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Density variations in the NW star stream of M31

Carlberg, R G; Richer, Harvey B; McConnachie, Alan W; Irwin, M. J.; Ibata, Rodrigo A; Dotter, Aaron; Chapman, S. C.; Fardal, Mark; Ferguson, A. M. N.; Lewis, Geraint Francis; Navarro, J F; Puzia, Thomas H; Valls-Gabuad, David


The Pan Andromeda Archeological Survey (PAndAS) CFHT Megaprime survey of the M31-M33 system has found a star stream which extends about 120 kpc NW from the center of M31. The great length of the stream, and the likelihood that it does not significantly intersect the disk of M31, means that it is unusually well suited for a measurement of stream gaps and clumps along its length as a test for the predicted thousands of dark matter sub-halos. The main result of this paper is that the density of...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
Source: Astrophysical Journal, The
DOI: 10.1088/0004-637X/731/2/124


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