Branching fractions and A values in singly ionized tantalum (Ta II) P. Quinet, V. Fivet, P. Palmeri, É. Biémont, L. Engström, H. Lundberg and H. Nilsson A&A, 493 2 (2009) 711-719 Published online: 20 November 2008 DOI: 10.1051/0004-6361:200811035