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The extensive age gradient of the Carina dwarf galaxy
Giuseppina Battaglia, Michael Irwin, Eline Tolstoy +2
The evolution of small systems such as dwarf spheroidal galaxies (dSph) is likely to have been a balance between external environmental effects and internal processes within their…
The Star Formation & Chemical Evolution History of the Sculptor Dwarf Spheroidal Galaxy
T. J. L. de Boer, E. Tolstoy, V. Hill +6
We have combined deep photometry in the B,V and I bands from CTIO/MOSAIC of the Sculptor dwarf spheroidal galaxy, going down to the oldest Main Sequence Turn-Offs, with spectroscop…
The ancient stellar population of M32: RR Lyr Variable stars confirmed
G. Fiorentino, R. Contreras Ramos, E. Tolstoy +2
Using archival multi--epoch ACS/WFC images in the F606W and F814W filters of a resolved stellar field in Local Group dwarf elliptical galaxy M32 we have made an accurate Colour-Mag…