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- W4385664303 abstract "Double-peaked profiles associated with the broad-line region (BLR) of active galactic nuclei (AGNs) are regarded as the clearest evidence of the presence of an accretion disk. They are most commonly detected by means of optical spectroscopy in the Balmer lines and in the Mg II $lambda$2798 ultraviolet line. Here, we report the first unambiguous detection of a double-peak broad emission line associated with the O I $lambda$11297 emission line in the near-infrared (NIR) in the local Seyfert 1 galaxy III Zw 002. Additionally, we detect simultaneously in the spectrum the double-peak emission in the Pa$alpha$ line and very likely in the He II $lambda$10830. This is the first time that several broad double-peaked NIR emission lines have been detected simultaneously. The double-peaked profiles are fit using a disk-based model, with an additional Gaussian component attributed to nondisk clouds, which represents the classical BLR. Our results obtained from the fits reveal important parameters, such as disk inclination and geometry. From the double-peaked profile fits, we suggest that the BLR in III Zw 002 has a disk-like geometry, as it extends up to the outer edge of the BLR." @default.
- W4385664303 created "2023-08-09" @default.
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- W4385664303 date "2023-08-01" @default.
- W4385664303 modified "2023-09-26" @default.
- W4385664303 title "First Observation of a Double-peaked O i Emission in the Near-infrared Spectrum of an Active Galaxy" @default.
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- W4385664303 doi "https://doi.org/10.3847/2041-8213/ace974" @default.
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