Formation of sdB-stars via common envelope ejection by substellar companions M. Kramer, F. R. N. Schneider, S. T. Ohlmann, S. Geier, V. Schaffenroth, R. Pakmor and F. K. Röpke A&A, 642 (2020) A97 Published online: 09 October 2020 DOI: 10.1051/0004-6361/202038702