Indicators of star formation: 4000 Angstrom break and Balmer lines

B.M. Poggianti (Institute of Astronomy; Cambridge); G.Barbaro (Dipartimento di Astronomia; Padova); Royal Greenwich Observatory

arxiv: astro-ph/9703067 · v1 · submitted 1997-03-11 · 🌌 astro-ph

Indicators of star formation: 4000 Angstrom break and Balmer lines

B.M. Poggianti (Institute of Astronomy , Royal Greenwich Observatory , Cambridge) , G.Barbaro (Dipartimento di Astronomia , Padova) This is my paper

classification 🌌 astro-ph

keywords angstrombalmerbreakfunctionlinesmetallicitysinglestar

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The behaviour of the 4000 Angstrom 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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