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Bertelli Motta, C.Pasquali, A.Richer, J.Michaud, G.Salaris, M.Bragaglia, A.Magrini, L.Randich, S.Grebel, E.K.Adibekyan, V.Blanco-Cuaresma, S.Drazdauskas, A.Fu, X.Martell, S.Tautvaišiene, G.Gilmore, G.Alfaro, E.J.Bensby, T.Flaccomio, E.Koposov, S.E.Korn, A.J.Lanzafame, A.C.Smiljanic, R.Bayo, A.Carraro, G.Casey, A.R.Costado, M.T.Damiani, F.Franciosini, E.Heiter, U.Hourihane, A.Jofré, P.Lardo, C.Lewis, J.Monaco, L.Morbidelli, L.Sacco, G.G.Sousa, S.G.Worley, C.C.Zaggia, S.[The Gaia-ESO Survey: Evidence of atomic diffusion in M67?]The Gaia-ESO Survey: Evidence of atomic diffusion in M67?

Context. The ratio of the first overtone (1O)/fundamental (F) periods of mixed-mode Cepheids that pulsate simultaneously in these two modes (F/1O) is metallicity-dependent. It can therefore be used to characterize the systems that host such variable stars. Aims. We want to take advantage of the F...


Lemasle, B.Hajdu, G.Kovtyukh, V.Inno, L.Grebel, E.K.Catelan, M.Bono, G.François, P.Kniazev, A.Da Silva, R.Storm, J.[Milky Way metallicity gradient from Gaia DR2 F/1O double-mode Cepheids]Milky Way metallicity gradient from Gaia DR2 F/1O double-mode Cepheids

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