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arXiv · 1604.00884

AKARI/IRC Near-Infrared Spectral Atlas of Galactic Planetary Nebulae

Ryou Ohsawa·Takashi Onaka·Itsuki Sakon·Mikako Matsuura·Hidehiro Kaneda
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Abstract

Near-infrared (2.5-5.0$\,\mu$m) low-resolution ($\lambda/\Delta\lambda{\sim}100$) spectra of 72 Galactic planetary nebulae (PNe) were obtained with the Infrared Camera (IRC) in the post-helium phase. The IRC, equipped with a $1'{\times}1'$ window for spectroscopy of a point source, was capable of obtaining near-infrared spectra in a slit-less mode without any flux loss due to a slit. The spectra show emission features including hydrogen recombination lines and the 3.3-3.5$\,\mu$m hydrocarbon features. The intensity and equivalent width of the emission features were measured by spectral fitting. We made a catalog providing unique information on the investigation of the near-infrared emission of PNe. In this paper, details of the observations and characteristics of the catalog are described.

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Ryou Ohsawa, Takashi Onaka, Itsuki Sakon, Mikako Matsuura, Hidehiro Kaneda. 2016-04-04. AKARI/IRC Near-Infrared Spectral Atlas of Galactic Planetary Nebulae. https://doi.org/10.3847/0004-6256/151/4/93

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