Clumps identified in z<0.06 SDSS Stripe 82 sample

A majority of the effort to study clumps has been focused at high redshifts, and local clump studies have often suffered from small sample sizes. In this work, we present an analysis of clump properties in the local universe, and for the first time, performed with a statistically significant sample.

With the help of the citizen science-powered Galaxy Zoo: Hubble project, we select a sample of 92 z<0.06 clumpy galaxies in Sloan Digital Sky Survey Stripe 82 galaxies. Within this sample, we identify 543 clumps using a contrast-based image analysis algorithm and perform photometry as well as estimate their stellar population properties. The overall properties of our z<0.06 clump sample are comparable to the high-redshift clumps.