# Red giants observed by CoRoT and APOGEE: The evolution of the Milky Way's radial metallicity gradient

@article{Anders2016RedGO,
title={Red giants observed by CoRoT and APOGEE: The evolution of the Milky Way's radial metallicity gradient},
author={Friedrich Anders and Cristina Chiappini and Ivan Minchev and Andrea Miglio and Josefina Montalb'an and Beno{\^i}t Mosser and Tha{\'i}se S. Rodrigues and Bas{\'i}lio Xavier Santiago and Frédéric Baudin and Timothy C. Beers and Luiz Nicolaci da Costa and R. Tom'as Garc'ia and Domingo An'ibal Garc'ia-Hern'andez and Jon A. Holtzman and Marcio A. G. Maia and Steven R. Majewski and Savita Mathur and A. Noels-Grotsch and Kaike Pan and Donald P. Schneider and Mathias Schultheis and Matthias Steinmetz and Marica Valentini and Olga Zamora},
journal={arXiv: Astrophysics of Galaxies},
year={2016}
}
• Published 17 August 2016
• Physics, Geology
• arXiv: Astrophysics of Galaxies
Using combined asteroseismic and spectroscopic observations of 418 red-giant stars close to the Galactic disc plane (6 kpc $<R_{\rm Gal}\lesssim13$ kpc, $|Z_{\rm Gal}|<0.3$ kpc), we measure the age dependence of the radial metallicity distribution in the Milky Way's thin disc over cosmic time. The slope of the radial iron gradient of the young red-giant population ($-0.058\pm0.008$ [stat.] $\pm0.003$ [syst.] dex/kpc) is consistent with recent Cepheid measurements. For stellar populations with…

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