First detection of gas-phase ammonia in a planet-forming disk

• NH3, N2H+, and H2O in the disk around TW Hydrae
• Vachail N. Salinas, Michiel R. Hogerheijde, Edwin A. Bergin, L. Ilsedore Cleeves, Christian Brinch, Geoffrey A. Blake, Dariusz C. Lis, Gary J. Melnick, Olja Panić, John C. Pearson, Lars Kristensen, Umut A. Yıldız, Ewine F. van Dishoeck

• Astronomy and Astrophysics, June 2016, EDP Sciences
• DOI: 10.1051/0004-6361/201628172