tokens: This material is based upon work supported by the National Science Foundation under grant AST-1614018 to C.W.M. and grants AST-1515876 and AST-1814440 to C.S.K. COSMOGRAIL is made possible thanks to the continuous work of all observers and technical staff obtaining the monitoring observations, in particular, at the Swiss Leonhard Euler telescope at La Silla Observatory, which is supported by the Swiss National Science Foundation. V.B. and F.C. are also supported by the Swiss National Science Foundation (SNSF). This work is partly based on observations obtained with the Small and Moderate Aperture Research Telescope System (SMARTS) 1.3 m, which is operated by the SMARTS Consortium. Thanks are due to V. Motta for helpful discussions about black hole masses and to R. Witt for many hours of help with the USNA High Performance Computing Cluster.
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