TY - JOUR
T1 - ALMA detection of the [OIII] 88 μm line in a highly-magnified Lyman break galaxy at z = 6.1
AU - Sunaga, Kaho
AU - Tamura, Yoichi
AU - Lee, Minju
AU - Mawatari, Ken
AU - Inoue, Akio K.
AU - Hashimoto, Takuya
AU - Matsuo, Hiroshi
AU - Taniguchi, Akio
N1 - Publisher Copyright:
© International Astronomical Union 2020.
PY - 2019
Y1 - 2019
N2 - We present a 4.7σ detection of the [OIII] 88 μm line in a gravitationally-lensed Lyman break galaxy, RXC J2248-ID3, using the Atacama Large Millimeter/submillimeter Array (ALMA). We did not detect [CII] 158 μm and rest-frame 90 μm dust continuum emission, suggesting that the bulk of the interstellar medium (ISM) is ionized. Our two-component SED model combining the previous Hubble Space Telescope (HST) data and new photometry obtained from Very Large Telescope (VLT), Spitzer and ALMA suggests the presence of young (∼2 Myr) and mature (∼600 Myr) stellar components with the metallicity of Z = 0.2Z . Our findings are in contrast with previous results claiming a very young, metal-poor stellar component.
AB - We present a 4.7σ detection of the [OIII] 88 μm line in a gravitationally-lensed Lyman break galaxy, RXC J2248-ID3, using the Atacama Large Millimeter/submillimeter Array (ALMA). We did not detect [CII] 158 μm and rest-frame 90 μm dust continuum emission, suggesting that the bulk of the interstellar medium (ISM) is ionized. Our two-component SED model combining the previous Hubble Space Telescope (HST) data and new photometry obtained from Very Large Telescope (VLT), Spitzer and ALMA suggests the presence of young (∼2 Myr) and mature (∼600 Myr) stellar components with the metallicity of Z = 0.2Z . Our findings are in contrast with previous results claiming a very young, metal-poor stellar component.
KW - galaxies: high-redshift
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U2 - 10.1017/S174392131900245X
DO - 10.1017/S174392131900245X
M3 - Article
AN - SCOPUS:85106787533
SN - 1743-9213
VL - 15
SP - 309
EP - 311
JO - Proceedings of the International Astronomical Union
JF - Proceedings of the International Astronomical Union
IS - S341
ER -