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JWST and ALMA Multi...
JWST and ALMA Multiple-line Study in and around a Galaxy at z =8.496: Optical to Far-Infrared Line Ratios and the Onset of an Outflow Promoting Ionizing Photon Escape
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- Fujimoto, Seiji (author)
- The University of Texas at Austin, USA,Köpenhamns universitet,University of Copenhagen
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- Ouchi, Masami (author)
- National Astronomical Observatory of Japan,Waseda University
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- Nakajima, Kimihiko (author)
- National Astronomical Observatory of Japan
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- Harikane, Yuichi (author)
- Waseda University
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- Isobe, Yuki (author)
- Waseda University
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- Brammer, Gabriel (author)
- Köpenhamns universitet,University of Copenhagen
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- Oguri, Masamune (author)
- Chiba University
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- Gimenez-Arteaga, Clara (author)
- Köpenhamns universitet,University of Copenhagen
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- Heintz, Kasper E. (author)
- Köpenhamns universitet,University of Copenhagen
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- Kokorev, Vasily (author)
- Köpenhamns universitet,University of Copenhagen
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- Bauer, Franz E. (author)
- Instituto Milenio de Astrofísica,Millennium Institute of Astrophysics
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- Ferrara, Andrea (author)
- Scuola Normale Superiore di Pisa
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- Kojima, Takashi (author)
- Waseda University
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- Lagos, Claudia del P. (author)
- Köpenhamns universitet,University of Copenhagen,ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D),University of Western Australia
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- Laura, Sommovigo (author)
- Scuola Normale Superiore di Pisa
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- Schaerer, Daniel (author)
- Centre national de la recherche scientifique (CNRS),Université de Genève,University of Geneva
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- Shimasaku, Kazuhiro (author)
- University of Tokyo, Japan,University of Tokyo, Japan
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- Hatsukade, Bunyo (author)
- University of Tokyo, Japan
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- Kohno, Kotaro (author)
- University of Tokyo, Japan,University of Tokyo, Japan
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- Sun, Fengwu (author)
- University of Arizona
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- Valentino, Francesco (author)
- European Southern Observatory Santiago,Köpenhamns universitet,University of Copenhagen
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- Watson, Darach (author)
- Köpenhamns universitet,University of Copenhagen
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- Fudamoto, Yoshinobu (author)
- Waseda University,National Astronomical Observatory of Japan
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- Inoue, Akio K. (author)
- Waseda University
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- Gonzalez-Lopez, Jorge (author)
- Universidad Diego Portales,Diego Portales University
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- Koekemoer, Anton M. (author)
- Space Telescope Science Institute (STScI)
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- Knudsen, Kirsten, 1976 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Lee, Minju M. (author)
- Köpenhamns universitet,University of Copenhagen,Danmarks Tekniske Universitet,Technical University of Denmark
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- Magdis, Georgios E. (author)
- Danmarks Tekniske Universitet,Technical University of Denmark,Köpenhamns universitet,University of Copenhagen
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- Richard, Johan (author)
- Université de Lyon
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- Strait, Victoria B. (author)
- Köpenhamns universitet,University of Copenhagen
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- Sugahara, Yuma (author)
- Waseda University,National Astronomical Observatory of Japan
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- Tamura, Yoichi (author)
- Nagoya University
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- Toft, Sune (author)
- Köpenhamns universitet,University of Copenhagen
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- Umehata, Hideki (author)
- Nagoya University
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- Walth, Gregory (author)
- California Institute of Technology (Caltech)
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: Astrophysical Journal. - 1538-4357 .- 0004-637X. ; 964:2
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https://research.cha... (primary) (free)
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https://research.cha...
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https://doi.org/10.3...
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Abstract
Subject headings
Close
- We present Atacama Large Millimeter/submillimeter Array (ALMA) deep spectroscopy for a lensed galaxy at z(spec) = 8.496 with log(M-star/M-circle dot) similar to 7.8 whose optical nebular lines and stellar continuum are detected by JWST/NIRSpec and NIRCam Early Release Observations in the field of SMACS J0723.3-7327. Our ALMA spectrum shows [O III] 88 mu m and [C II] 158 mu m line detections at 4.0 sigma and 4.5 sigma, respectively. The redshift and position of the [O III] line coincide with those of the JWST source, while the [C II] line is blueshifted by 90 km s(-1) with a spatial offset of 0.'' 5 (approximate to 0.5 kpc in the source plane) from the centroid of the JWST source. The NIRCam F444W image, including [O III] lambda 5007 and H beta line emission, spatially extends beyond the stellar components by a factor of >8. This indicates that the z = 8.5 galaxy has already experienced strong outflows as traced by extended [O III] lambda 5007 and offset [C II] emission, which would promote ionizing photon escape and facilitate reionization. With careful slit-loss corrections and the removal of emission spatially outside the galaxy, we evaluate the [O III] 88 mu m/lambda 5007 line ratio, and derive the electron density n (e) by photoionization modeling to be 220(-130)(+230) cm(-3), which is comparable with those of z similar to 2-3 galaxies. We estimate an [O III] 88 mu m/[C II] 158 mu m line ratio in the galaxy of >4, as high as those of known z similar to 6-9 galaxies. This high [O III] 88 mu m/[C II] 158 mu m line ratio is generally explained by the high n(e) as well as the low metallicity (Z(gas)/Z(circle dot)=0.04(-0.02)(+0.02)), high ionization parameter (log U > -2.27), and low carbon-to-oxygen abundance ratio (log(C/O) = [-0.52: -0.24]) obtained from the JWST/NIRSpec data; further [C II] follow-up observations will constrain the covering fraction of photodissociation regions.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Fujimoto, Seiji
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Ouchi, Masami
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Nakajima, Kimihi ...
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Harikane, Yuichi
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Isobe, Yuki
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Brammer, Gabriel
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show more...
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Oguri, Masamune
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Gimenez-Arteaga, ...
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Heintz, Kasper E ...
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Kokorev, Vasily
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Bauer, Franz E.
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Ferrara, Andrea
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Kojima, Takashi
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Lagos, Claudia d ...
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Laura, Sommovigo
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Schaerer, Daniel
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Shimasaku, Kazuh ...
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Hatsukade, Bunyo
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Kohno, Kotaro
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Sun, Fengwu
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Valentino, Franc ...
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Watson, Darach
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Fudamoto, Yoshin ...
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Inoue, Akio K.
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Gonzalez-Lopez, ...
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Koekemoer, Anton ...
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Knudsen, Kirsten ...
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Lee, Minju M.
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Magdis, Georgios ...
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Richard, Johan
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Strait, Victoria ...
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Sugahara, Yuma
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Tamura, Yoichi
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Toft, Sune
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Umehata, Hideki
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Walth, Gregory
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
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Astrophysical Jo ...
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Chalmers University of Technology