Refining the asteroseismic model for the young δ Scuti star HD 144277 using HARPS spectroscopy K. Zwintz, T. Ryabchikova, P. Lenz, A. A. Pamyatnykh, L. Fossati, T. Sitnova, M. Breger, E. Poretti, M. Rainer, M. Hareter and L. Mantegazza A&A, 567 (2014) A4 Published online: 04 July 2014 DOI: 10.1051/0004-6361/201322959