The interplay between active galactic nuclei and star formation activities of type 1 active galactic nuclei probed by polycyclic aromatic hydrocarbon 3.3 μm emission feature with AKARI

PASJ: Publications of the Astronomical Society of Japan

Nakagawa, Takao¹  Lee, Myung Gyoon¹  Kim, Dohyeong¹  Wada, Takehiko¹  Karouzos, Marios¹  Woo, Jong-Hak²  Im, Myungshin²  Ohyama, Youichi³  Takagi, Toshinobu³  Lee, Hyung Mok⁴  Matsuhara, Hideo⁵  Oyabu, Shinki⁶  Jun, Hyunsung D⁷  Kim, Ji Hoon⁸ 

[1] Astronomy Program, Department of Physics and Astronomy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea;Center for the Exploration of the Origin of the Universe (CEOU), Astronomy Program, Department of Physics and Astronomy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea;Department of Space Astronomy and Astrophysics, the Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-5210, Japan;Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China;Korea Astronomy and Space science Institute, Daejeon 34055, Republic of Korea;Korea Institute for Advanced Study, 85 Hoegi-ro, Dongdaemun-gu, Seoul 02455, Republic of Korea;Nature Astronomy, Springer Nature, 4 Crinan Street, London N1 9XW, UK;Subaru Telescope, National Astronomical Observatory of Japan, 650 North Aohoku Place, Hilo, HI 96720, USA

关键词: black hole physics;    galaxies: star formation;    (galaxies:) quasars: general;    galaxies: active;    galaxies: Seyfert;   

DOI  :  10.1093/pasj/psy144

学科分类：天文学(综合)

来源: Oxford University Press

【 摘 要 】

We investigate the connection between active galactic nucleus (AGN) and star formation activities of AGN host galaxies by studying the 3.3 μm polycyclic aromatic hydrocarbon (PAH) emission feature of 79 type 1 AGNs using the AKARI space telescope. Utilizing the slitless spectroscopic capability of the AKARI Infrared Camera, we obtained the spectra in the wavelength range of 2–5 μm from extended regions of the sample galaxies in order to measure star formation activity from the entire host galaxies. We detected the 3.3 μm PAH emission feature from 18 sample galaxies and measured the luminosities of the feature (LPAH3.3). We found that LPAH3.3 is significantly correlated with AGN luminosities (LAGN), such as 5100 Å monochromatic luminosity, and X-ray luminosity regardless of host galaxy morphology and radio-loudness. The correlation between LPAH3.3 and LAGN follows |$L_{\rm {PAH3.3}} \propto L_{\rm {AGN}}^{0.9}$|⁠. Therefore we suggest that host galaxies with stronger AGN activities have stronger star formation activities. We also found that the ratios between LPAH3.3 and the bolometric infrared luminosity (LIR) of our sample galaxies are lower than for non-AGN galaxies due to increased LIR. We suggest that this can be attributed to the contribution of AGN to LIR.

【 授权许可】

CC BY