X-ray deficiency on strongly accreting T Tauri stars - Comparing Orion with Taurus I. Bustamante, B. Merín, H. Bouy, C. F. Manara, Á. Ribas and P. Riviere-Marichalar A&A, 587 (2016) A81 Published online: 22 February 2016 DOI: 10.1051/0004-6361/201527383