Probing the stellar population of seyfert galaxies: a near infrared perspective

作者: Rogério Riffel , Miriani G. Pastoriza , Alberto Rodríguez-Ardila , Charles Bonatto

DOI: 10.1017/S1743921310002711

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摘要: We employ IRTF SpeX NIR (0.8--2.4mu m) spectra to investigate the stellar population (SP), active galactic nuclei (AGN), featureless continuum (FC) and hot dust properties in 9 Sy1 15 Sy2 galaxies. Both {\sc starlight} code as an additional base element were used for first time this spectral range. Our synthesis shows significant differences between galaxies: component is required fit K-band of ~90% galaxies, only ~25% Sy2; about 50% galaxies require FC contribution >20%; fraction increases 60% Sy1. In Sy2, combined young components contribute with more than 20%, while occurs 90% Sy1, suggesting recent star formation central region. The few hundred parsecs our galaxy sample contain a substantial intermediate-age SPs mean metallicity near solar. SP confirms that 1.1microns CN band can be tracer populations.

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