The evolution of the mass-metallicity relation in SDSS galaxies uncovered by astropaleontology

Autor:	Asari, N. Vale, Stasinska, G., Fernandes, R. Cid, Gomes, J. M., Schlickmann, M., Mateus, A., Schoenell, W.
Rok vydání:	2009
Předmět:	Astrophysics - Astrophysics of Galaxies
Druh dokumentu:	Working Paper
DOI:	10.1111/j.1745-3933.2009.00664.x
Popis:	We have obtained the mass-metallicity (M-Z) relation at different lookback times for the same set of galaxies from the Sloan Digital Sky Survey, using the stellar metallicities estimated with our spectral synthesis code STARLIGHT. We have found that this relation steepens and spans a wider range in both mass and metallicity at higher redshifts. We have modeled the time evolution of stellar metallicity with a closed-box chemical evolution model, for galaxies of different types and masses. Our results suggest that the M-Z relation for galaxies with present-day stellar masses down to 10^10 M_sun is mainly driven by the history of star formation history and not by inflows or outflows. Comment: Accepted for publication in MNRAS
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0903.4167 Zobrazit plný text záznamu View this record from Arxiv