Age-Metallicity Relation: Comparison of Open Clusters' Data with Stellar Populations
نویسندگان
چکیده
منابع مشابه
Potential colors for determining age and metallicity of stellar populations
Context. Colors are usually not used for constraining stellar populations because they are thought to have the well-known agemetallicity degeneracy. But some recent works show that colors can also be used. The simple stellar population (SSP) synthesis model of Bruzual & Charlot (2003) (BC03) is widely used but there is no analysis for its colors. Aims. We try to find colors which can potentiall...
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We have recently calculated (Borges et al. 1995) integrated metallicity indices for single stellar populations (SSP). Effects of age, metallicity and abundances were taken into account. In particular, the explicit dependence of the indicesMg2 and NaD respectively on the ratios [Mg/Fe] and [Na/Fe] was included in the calibration. We report in this work an application of those models to a sample ...
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We present spectroscopic metallicities of individual stars in seven gas-rich dwarf irregular galaxies (dIrrs), and we show that dIrrs obey the same mass–metallicity relation as the dwarf spheroidal (dSph) satellites of both the Milky Way and M31: Z∗ ∝ M 0.30±0.02 ∗ . The uniformity of the relation is in contradiction to previous estimates of metallicity based on photometry. This relationship is...
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We investigate the vertical metallicity gradients of five mono-age stellar populations between 0 and 11Gyr for a sample of 18 435 dwarf stars selected from the cross-matched Tycho-Gaia Astrometric Solution and Radial Velocity Experiment (RAVE) Data Release 5. We find a correlation between the vertical metallicity gradients and age, with no vertical metallicity gradient in the youngest populatio...
متن کاملPotential of colors for determining age and metallicity of stellar populations
Context. Colors are usually not used for constraining stellar populations because they are thought to have the well-known agemetallicity degeneracy, but some recent works show that colors can also be used. A simple stellar population synthesis model is widely used, but there is no analysis for its colors. Aims. We try to find colors that can potentially be used to determine the age and metallic...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1996
ISSN: 0074-1809
DOI: 10.1017/s0074180900232701