Supernovae without host galaxies? - The low surface brightness host of SN 2009Z P.-C. Zinn, M. Stritzinger, J. Braithwaite, A. Gallazzi, P. Grunden, D. J. Bomans, N. I. Morrell and U. Bach A&A, 538 (2012) A30 Published online: 30 January 2012 DOI: 10.1051/0004-6361/201116433