The Next Generation X-ray Galaxy Survey with eROSITA

We thank the referee for helpful suggestions that improved the clarity of this manuscript. We gratefully acknowledge Violet Replicon for her contributions to this work, Mackenzie Jones for sharing code and data on AGN fractions, Thomas Reiprich for providing useful suggestions that significantly improved the analysis, and Philipp Weber for useful discussions and provision of some of the SIMPUT catalogues provided here. We acknowledge funding support from NASA GSFC through its Internal Research And Development (IRAD) program. This work was partially funded by the Bundesministerium fur Wirtschaft und Technologie based on a resolution of the German Parliament through Deutsches Zentrum fur Luft- und Raumfahrt grant 50 QR 1603. We acknowledge use of public data from the Sloan Digital Sky Survey. Funding for SDSSIII has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, and the U.S. Department of Energy Office of Science. The SDSS-III website is http://www.sdss3.org/. This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This research has made use of the NASA/IPAC Extragalactic Database (NED) which\r\nis operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.