The intermediate Palomar Transient Factory (iPTF) has been undertaking the Census of the Local Universe (CLU) project to complete our survey of galaxies out to 200 Mpc. CLU deploys four contiguous narrow-band filters to search for extended, emission line (Hα) sources across 3π of the sky. The estimated 5σ limiting flux for a point source is 2×10-17 erg s-1 cm-2 (Rau et al., 2009), which corresponds to a star formation rate (SFR) of 10-3 M☉ yr-1 at a distance of 200 Mpc. Thus, the CLU galaxy catalog will capture 85% of the B-band light and 92% of the Hα luminosity out to 200 Mpc resulting in tens-of-thousands of newly discovered galaxies. We present the narrowband imaging characteristics, the criteria used for selecting galaxy candidates, and a sub-set of newly discovered galaxies that have been spectroscopically confirmed.
American Astronomical Society Meeting Abstracts #227
- Pub Date:
- January 2016