David, L. P. (Smithsonian Astrophysical Observatory Cambridge, MA, United States)
Arnaud, K. A. (Smithsonian Astrophysical Observatory Cambridge, MA, United States)
Forman, W. (Smithsonian Astrophysical Observatory Cambridge, MA, United States)
Jones, C. (Smithsonian Astrophysical Observatory Cambridge, MA, United States)