Cepheids 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 purposes in Milky Way archaeology....
Cepheids as Swiss army knives for Milky Way archaeology
Inno, Laura;
2018-01-01
Abstract
Cepheids 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 purposes in Milky Way archaeology....File in questo prodotto:
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