Optical IFU observations of GOALS sample with KOOLS-IFU on Seimei Telescope: Initial results of nine U/LIRGs at <i>z</i>

Optical IFU observations of GOALS sample with KOOLS-IFU on Seimei Telescope: Initial results of nine U/LIRGs at z < 0.04

Published:2022-09-29 Issue:6 Volume:74 Page:1356-1367
ISSN:0004-6264
Container-title:Publications of the Astronomical Society of Japan
language:en
Short-container-title:

Author:

Toba Yoshiki¹²³⁴⁵^ORCID,Yamada Satoshi²⁶,Matsubayashi Kazuya⁷⁸,Terao Koki⁹¹⁰,Moriya Aoi³,Ueda Yoshihiro²^ORCID,Ohta Kouji²,Hashiguchi Aoi³,Himoto Kazuharu G¹¹,Izumiura Hideyuki¹²,Joh Kazuma¹¹,Kato Nanako¹¹,Koyama Shuhei⁵⁷,Maehara Hiroyuki¹²^ORCID,Misato Rana³,Noboriguchi Akatoki¹⁰¹¹¹³^ORCID,Ogawa Shoji²^ORCID,Ota Naomi³^ORCID,Shibata Mio³,Tamada Nozomu¹¹,Yanagawa Anri³,Yonekura Naoki¹¹,Nagao Tohru⁵^ORCID,Akiyama Masayuki¹⁰^ORCID,Kajisawa Masaru⁵¹¹,Matsuoka Yoshiki⁵^ORCID

Affiliation:

1. National Astronomical Observatory of Japan , 2-21-1 Osawa, Mitaka, Tokyo 181-8588 , Japan

2. Department of Astronomy, Kyoto University , Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto, Kyoto 606-8502 , Japan

3. Department of Physics, Nara Women’s University , Kitauoyanishi-machi, Nara, Nara 630-8506 , Japan

4. Academia Sinica Institute of Astronomy and Astrophysics , 11F Astronomy-Mathematics Building, AS/NTU, No.1, Section 4, Roosevelt Road, Taipei 10617 , Taiwan

5. Research Center for Space and Cosmic Evolution, Ehime University , 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577 , Japan

6. RIKEN Cluster for Pioneering Research , 2-1 Hirosawa, Wako, Saitama 351-0198 , Japan

7. Institute of Astronomy, Graduate School of Science, The University of Tokyo , 2-21-1 Osawa, Mitaka, Tokyo 181-0015 , Japan

8. Okayama Observatory, Kyoto University , Honjo 3037-5, Kamogata-cho, Asakuchi, Okayama 719-0232 , Japan

9. Subaru Telescope, National Astronomical Observatory of Japan , 650 North A’ohoku Place, Hilo, HI 96720 , USA

10. Astronomical Institute, Tohoku University , Aramaki, Aoba-ku, Sendai, Miyagi 980-8578 , Japan

11. Graduate School of Science and Engineering, Ehime University , 2-5 Bunkyo-cho, Matsuyama 790-8577 , Japan

12. Okayama Branch Office, Subaru Telescope, National Astronomical Observatory of Japan , NINS, Kamogata-cho, Asakuchi, Okayama 719-0232 , Japan

13. School of General Education, Shinshu University , 3-1-1 Asahi, Matsumoto, Nagano 390-8621 , Japan

Abstract

Abstract We present ionized gas properties of nine local ultra/luminous infrared galaxies (U/LIRGs) at z < 0.04 through Integral Field Unit (IFU) observations with KOOLS-IFU on the Seimei Telescope. The observed targets are drawn from the Great Observatories All-sky LIRG Survey (GOALS), covering a wide range of merger stages. We successfully detect emission lines such as Hβ, [O iii]λ5007, Hα, [N ii]λλ6549, 6583, and [S ii]λλ6717, 6731 with a spectral resolution of R = 1500–2000, which provides (i) a spatially resolved (∼200–700 pc) moment map of ionized gas and (ii) diagnostics for an active galactic nucleus (AGN) within the central ∼3–11 kpc in diameter for our sample. We find that the [O iii] outflow that is expected to be driven by an AGN tends to be stronger (i) towards the galactic center and (ii) as a sequence of the merger stage. In particular, the outflow strength in the late-stage (stage D) mergers is about 1.5 times stronger than that in the early-state (stage B) mergers, which indicates that galaxy mergers could induce AGN-driven outflow and play an important role in the co-evolution of galaxies and supermassive black holes.

Funder

JSPS

RIKEN Special Postdoctoral Researcher Program

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Link

https://academic.oup.com/pasj/article-pdf/74/6/1356/47471103/psac073.pdf

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