HST and VLT observations of the neutron star 1E 1207.4–5209 A. De Luca, R. P. Mignani, A. Sartori, W. Hummel, P. A. Caraveo, S. Mereghetti and G. F. Bignami A&A, 525 (2011) A106 Published online: 06 December 2010 DOI: 10.1051/0004-6361/201014982