Evidence of short-lived SN Ia progenitors É. Aubourg, R. Tojeiro, R. Jimenez, A. Heavens, M. A. Strauss and D. N. Spergel A&A, 492 3 (2008) 631-636 Published online: 06 November 2008 DOI: 10.1051/0004-6361:200809796