Elemental high-precision abundances as function of stellar ages: Constrains on the Galactic chemical evolution

Autor:	Marcelo Tucci Maia
Rok vydání:	2017
Předmět:	Physics Chemical evolution Space and Planetary Science Galaxy formation and evolution Astrophysics::Solar and Stellar Astrophysics Astronomy and Astrophysics Astrophysics::Earth and Planetary Astrophysics Astrophysics Function (mathematics) Astrophysics::Galaxy Astrophysics
Zdroj:	Proceedings of the International Astronomical Union. 13:376-377
ISSN:	1743-9221 1743-9213
DOI:	10.1017/s174392131700816x
Popis:	Solar twins are a special group of stars that have spectra and stellar parameters very close to the Sun. Also having mass around 1 solar mass and roughly solar chemical composition, these stars follow a similar evolutionary path to the Sun, from the zero age main sequence to the end of their lives. Additional to that, the similarity between themselves permit us to obtain high-precision differential abundance and thus, very precise atmospheric parameters that allows a reliable estimation of their ages using the traditional isochronal method. Taking advantage of this very restrict group of stars we can better understand the effects of nucleosynthesis of chemical elements throughout the Galaxy and with this, finding constrains for its evolution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::27d47db350f10cd6582b7e84bbca9c0c https://doi.org/10.1017/s174392131700816x Zobrazit plný text záznamu Plný text ve formátu PDF