Indicators of star formation : 4000 Å break and Balmer lines
نویسنده
چکیده
The behaviour of the 4000 Å break index and of the equivalent width of the main Balmer lines is investigated a) for a single star as a function of effective temperature, gravity and metallicity and b) for a single stellar population as a function of age and metallicity. Consequences for the interpretation of integrated spectra are presented.
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تاریخ انتشار 1997