The Delta Scorpii Be binary: the disk development and periastron 2011 - Miroshnichenko, Anatoly S; Stefl, S; Manset, N; Bjorkman, K. S; Korpela, M; Davidson, J; Rivinius, T; Okazaki, A. T; Carciofi, Alex Cavalieri; Pollmann, E; Heathcote, B; Levato, H; et al. (Meeting of the American Astronomical Society with the Historical Astronomy Division (HAD) and the High Energy Astrophysics Division (HEAD), 2011)