Mapping the ionised gas around the luminous QSO HE 1029-1401: evidence for minor merger events?B. Husemann, S. F. Sánchez, L. Wisotzki, K. Jahnke, D. Kupko, D. Nugroho and M. SchrammA&A, 519 (2010) A115DOI: https://doi.org/10.1051/0004-6361/201014559