Modelling Lick spectroscopic indexes with the tunable filters of OSIRIS on GTC

Cervantes-Rodríguez, J.; Vazdekis, A.; Cepa, J.
Referencia bibliográfica

New Astronomy Reviews, Volume 49, Issue 10-12, p. 670-674.

Fecha de publicación:
1
2006
Número de autores
3
Número de autores del IAC
3
Número de citas
1
Número de citas referidas
0
Descripción
We present the modelling of new indicators for old and intermediate age stellar populations based on the absorption features of Mg λ ˜ 5175 Å, Fe λ ˜ 4383 Å, and Hβ λ ˜ 5270, 4860 Å. Spectral models of stellar populations are convolved with the responses of the tunable filters of OSIRIS-GTC to provide photometric indexes with great abilities to separate age and metallicity effects. The new indexes allow us to obtain 2D maps of these features on the basis of a photometric approach and are built up to unreveal most relevant stellar population parameters.