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arXiv · 2208.11824

Optical IFU Observations of GOALS Sample with KOOLS-IFU on Seimei Telescope: Initial results of 9 U/LIRGs at $z <$ 0.04

Yoshiki Toba·Satoshi Yamada·Kazuya Matsubayashi·Koki Terao·Aoi Moriya·Yoshihiro Ueda·Kouji Ohta·Aoi Hashiguchi·Kazuharu G. Himoto·Hideyuki Izumiura·Kazuma Joh·Nanako Kato·Shuhei Koyama·Hiroyuki Maehara·Rana Misato·Akatoki Noboriguchi·Shoji Ogawa·Naomi Ota·Mio Shibata·Nozomu Tamada·Anri Yanagawa·Naoki Yonekura·Tohru Nagao·Masayuki Akiyama·Masaru Kajisawa·Yoshiki Matsuoka
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Abstract

We present ionized gas properties of 9 local ultra/luminous infrared galaxies (U/LIRGs) at $z <$ 0.04 through IFU observations with KOOLS-IFU on 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 H$\beta$, [OIII]$\lambda$5007, H$\alpha$, [NII]$\lambda\lambda$6549,6583, and [SII]$\lambda\lambda$6717,6731 with a spectral resolution of $R$ = 1500-2000, which provides (i) spatially-resolved ($\sim$200-700 pc) moment map of ionized gas and (ii) diagnostics for active galactic nucleus (AGN) within the central $\sim$3--11 kpc in diameter for our sample. We find that [OIII] outflow that is expected to be driven by AGN tends to be stronger (i) towards the galactic center and (ii) as a sequence of 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.

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Yoshiki Toba, Satoshi Yamada, Kazuya Matsubayashi, Koki Terao, Aoi Moriya, Yoshihiro Ueda, Kouji Ohta, Aoi Hashiguchi, Kazuharu G. Himoto, Hideyuki Izumiura, Kazuma Joh, Nanako Kato, Shuhei Koyama, Hiroyuki Maehara, Rana Misato, Akatoki Noboriguchi, Shoji Ogawa, Naomi Ota, Mio Shibata, Nozomu Tamada, Anri Yanagawa, Naoki Yonekura, Tohru Nagao, Masayuki Akiyama, Masaru Kajisawa, Yoshiki Matsuoka. 2022-08-25. Optical IFU Observations of GOALS Sample with KOOLS-IFU on Seimei Telescope: Initial results of 9 U/LIRGs at $z <$ 0.04. https://doi.org/10.1093/pasj%2Fpsac073

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