B. Lemasle, V. Kovtyukh, R. da Silva, R. Mor, G. Bono, F. Figueras, P. François, L. Inno, D. Magurno, N. Matsunaga, A. McWilliam, A. C. Robin
Abstract:AbstractCepheids are excellent stellar tracers: they are bright enough to be observed even at large distances; their distances can be accurately determined via period-luminosity relations; their spectra contain numerous lines that enable us to derive abundances for many α, iron-peak or neutron-capture elements. Classical Cepheids are yellow supergiants that trace the young populations (⩽ 300 Myr); Type II Cepheids are post Horizontal Branch, low-mass, Population II stars (⩾ 10 Gyr). Both can be used for many p…
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