New constraints on the CH4 vertical profile in Uranus and Neptune from Herschel observations E. Lellouch, R. Moreno, G. S. Orton, H. Feuchtgruber, T. Cavalié, J. I. Moses, P. Hartogh, C. Jarchow and H. Sagawa A&A, 579 (2015) A121 Published online: 15 July 2015 DOI: 10.1051/0004-6361/201526518