Follow-up of the neutron star bearing gravitational-wave candidate events S190425z and S190426c with MMT and SOAR

NSF [AST-1009863, AST-1714498]; NASA [NNX10AF62G, NNX15AE50G]; LSSTC, NSF [1829740]; Brinson Foundation; Moore Foundation; NASA through the NASA Hubble Fellowship [HST-HF2-51403.001-A]; Space Telescope Science Institute [NAS 5-26555]; Royal Astronomical Society Research Fellowship; National Science Foundation [AST-1814782]; Deutsche Forschungsgemeinschaft [GE2506/12-1]; National Aeronautics and Space Administration through Chandra award [DD8-19101A, DDT-18096A]; National Aeronautics Space Administration [NAS8-03060]; Office of the Provost; Office for Research; Northwestern University Information Technology; University of Arizona; Ministerio da Ciencia, Tecnologia, Inovacoes e Comunicacoes (MCTIC) do Brasil; Michigan State University (MSU)