G351.77–0.51: ridge formation caught in the act S. Leurini, T. Pillai, P. Jones, T. Csengeri, C. König, T. Stanke, F. Wyrowski, K.M. Menten, P. Caselli, M. Cunningham and L. Testi EAS Publications Series, 75-76 (2015) 265-268 Published online: 20 May 2016 DOI: 10.1051/eas/1575052