The orientation of galaxy pairs with filamentary structures: dependence on morphology Valeria Mesa, Fernanda Duplancic, Sol Alonso, Maria Rosa Muñoz Jofré, Georgina Coldwell and Diego G. Lambas A&A, 619 (2018) A24 Published online: 31 October 2018 DOI: 10.1051/0004-6361/201832910