Program: GN-2021B-Q-105

We propose to follow-up known and newly discovered tidal disruption events (TDEs) in the optical, near-infrared (NIR), and sub-millimeter (sub-mm) to expand the sample of well-studied TDEs. Optical spectra give insight on the physical conditions present in TDEs throughout their evolution. NIR photometry at late-times probes nuclear dust in TDE host galaxies. Sub-mm measurements place constraints on the launching of an outflow/jet and the density profile in the circum-nuclear medium. Combined, these give detailed insight into TDE physics. While a largely theoretical concept just a decade ago, the observational study of TDEs has quickly grown with the advent of high-cadence all-sky surveys such as ASAS-SN, ATLAS, Pan-STARRS, and ZTF. The once sparsely sampled region of TDE parameter space is slowly being populated, but large gaps remain in our fundamental understanding of TDE physics itself. Most notably, the UV/optical emission mechanism is still a matter of vigorous debate in the literature. Without this key piece of knowledge, the promise of TDEs as a tool to study quiescent supermassive black holes (SMBHs) at cosmological distances, is currently stalled. The only way for TDEs to reach their full potential as probes of SMBHs is to expand our sample of well-studied TDEs, which requires extensive multi-wavelength follow-up.