A grid of star cluster properties for stellar population synthesis

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Astronomical Catalogs, Metallicity, Star Clusters, Stellar Evolution, Stellar Spectrophotometry, Balmer Series, Interstellar Extinction, Spectral Line Width, Stellar Spectra

Scientific paper

Measurements of equivalent widths are presented for 70 windows (as well as the normalized continuous distribution) in the integrated spectra of 63 star clusters with known age, metallicity, and reddening. From this data a grid of mean star cluster properties is derived as a function of age and metallicity. Equivalent widths are provided for the Balmer lines and for a selection of 13 metallic features, together with the continuum distribution, at ages 16.5 Gyr, 5 Gyr, 1 Gyr, 500 Myr, 100 Myr, 50 Myr, and 10 Myr and for metallicities (Z/solar Z) = 0.6, 0.0, -0.5, -1.0, -1.5 and -2.0.

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