Browsing Chapman, Scott by Author "Fardal, Mark A."

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  • A Bayesian Approach to Locating the Red Giant Branch Tip Magnitude (Part II); Distances to the Satellites of M31 

    Conn, Anthony R., Rodrigo A. Ibata, Geraint F. Lewis, Quentin A. Parker, et al. 2012. "A Bayesian Approach to Locating the Red Giant Branch Tip Magnitude (Part II); Distances to the Satellites of M31." The Astrophysical Journal 758:11.
    In `A Bayesian Approach to Locating the Red Giant Branch Tip Magnitude (PART I),' a new technique was introduced for obtaining distances using the TRGB standard candle. Here we describe a useful complement to the technique ...

  • Unearthing Foundations of a Cosmic Cathedral: Searching the Stars for M33's Halo 

    Cockcroft, Robert, Alan W. McConnachie, William E. Harris, Rodrigo Ibata, et al. 2012. "Unearthing Foundations of a Cosmic Cathedral: Searching the Stars for M33's Halo." 428(2): 1248-1262
    We use data from the Pan-Andromeda Archaeological Survey (PAndAS) to search for evidence of an extended halo component belonging to M33 (the Triangulum Galaxy). We identify a population of red giant branch (RGB) stars at ...