1. An Accurate Timescale for Star Formation and Chemical Enrichment of the Sculptor dSph
- Author
-
de Boer, T. J. L., Tolstoy, E., Saha, A., Olsen, K., Koleva, M, Prugniel, P, Vauglin, and Astronomy
- Subjects
Physics ,education.field_of_study ,Radial gradient ,Star formation ,Milky Way ,Metallicity ,Population ,General Engineering ,Metallicity distribution function ,Astronomy ,Astronomy and Astrophysics ,Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Imaging data ,Space and Planetary Science ,Astrophysics::Solar and Stellar Astrophysics ,Astrophysics::Earth and Planetary Astrophysics ,education ,Astrophysics::Galaxy Astrophysics - Abstract
The Sculptor dwarf Spheroidal is a Milky Way satellite with a dominant old (>10 Gyr) population that displays at least two distinct stellar populations. We present new sensitive imaging data from CTIO/MOSAIC and make a detailed study of the stellar populations of Sculptor, including the main sequence turnoff (MSTO) properties. We present the Star Formation History (SFH) and Metallicity Distribution Function (MDF) of the Sculptor dSph and find that a well-defined radial gradient is present not only in metallicity but now also in age.
- Published
- 2011