%0 Generic %1 chen2019discovery %A Chen, Xiaoyang %A Akiyama, Masayuki %A Noda, Hirofumi %A Abdurrouf, %A Toba, Yoshiki %A Yamamura, Issei %A Kawaguchi, Toshihiro %A Kokubo, Mitsuru %A Ichikawa, Kohei %D 2019 %K ULIRG outflow %R 10.1093/pasj/psz002 %T Discovery of a strong ionized-gas outflow in an AKARI-selected Ultra-luminous Infrared Galaxy at z = 0.5 %U http://arxiv.org/abs/1901.05618 %X In order to construct a sample of ultra-luminous infrared galaxies (ULIRGs, with infrared luminosity, $L_IR > 10^12$ L$_ødot$) at 0.5 < z < 1, we are conducting an optical follow-up program for bright 90-$\mu$m FIR sources with a faint optical (i < 20) counterpart selected in the AKARI Far-Infrared Surveyor (FIS) Bright Source catalog (Ver.2). AKARI-FIS-V2 J0916248+073034, identified as a ULIRG at z = 0.49 in the spectroscopic follow-up observation, indicates signatures of an extremely strong outflow in its emission line profiles. Its OIII 5007\AA\ emission line shows FWHM of 1830 km s$^-1$ and velocity shift of -770 km s$^-1$ in relative to the stellar absorption lines. Furthermore, low-ionization OII 3726\AA\ 3729\AA\ doublet also shows large FWHM of 910 km s$^-1$ and velocity shift of -380 km s$^-1$. After the removal of an unresolved nuclear component, the long-slit spectroscopy 2D image possibly shows that the outflow extends to radius of 4 kpc. The mass outflow and energy ejection rates are estimated to be 500 M$_ødot$ yr$^-1$ and $4\times10^44$ erg s$^-1$, respectively, which imply that the outflow is among the most powerful ones observed in ULIRGs and QSOs at 0.3 < z < 1.6. The co-existence of the strong outflow and intense star formation (star formation rate of 990 M$_ødot$ yr$^-1$) indicates that the feedback of the strong outflow has not severely affect the star-forming region of the galaxy.

@misc{chen2019discovery, abstract = {In order to construct a sample of ultra-luminous infrared galaxies (ULIRGs, with infrared luminosity, $L_{\rm IR} > 10^{12}$ L$_{\odot}$) at 0.5 < z < 1, we are conducting an optical follow-up program for bright 90-$\mu$m FIR sources with a faint optical (i < 20) counterpart selected in the AKARI Far-Infrared Surveyor (FIS) Bright Source catalog (Ver.2). AKARI-FIS-V2 J0916248+073034, identified as a ULIRG at z = 0.49 in the spectroscopic follow-up observation, indicates signatures of an extremely strong outflow in its emission line profiles. Its [OIII] 5007\AA\ emission line shows FWHM of 1830 km s$^{-1}$ and velocity shift of -770 km s$^{-1}$ in relative to the stellar absorption lines. Furthermore, low-ionization [OII] 3726\AA\ 3729\AA\ doublet also shows large FWHM of 910 km s$^{-1}$ and velocity shift of -380 km s$^{-1}$. After the removal of an unresolved nuclear component, the long-slit spectroscopy 2D image possibly shows that the outflow extends to radius of 4 kpc. The mass outflow and energy ejection rates are estimated to be 500 M$_{\odot}$ yr$^{-1}$ and $4\times10^{44}$ erg s$^{-1}$, respectively, which imply that the outflow is among the most powerful ones observed in ULIRGs and QSOs at 0.3 < z < 1.6. The co-existence of the strong outflow and intense star formation (star formation rate of 990 M$_{\odot}$ yr$^{-1}$) indicates that the feedback of the strong outflow has not severely affect the star-forming region of the galaxy.}, added-at = {2019-01-18T18:02:07.000+0100}, author = {Chen, Xiaoyang and Akiyama, Masayuki and Noda, Hirofumi and Abdurrouf and Toba, Yoshiki and Yamamura, Issei and Kawaguchi, Toshihiro and Kokubo, Mitsuru and Ichikawa, Kohei}, biburl = {https://www.bibsonomy.org/bibtex/25d2bf0ae3ca46746fa94c0a767b514e2/heh15}, description = {Discovery of a strong ionized-gas outflow in an AKARI-selected Ultra-luminous Infrared Galaxy at z = 0.5}, doi = {10.1093/pasj/psz002}, interhash = {72a536cdf9d697e5496cb312ebdbf6ed}, intrahash = {5d2bf0ae3ca46746fa94c0a767b514e2}, keywords = {ULIRG outflow}, note = {cite arxiv:1901.05618Comment: 20 pages, 18 figures, accepted to be published in PASJ}, timestamp = {2019-01-18T18:02:07.000+0100}, title = {Discovery of a strong ionized-gas outflow in an AKARI-selected Ultra-luminous Infrared Galaxy at z = 0.5}, url = {http://arxiv.org/abs/1901.05618}, year = 2019 }