Nature and statistical properties of quasar associated absorption systems in the XQ-100 Legacy Survey

Serena Perrotta, Valentina D'Odorico, J. Xavier Prochaska, Stefano Cristiani, Guido Cupani, Sara Ellison, Sebastian Lòpez, George D. Becker, Trystyn A. M. Berg, Lise Christensen, Kelly D. Denney, Frederick Hamann, Isabelle Pâris, Marianne Vestergaard, Gábor Worseck