda Galaxy. II. Hierarchical Structure in the Pan-Andromeda Archaeological Survey
McConnachie, Alan W; Ibata, Rodrigo A.; Martin, Nicolas F; Ferguson, Annette; Collins, Michelle M. L.; Gwyn, Stephen; Irwin, Mike; Lewis, Geraint Francis; Mackey, Dougal; Davidge, Tim; Arias, Veronica; Tanvir, Nial R; Babul, Arif; Bate, Nicholas F; Dotter, Aaron; Navarro, J F; Puzia, Thomas H; Widrow, L. M.
The Pan-Andromeda Archaeological Survey is a survey of >400 square degrees centered on the Andromeda (M31) and Triangulum (M33) galaxies that has provided the most extensive panorama of an L ∗ galaxy group to large projected galactocentric radii. Here, we collate and summarize the current status of our knowledge of the substructures in the stellar halo of M31, and discuss connections between these features. We estimate that the 13 most distinctive substructures were produced by at least 5...[Show more]
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|Source:||The Astrophysical Journal|
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