A&A 566, A37 (2014) Astronomy DOI: 10.1051/0004-6361/201323198 & c ESO 2014 Astrophysics On the fine structure of the Cepheid metallicity gradient in the Galactic thin disk, K. Genovali1, B. Lemasle2,G.Bono1,3, M. Romaniello4, M. Fabrizio5, I. Ferraro3,G.Iannicola3,C.D.Laney6,7, M. Nonino8, M. Bergemann9,10, R. Buonanno1,5, P. François11,12, L. Inno1,4, R.-P. Kudritzki13,14,9, N. Matsunaga15, S. Pedicelli1, F. Primas4, and F. Thévenin16 1 Dipartimento di Fisica, Università di Roma Tor Vergata, via della Ricerca Scientifica 1, 00133 Rome, Italy e-mail:
[email protected] 2 Astronomical Institute Anton Pannekoek, Science Park 904, PO Box 94249, 1090 GE Amsterdam, The Netherlands 3 INAF – Osservatorio Astronomico di Roma, via Frascati 33, Monte Porzio Catone, Rome, Italy 4 European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching bei Munchen, Germany 5 INAF – Osservatorio Astronomico di Collurania, via M. Maggini, 64100 Teramo, Italy 6 Department of Physics and Astronomy, N283 ESC, Brigham Young University, Provo, UT 84601, USA 7 South African Astronomical Observatory, PO Box 9, Observatory 7935, South Africa 8 INAF – Osservatorio Astronomico di Trieste, via G.B. Tiepolo 11, 40131 Trieste, Italy 9 Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Str. 1, 85741 Garching, Germany 10 Institute of Astronomy, University of Cambridge, Madingley Road, CB3 0HA, Cambridge, UK 11 GEPI – Observatoire de Paris, 64 avenue de l’Observatoire, 75014 Paris, France 12 UPJV – Université de Picardie Jules Verne, 80000 Amiens, France 13 Institute for Astronomy, University of Hawai’i, 2680 Woodlawn Dr, Honolulu, HI 96822, USA 14 University Observatory Munich, Scheinerstr.