The first detection of near-infrared CN bands in active galactic nuclei : signature of star formation
作者： Alberto Rodriguez-Ardila , Miriani Griselda Pastoriza , Claudia Maraston , Rogemar André Riffel
DOI: 10.1086/517999
关键词:
摘要: We present the first detection of near-infrared CN absorption band in nuclear spectra active galactic nuclei (AGNs). This feature is a recent star formation tracer, being particularly strong carbon stars. The equivalent width line correlates with that CO at 2.3 μm as expected stellar populations (SPs) ages between ~0.2 and ~2 Gyr. presence 1.1 sources taken unambiguous evidence young/intermediate SPs close to central source AGNs. Near-infrared bands can be powerful age indicators for connected AGNs, understanding which crucial context galaxy AGN feedback.
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