Search for 511 keV emission in satellite galaxies of the Milky Way with INTEGRAL/SPI Thomas Siegert, Roland Diehl, Aaron C. Vincent, Fabrizia Guglielmetti, Martin G. H. Krause and Celine Boehm A&A, 595 (2016) A25 Published online: 24 October 2016 DOI: 10.1051/0004-6361/201629136