TOUCHING THE VOID: A STRIKING DROP IN STELLAR HALO DENSITY BEYOND 50 kpc

We use A-type stars selected from Sloan Digital Sky Survey data release 9 photometry to measure the outer slope of the Milky Way stellar halo density profile beyond 50 kpc. A likelihood-based analysis is employed that models the ugr photometry distribution of blue horizontal branch and blue straggle...

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Veröffentlicht in:	The Astrophysical journal 2014-05, Vol.787 (1), p.1-16
Hauptverfasser:	Deason, A J, Belokurov, V, Koposov, S E, Rockosi, C M
Format:	Artikel
Sprache:	eng
Schlagworte:	Accretion Alpha rays Astronomical models ASTROPHYSICS, COSMOLOGY AND ASTRONOMY COMPARATIVE EVALUATIONS COMPUTERIZED SIMULATION DENSITY DISTRIBUTION Halos MASS MILKY WAY PHOTOMETRY Slopes STARS
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