TolTEC/LMT Extragalactic Legacy Surveys: Completing our Census of Dust-Obscured Star Formation

Millimeter wavelengths are uniquely suited to measure the dust-obscured star formation in galaxies out to the highest redshifts. While previous millimeter surveys have been limited to the most extreme star forming galaxies, the 50-meter Large Millimeter Telescope can push to much fainter galaxies, measuring the dust-obscured star formation in typical, main-sequence galaxies out to the epoch of reionization. Coupled with TolTEC, a revolutionary new camera for the LMT, allows surveys over large areas of the cosmic web down with a spatial resolution of 5 arcseconds. From 2019-2021, TolTEC/LMT will conduct two public extragalactic legacy surveys simultaneous at three wavelengths; 1.1, 1.4 and 2.1mm. The Ultra-Deep Survey of Star-forming Galaxies (nominally ~1 sq. deg) is a confusion-limited survey which links the Luminous Infrared Galaxy (LIRG) population from redshifts 2-10 directly to their optical counterparts to determine how massive galaxies build up dust/metals and stars over cosmic time. The Large Scale Structure Survey (nominally 50-100 sq. deg) probes the relationship between the spatial distribution of dusty star forming galaxies and large scale structure, and provides a detailed view of clusters and their substructure via the Sunyaev-Zeldovich (SZ) effect. More details on TolTEC can be found on our website: http://toltec.astro.umass.edu