The galactic unclassified B[e] star HD 50138 - I. A possible new shell phase M. Borges Fernandes, M. Kraus, O. Chesneau, A. Domiciano de Souza, F. X. de Araújo, P. Stee and A. Meilland A&A, 508 1 (2009) 309-320 Published online: 15 October 2009 DOI: 10.1051/0004-6361/200811318