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, using the Hubble Space Telescope (HST).
The survey includes:
- New observations with the Advanced Camera for Surveys (ACS), supplemented with archival data and new Wide Field Planetary Camera (WFPC2) imaging taken after the failure of ACS in January 2006.
- A well-defined volume out to ~4 Mpc that encompasses 69 galaxies in diverse environments, including close pairs, small & large groups, filaments, and truly isolated regions.
- Galaxies that include a nearly complete range of morphological types spanning a factor of ~104 in luminosity and star formation rate.
- Publicly released multi-color photometry containing over 34 million photometric measurements of > 14 million stars.