Spina, L; Melendez, Jorge; Karakas, A. I.; dos Santos, Leonardo; Bedell, Megan; Asplund, Martin; Ramirez, Ivan; Yong, David; Alves-Brito, A; Bean, Jacob; Dreizler, S
Important insights into the formation and evolution of the Galactic disc(s) are contained in the chemical compositions of stars. We analysed high-resolution and high signal-to-noise HARPS spectra of 79 solar twin stars in order to obtain precise determinations of their atmospheric parameters, ages (sigma similar to 0.4 Gyr) and chemical abundances (sigma < 0.01 dex) of 12 neutron-capture elements (Sr, Y, Zr, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd and Dy). This valuable data set allows us to study the...[Show more]
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