High-contrast imaging with Spitzer: deep observations of Vega, Fomalhaut, and ϵ Eridani Markus Janson, Sascha P. Quanz, Joseph C. Carson, Christian Thalmann, David Lafrenière and Adam Amara A&A, 574 (2015) A120 Published online: 04 February 2015 DOI: 10.1051/0004-6361/201424944