ATLASGAL – Ammonia observations towards the southern Galactic plane M. Wienen, F. Wyrowski, K. M. Menten, J. S. Urquhart, C. M. Walmsley, T. Csengeri, B. S. Koribalski and F. Schuller A&A, 609 (2018) A125 Published online: 01 February 2018 DOI: 10.1051/0004-6361/201526384