期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 396, 期 1, 页码 L71-L75出版社
OXFORD UNIV PRESS
DOI: 10.1111/j.1745-3933.2009.00664.x
关键词
galaxies: evolution; galaxies: statistics; galaxies: stellar content
资金
- CNPq
- CAPES
- FAPESP
- France-Brazil CAPES-COFECUB program
- Observatoire de Paris
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 modelled 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-circle dot is mainly driven by the history of star formation and not by inflows or outflows.
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