Browsing Chapman, Scott by Author "Tanvir, Nial R."

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  • PAndAS' progeny: extending the M31 dwarf galaxy cabal 

    Richardson, Jenny C., Mike Irwin, Alan W. McConnachie, Nicolas F. Martin, et al. 2011. "PAndAS' progeny: extending the M31 dwarf galaxy cabal." The Astrophysical Journal 732 (2):76.
    We present the discovery of five new dwarf galaxies, Andromeda XXIII-XXVII, located in the outer halo of M31. These galaxies were found in the second year of data from the Pan-Andromeda Archaeological Survey (PAndAS) of ...

  • The stellar halo and outer disk of M33 

    McConnachie, Alan W., Scott C. Chapman, Rodrigo A. Ibata, Annette M. N. Ferguson, et al. 2006. "The stellar halo and outer disk of M33." The Astrophysical Journal 647(1): 25-L28
    We present first results from a Keck/DEIMOS spectroscopic survey of red giant branch (RGB) stars in M33. The radial velocity distributions of the stars in our fields are well described by three Gaussian components, ...