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SCHOLARLY PUBLICATION ✓ Open Access

THE ACS NEARBY GALAXY SURVEY TREASURY

Julianne J. Dalcanton, Benjamin F. Williams, Anil C. Seth, Andrew E. Dolphin, Jon A. Holtzman, Keith D. Rosema, Evan D. Skillman, Andrew A. Cole, L. Girardi, Stephanie M. Gogarten, Igor D. Karachentsev, Knut A. G. Olsen, Daniel R. Weisz, Charlotte Christensen, K. C. Freeman, Karoline M. Gilbert, Carme Gallart, Jason Harris, P. W. Hodge, Roelof S. de Jong, V. E. Karachentseva, Mario L Mateo, Peter B. Stetson, Maritza Tavarez, Dennis Zaritsky, Fabio Governato, Thomas Quinn

📄 Abstract

The ACS Nearby Galaxy Survey Treasury (ANGST) is a systematic survey to establish a legacy of uniform multi-color photometry of resolved stars for a volume-limited sample of nearby galaxies (D14 million stars. In this paper we present the details of the sample selection, imaging, data reduction, and the resulting photometric catalogs, along with an analysis of the photometric uncertainties (systematic and random), for both the ACS and WFPC2 imaging. We also present uniformly derived relative distances measured from the apparent magnitude of the TRGB.

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