We present a point source catalog from 771 square degrees of the South Pole Telescope Sunyaev Zel'dovich (SPT-SZ) survey at 95, 150, and 220 GHz. We detect 1545 sources above 4.5 sigma significance in at least one band. Based on their relative brightness between survey bands, we classify the sources into two populations, one dominated by synchrotron emission from active galactic nuclei, and one dominated by thermal emission from dust-enshrouded star-forming galaxies. We find 1238 synchrotron and 307 dusty sources. We cross-match all sources against external catalogs and find 189 unidentified synchrotron sources and 189 unidentified dusty sources. The dusty sources without counterparts are good candidates for high-redshift, strongly lensed submillimeter galaxies. We derive number counts for each population from 1 Jy down to roughly 9, 5, and 11 mJy at 95, 150, and 220 GHz. We compare these counts with galaxy population models and find that none of the models we consider for either population provide a good fit to the measured counts in all three bands. The disparities imply that these measurements will be an important input to the next generation of millimeter-wave extragalactic source population models.
@article{arxiv.1306.3470,
title = {Extragalactic millimeter-wave point source catalog, number counts and statistics from 771 square degrees of the SPT-SZ Survey},
author = {L. M. Mocanu and T. M. Crawford and J. D. Vieira and K. A. Aird and M. Aravena and J. E. Austermann and B. A. Benson and M. Béthermin and L. E. Bleem and M. Bothwell and J. E. Carlstrom and C. L. Chang and S. Chapman and H-M. Cho and A. T. Crites and T. de Haan and M. A. Dobbs and W. B. Everett and E. M. George and N. W. Halverson and N. Harrington and Y. Hezaveh and G. P. Holder and W. L. Holzapfel and S. Hoover and J. D. Hrubes and R. Keisler and L. Knox and A. T. Lee and E. M. Leitch and M. Lueker and D. Luong-Van and D. P. Marrone and J. J. McMahon and J. Mehl and S. S. Meyer and J. J. Mohr and T. E. Montroy and T. Natoli and S. Padin and T. Plagge and C. Pryke and A. Rest and C. L. Reichardt and J. E. Ruhl and J. T. Sayre and K. K. Schaffer and E. Shirokoff and H. G. Spieler and J. S. Spilker and B. Stalder and Z. Staniszewski and A. A. Stark and K. T. Story and E. R. Switzer and K. Vanderlinde and R. Williamson},
journal= {arXiv preprint arXiv:1306.3470},
year = {2015}
}