First confirmed ultra-compact dwarf galaxy in the NGC 5044 group Favio R. Faifer, Carlos G. Escudero, María C. Scalia, Analía V. Smith Castelli, Mark Norris, María E. De Rossi, Juan C. Forte and Sergio A. Cellone A&A, 599 (2017) L8 Published online: 07 March 2017 DOI: 10.1051/0004-6361/201730493