Search for hidden Active Galactic Nuclei using Infrared satellite "AKARI" mid-infrared survey

2012 Fiscal Year Final Research Report

• Project/Area Number: 22740134
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Astronomy
• Research Institution: Nagoya University
• Principal Investigator: OYABU Shinki 名古屋大学, 理学研究科, 助教 (10396806)
• Project Period (FY): 2010 – 2012
• Keywords: 光学赤外線天文学

Research Abstract

We performed the search for active galactic nuclei (AGNs) using AKARI mid-infrared (MIR) all-sky survey. “AKARI” is the first Japanese infrared satellite dedicated for infrared astronomy. Especially, our MIR searchcan find not only normal AGNs but also dusty AGNs which are elusive in other wavelengths. Combining AKARI data with optical spectra taken with ground-based telescopes and X-ray data of the Japanese X-ray satellite “Suzaku”, we found three dusty AGNs which do not show any AGN features in other wavelength but infrared band.We also found that the host galaxies of these dusty AGNs are less massive than AGNs that are found with optical spectroscopic surveys. While this result comes from small statistics, our survey will provide the expectation of future search for dusty AGNs.

Research Products

• [Journal Article] he 18 um Luminosity Function of Galaxies with Akari (2012)
  • Author(s): Toba, Yoshiki, Oyabu, Shinki, Matsuhara, Hideo, Ishihara, Daisuke, Malkan, Matt, Wada, Takehiko, Ohyama, Youichi, Kataza, Hirokazu, and Takita, Satoshi
  • Journal Title: Publication of Korean Astronomical Society Volume: 27 Pages: 335
  • Peer Reviewed
• [Journal Article] The 3.3 Micron PAH Emission of the Mid-Infrared Excess Galaxies Discovered by the Akari Mid-Infrared All-Sky Survey (2012)
  • Author(s): Yamada, R., Oyabu, S., Kaneda, H., Yamagishi, M., Ishihara, D., Kim, J.~H., Im, M., Toba, Y., and Matsuhara, H.
  • Journal Title: 2012 ,Publication of Korean Astronomical Society Volume: 29 Pages: 299
  • Peer Reviewed
• [Journal Article] Near-Infrared High-Resolution Spectroscopy of the Obscured AGN IRAS 01250+2832 (2012)
  • Author(s): Shirahata, M., Usuda, T., Oyabu, S., Nakagawa, T., and Yamamura, I
  • Journal Title: Publication of Korean Astronomical Society Volume: 27 Pages: 295
  • Peer Reviewed
• [Journal Article] Infrared and Hard X-Ray Diagnostics of AGN Identification from the Akari and Swift/bat All-Sky Surveys (2012)
  • Author(s): Matsuta, K., Gandhi, P., Dotani, T., Nakagawa, T., Isobe, N., Ueda, Y., Ichikawa, K., Terashima, Y., Oyabu, S., Yamamura, I.and Stawarz, L
  • Journal Title: Publication of Korean Astronomical Society Volume: 27 Pages: 285
  • Peer Reviewed
• [Journal Article] and Far-Infrared Properties of Local Active Galactic Nuclei (2012)
  • Author(s): Ichikawa, Kohei, Ueda, Yoshihiro, Terashima, Yuichi, Oyabu, Shinki, Gandhi, Poshak, Matsuta, Keiko, and Nakagawa, Takao
  • Journal Title: Publication of Korean Astronomical Society Volume: 27 Pages: 275
  • Peer Reviewed
• [Journal Article] Survey of Dusty Active Galactic Nuclei Based on the Mid-Infrared All-Sky Survey Catalog (2012)
  • Author(s): Oyabu, S., Ishihara, D., Yamada, R., Kaneda, H., Yamagishi, M., Toba, Y., Matsuhara, H., Nakagawa, T., Malkan, M., and Shirahata, M.
  • Journal Title: Publication of Korean Astronomical Society Volume: 27 Pages: 265
  • Peer Reviewed
• [Journal Article] Mid- and Far-infrared Properties of a Complete Sample of Local Active Galactic Nuclei (2012)
  • Author(s): Ichikawa, Kohei, Ueda, Yoshihiro, Terashima, Yuichi, Oyabu, Shinki, Gandhi, Poshak, Matsuta, Keiko, and Nakagawa, Takao
  • Journal Title: The Astrophysical Journal Volume: 45 Pages: 754
  • Peer Reviewed
• [Journal Article] Infrared and Hard X-Ray Diagnostics of Active Galactic Nucleus Identification from the Swift/BAT and AKARI All-sky Surveys (2012)
  • Author(s): Matsuta, K., Gandhi, P., Dotani, T., Nakagawa, T., Isobe, N., Ueda, Y., Ichikawa, K., Terashima, Y., Oyabu, S., Yamamura, I.and Stawarz, L.
  • Journal Title: The Astrophysical Journal Volume: 104 Pages: 753
  • Peer Reviewed
• [Journal Article] AKARI detections of hot dust in luminous infrared galaxies. Search for dusty active galactic nuclei (2011)
  • Author(s): Oyabu, S., Ishihara, D., Malkan, M.Matsuhara, H., Wada, T., Nakagawa, T., Ohyama, Y., Toba, Y., Onaka, T., Takita, S., Kataza, H., Yamamura, I., and Shirahata, M.
  • Journal Title: 2011 ,Astronomy and Astrophysics Volume: 529 Pages: A122
  • Peer Reviewed
• [Journal Article] Outflow in Overlooked Luminous Quasar: Subaru Observations of AKARI J1757+5907 (2011)
  • Author(s): Aoki, Kentaro, Oyabu, Shinki, Dunn, Jay P., Arav, Nahum, Edmonds, Doug, Korista, Kirk T., Matsuhara, Hideo, Toba, Yoshiki
  • Journal Title: Publication of Astronomical Society of Japan Volume: 63 Pages: 457
  • Peer Reviewed
• [Journal Article] Laboratory and In-Flight Measurements at 10-55 K of InSb Near-Infrared Detector Performance for the Warm Mission of the AKARI Satellite (2011)
  • Author(s): Mori, Tatsuya, Kaneda, Hidehiro, Ishihara, Daisuke, Oyabu, Shinki, Wada, Takehiko
  • Journal Title: Publications of the Astronomical Society of the Pacific Volume: 123 Pages: 942
  • Peer Reviewed
• [Presentation] 「あかり」活動銀河核のダストトラスのSpectral Energy Distribution の構築とダストトーラスのモデル化 (2012)
  • Author(s): 大薮進喜
  • Organizer: 日本天文学会 2012 年秋季年会
  • Place of Presentation: 大分、日本
  • Year and Date: 20120900
• [Presentation] Survey of dusty AGNs based on the mid-infrared all-sky survey catalog (2012)
  • Author(s): Oyabu, S
  • Organizer: The Second AKARI Conference:Legacy of AKARI: A Panoramic View of the Dusty Universe
  • Place of Presentation: 招待講演, Jeju, Korea
  • Year and Date: 20120200
• [Presentation] Search for AGN using AKARI Mid-infrared All-Sky Survey (2010)
  • Author(s): Oyabu, S
  • Organizer: 国際会議"The first year of MAXI: Monitoring variable X-ray sources 4th International MAXI Workshop
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 20101100