Planck 2015 results. XXVII. The second Planck catalogue of Sunyaev-Zeldovich sources

P.A.R. Ade, N. Aghanim, M. Arnaud, M. Ashdown, J. Aumont, C. Baccigalupi, A.J. Banday, R.B. Barreiro, R. Barrena, J. G. Bartlett, Pavel Nasselski, Per Rex Christensen, Anne Mette Frejsel, Igor Dmitrievich Novikov, Hans Ulrik Nørgaard-Nielsen