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- Title
Properties of polycyclic aromatic hydrocarbons in the star forming environment in nearby galaxies.
- Authors
Sakon, Itsuki; Onaka, Takashi; Kato, Daisuke; Kaneda, Hidehiro; Kataza, Hirokazu; Okada, Yoko; Kawamura, Akiko; Onishi, Toshikazu; Fukui, Yasuo
- Abstract
We have carried out the mid-infrared slit spectroscopic observations of sources in the LMC and in NGC 6946 with AKARI/IRC. We investigate the properties of the UIR bands in terms of the star forming activities. We find systematically larger ratios of UIR bands in 6–9 μm to 11.2 μm band in active star forming regions than in the quiet regions. This behavior is consistent with the photo-ionization model of PAHs. Our results suggest that the ratios of UIR bands in 6–9 μm to 11.2 μm band can be used as more efficient and vigorous tools to measure the extent of on-going star formation in remote galaxies rather than just the presence or absence of the features themselves.
- Publication
Proceedings of the International Astronomical Union, 2008, Vol 4, Issue S251, p241
- ISSN
1743-9213
- Publication type
Article
- DOI
10.1017/S1743921308021662