COOL-LAMPS IV: A Sample of Bright Strongly-Lensed Galaxies at 3 < Z < 4

We report the discovery of five bright, strong gravitationally lensed galaxies at 3 < z < 4: COOL J0101+2055 (z = 3.459), COOL J0104-0757 (z = 3.480), COOL J0145+1018 (z = 3.310), COOL J0516-2208 (z = 3.549), and COOL J1356+0339 (z = 3.753). These galaxies have magnitudes of r (AB), z (AB) < 21.81 mag and are lensed by galaxy clusters at 0.26 < z < 1. This sample nearly doubles the number of known bright lensed galaxies with extended arcs at 3 < z < 4. We characterize the lensed galaxies using ground-based grz/giy imaging and optical spectroscopy. We report model-based magnitudes and derive stellar masses, dust content, and star formation rates via stellar population synthesis modeling. Building lens models based on ground-based imaging, we estimate source magnifications ranging from similar to 29 to similar to 180. Combining these analyses, we derive demagnified stellar masses in the range log10(M*/M circle dot)similar to 9.69-10.75 log10(SFR/(M circle dot yr-1))similar to 0.39-1.46