The Ca II triplet lines in Starburst and AGN |
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| Authors: | María Luisa García Vargas Angeles I Díaz Elena Terlevich Roberto Terlevich |
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| Institution: | (1) Dpto. de Física Teórica, Universidad Autónoma de Madrid, Cantoblanco, Madrid, Spain;(2) Royal Greenwich Observatory, Cambridge, U.K. |
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| Abstract: | In the frame of the Starburst Model for AGN, we show that the evolution of a massive stellar cluster in a high metallicity environment can reproduce the observed equivalent widths of Ca II triplet lines in absorption in Starburst and active galactic nuclei. In the case of Starburst galaxies, this strength, together with the emission-line ratio O II]/O III], can be used to determine the age of the cluster. The strength of the Ca II lines is mainly governed by the age of the stellar cluster through the presence of red supergiant stars. |
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