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The present-time Milky Way stellar Metallicity Gradient

Published online by Cambridge University Press:  03 March 2020

Laura Inno
Laura Inno*
Affiliation:
Max-Planck Institute for Astronomy, D-69117, Heidelberg, Germany email: [email protected]
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Abstract

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The present-time Milky Way (MW) radial metallicity gradient is a prime observable for galaxy evolution studies. Yet, a large diversity of measured gradients can be found in the literature, with values ranging from -0.01 to -0.09 dex kpc−1, depending on the tracers used. In order to understand if this diversity comes from Galactic evolution processes or observational biases, stellar probes uniformly distributed across the disc and with accurately known ages and distances are needed. Classical Cepheids fulfil all these requirements and have been used to measure accurate abundance gradients in the MW. Here, I summarise some of the recent results based on Cepheids and on other stellar probes of similar age, and briefly discuss their implication for Galactic evolution.

Keywords

stars: variables: CepheidsGalaxy: abundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium A30: Astronomy in Focus XXX , August 2018 , pp. 237 - 239
Copyright
© International Astronomical Union 2020

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