The ACS Virgo Cluster Survey. I. Introduction to the Survey

Details The ACS Virgo Cluster Survey. I. Introduction to the Survey The ACS Virgo Cluster Survey. I. Introduction to the Survey

2004-04-06

arxiv.org/abs/astro-ph/0404138v1

Astrophys.J.Suppl. 153 (2004) 223

Astronomy and Astrophysics

Astrophysics

44 pages, 17 postscript figures. Also available at http://www.physics.rutgers.edu/~pcote/acs/publications.html

Scientific paper

10.1086/421490

The Virgo Cluster is the dominant mass concentration in the Local Supercluster and the largest collection of elliptical and lenticular galaxies in the nearby universe. In this paper, we present an introduction to the ACS Virgo Cluster Survey: a program to image, in the F475W and F850LP bandpasses (Sloan g and z), 100 early-type galaxies in the Virgo Cluster using the Advanced Camera for Surveys on the Hubble Space Telescope. We describe the selection of the program galaxies and their ensemble properties, the choice of filters, the field placement and orientation, the limiting magnitudes of the survey, coordinated parallel observations of 100 "intergalactic" fields with WFPC2, and supporting ground-based spectroscopic observations of the program galaxies. In terms of depth, spatial resolution, sample size and homogeneity, this represents the most comprehensive imaging survey to date of early-type galaxies in a cluster environment. We briefly describe the main scientific goals of the survey which include the measurement of luminosities, metallicities, ages, and structural parameters for the many thousands of globular clusters associated with these galaxies, a high-resolution isophotal analysis of galaxies spanning a factor of ~ 450 in luminosity and sharing a common environment, the measurement of accurate distances for the full sample of galaxies using the method of surface brightness fluctuations, and a determination of the three-dimensional structure of Virgo itself.

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