Ratio of black hole to galaxy mass of an extremely red dust-obscured galaxy at z = 2.52 K. Matsuoka, Y. Toba, M. Shidatsu, Y. Ueda, K. Iwasawa, Y. Terashima, M. Imanishi, T. Nagao, A. Marconi and W.-H. Wang A&A, 620 (2018) L3 Published online: 30 November 2018 DOI: 10.1051/0004-6361/201833943