1 J.C. Green, S.M. Foreman, S.N. Osterman, D.C. Ebbets, S.R. Heap, C.. Leitherer, J.L. Linsky, B.D. Savage, K.R. Sembach, A.S. Szalay, O.H.W. Siegmund, T.P. Snow, J.. Spencer, A.S. Stern, J.T. Stocke, B.. Welsh, S.. BĂ©land, E.B. Burgh, C.W. Danforth, J.. Frank, B.. Keeney, J.. McPhate, S.V. Penton, J.P. Andrews, J.D. Branch, J.A. Morse, and E.. Wilkinson, The Astrophysical Journal 744, (2012).