Decoding the stellar fossils of the dusty Milky Way progenitors

5th Young Researcher Meeting, Trieste 2014

De Bennassuti, M.^1,2 ; Schneider, R.^2 ; Valiante, R.^2 ; Salvadori, S.^3

Dipartimento di Fisica, Sapienza Università di Roma, Piazzale Aldo Moro 5, Rome

00185, Italy^1

INAF-Osservatorio Astronomico di Roma, Via di Frascati 33, Monte Porzio Catone

00040, Italy^2

Kapteyn Astronomical Institute, University of Groningen, Landleven 12, AD Groningen

9747, Netherlands^3

关键词: Carbon-rich stars;    Formation and evolutions;    Observational data;    Relative contribution;    Relative fraction;    Scaling relations;    Star formations;    Transition criterion;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/566/1/012010/pdf
DOI  :  10.1088/1742-6596/566/1/012010

来源: IOP

【 摘 要 】

We investigate the metallicity distribution function (MDF) of the Galactic halo and the relative fraction of Carbon-normal and Carbon-rich stars using the semi-analytical code GAMETE. The code reconstructs the hierarchical merger tree of the Milky Way (MW) and follows the star formation history and the metal evolution in individual progenitors, including for the first time the formation and evolution of dust. We predict scaling relations between the dust, metal and gas masses for MW progenitors and compare them with observational data of galaxies at 0 ≤ z