The ACS LCID Project: data reduction strategy

Details The ACS LCID Project: data reduction strategy The ACS LCID Project: data reduction strategy

2007-05-18

arxiv.org/abs/0705.2717v1

Astronomy and Astrophysics

Astrophysics

2 pages, 1 figure. To appear in the Proceedings of IAU Symposium 241: "Stellar Populations as Building Blocks of Galaxies", 10

Scientific paper

10.1017/S1743921307008502

During Cycle 14 a total of 113 HST orbits were secured to observe five isolated dwarf galaxies, namely Tucana, LGS3, LeoA, IC1613, and Cetus. The aim of the project is a full characterization of the stellar content of these galaxies, in term of their SFH, radial distributions, halo populations and variable stars. Deep (V~29) F475W, F814W data allowed us to fully sample all the evolutionary phases from the tip of the Red Giant Branch (RGB) to well below the old Main Sequence Turnoff (MSTO). Here we describe the observational design, and the reduction and calibration strategy adopted. A comparison of the results obtained using two different packages, ALLFRAME and Dolphot, is presented.

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