https://doi.org/10.1051/epjconf/20121905010
The distribution of the elements in the thin disc from classical Cepheids
1 Kapteyn Institute, University of Groningen, PO Box 800, 9700 AV Groningen, The Netherlands
2 Astronomical Observatory, Odessa National University, T.G. Shevchenko Park, 65014 Odessa, Ukraine
3 Observatoire de Paris, GEPI, 61 avenue de l’Observatoire, 75014 Paris, France
4 Università di Roma Tor Vergata, via della Ricerca Scientifica 1, 00133 Roma, Italy
5 South African Astronomical Observatory, PO Box 9, 7935 Observatory, South Africa
6 Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Collurania, via M. Maggini, 64100 Teramo, Italy
7 European Southern Observatory (ESO), Karl Schwarzschild-Strasse 2, 85748 Garching, Germany
a e-mail: lemasle@astro.rug.nl
Classical Cepheids are the most popular primary distance indicator. They allow us to determine the Galactic abundances gradients and to constrain the chemical enrichment of the thin disc. We present here results based on high resolution spectra of 63 Cepheids. They indicate local abundances inhomogeneities in the outer disc (Rg >10 kpc).
© Owned by the authors, published by EDP Sciences, 2012
