The Extended [CII] under Construction? Observation of the Brightest High-z Lensed Star-forming Galaxy at z=6.2

Yoshinobu Fudamoto; Akio K. Inoue; Dan Coe; Brian Welch; Ana Acebron; Massimo Ricotti; Nir Mandelker; Rogier A. Windhorst; Xinfeng Xu; Yuma Sugahara; Franz E. Bauer; Maruša Bradač; Larry D. Bradley; Jose M. Diego; Michael Florian; Brenda Frye; Seiji Fujimoto; Takuya Hashimoto; Alaina Henry; Guillaume Mahler; Pascal A. Oesch; Swara Ravindranath; Jane Rigby; Keren Sharon; Victoria Strait; Yoichi Tamura; Michele Trenti; Eros Vanzella; Erik Zackrisson; Adi Zitrin

doi:https://doi.org/10.3847/1538-4357/ad0f95

The Extended [CII] under Construction? Observation of the Brightest High-z Lensed Star-forming Galaxy at z=6.2

Yoshinobu Fudamoto, Akio K. Inoue, Dan Coe, Brian Welch, Ana Acebron, Massimo Ricotti, Nir Mandelker, Rogier A. Windhorst, Xinfeng Xu, Yuma Sugahara, Franz E. Bauer, Maruša Bradač, Larry D. Bradley, Jose M. Diego, Michael Florian, Brenda Frye, Seiji Fujimoto, Takuya Hashimoto, Alaina Henry, Guillaume MahlerPascal A. Oesch, Swara Ravindranath, Jane Rigby, Keren Sharon, Victoria Strait, Yoichi Tamura, Michele Trenti, Eros Vanzella, Erik Zackrisson, Adi Zitrin

Ben-Gurion University of the Negev, The Hebrew University of Jerusalem

Research output: Contribution to journal › Article › peer-review

Abstract

We present results of [C II] 158 μm emission line observations, and report the spectroscopic redshift confirmation of a strongly lensed (μ ∼ 20) star-forming galaxy, MACS0308-zD1 at z = 6.2078 ± 0.0002. The [C II] emission line is detected with a signal-to-noise ratio >6 within the rest-frame UV-bright clump of the lensed galaxy (zD1.1) and exhibits multiple velocity components; the narrow [C II] has a velocity full width half maximum (FWHM) of 110 ± 20 km s⁻¹, while broader [C II] is seen with an FWHM of 230 ± 50 km s⁻¹. The broader [C II] component is blueshifted (−80 ± 20 km s⁻¹) with respect to the narrow [C II] component, and has a morphology that extends beyond the UV-bright clump. We find that, while the narrow [C II] emission is most likely associated with zD1.1, the broader component is possibly associated with a physically distinct gas component from zD1.1 (e.g., outflowing or inflowing gas). Based on the nondetection of λ_158μm dust continuum, we find that MACS0308-zDl's star formation activity occurs in a dust-free environment indicated by a strong upper limit of infrared luminosity ≲9 × 10⁸ L_e. Targeting this strongly lensed faint galaxy for follow-up Atacama Large Millimeter/submillimeter Array and JWST observations will be crucial to characterize the details of typical galaxy growth in the early Universe.

Original language	American English
Article number	71
Journal	Astrophysical Journal
Volume	961
Issue number	1
DOIs	https://doi.org/10.3847/1538-4357/ad0f95
State	Published - 1 Jan 2024

Keywords

Galaxy evolution (594)
Galaxy formation (595)
Gravitational lensing (670)
Unified Astronomy Thesaurus concepts: High-redshift galaxies (734)

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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https://doi.org/10.3847/1538-4357/ad0f95

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Fudamoto, Y., Inoue, A. K., Coe, D., Welch, B., Acebron, A., Ricotti, M., Mandelker, N., Windhorst, R. A., Xu, X., Sugahara, Y., Bauer, F. E., Bradač, M., Bradley, L. D., Diego, J. M., Florian, M., Frye, B., Fujimoto, S., Hashimoto, T., Henry, A., ... Zitrin, A. (2024). The Extended [CII] under Construction? Observation of the Brightest High-z Lensed Star-forming Galaxy at z=6.2. Astrophysical Journal, 961(1), Article 71. https://doi.org/10.3847/1538-4357/ad0f95

@article{700d5c616ca84a61bded4d920cec3d19,

title = "The Extended [CII] under Construction? Observation of the Brightest High-z Lensed Star-forming Galaxy at z=6.2",

abstract = "We present results of [C II] 158 μm emission line observations, and report the spectroscopic redshift confirmation of a strongly lensed (μ ∼ 20) star-forming galaxy, MACS0308-zD1 at z = 6.2078 ± 0.0002. The [C II] emission line is detected with a signal-to-noise ratio >6 within the rest-frame UV-bright clump of the lensed galaxy (zD1.1) and exhibits multiple velocity components; the narrow [C II] has a velocity full width half maximum (FWHM) of 110 ± 20 km s−1, while broader [C II] is seen with an FWHM of 230 ± 50 km s−1. The broader [C II] component is blueshifted (−80 ± 20 km s−1) with respect to the narrow [C II] component, and has a morphology that extends beyond the UV-bright clump. We find that, while the narrow [C II] emission is most likely associated with zD1.1, the broader component is possibly associated with a physically distinct gas component from zD1.1 (e.g., outflowing or inflowing gas). Based on the nondetection of λ158μm dust continuum, we find that MACS0308-zDl's star formation activity occurs in a dust-free environment indicated by a strong upper limit of infrared luminosity ≲9 × 108 Le. Targeting this strongly lensed faint galaxy for follow-up Atacama Large Millimeter/submillimeter Array and JWST observations will be crucial to characterize the details of typical galaxy growth in the early Universe.",

keywords = "Galaxy evolution (594), Galaxy formation (595), Gravitational lensing (670), Unified Astronomy Thesaurus concepts: High-redshift galaxies (734)",

author = "Yoshinobu Fudamoto and Inoue, {Akio K.} and Dan Coe and Brian Welch and Ana Acebron and Massimo Ricotti and Nir Mandelker and Windhorst, {Rogier A.} and Xinfeng Xu and Yuma Sugahara and Bauer, {Franz E.} and Maru{\v s}a Brada{\v c} and Bradley, {Larry D.} and Diego, {Jose M.} and Michael Florian and Brenda Frye and Seiji Fujimoto and Takuya Hashimoto and Alaina Henry and Guillaume Mahler and Oesch, {Pascal A.} and Swara Ravindranath and Jane Rigby and Keren Sharon and Victoria Strait and Yoichi Tamura and Michele Trenti and Eros Vanzella and Erik Zackrisson and Adi Zitrin",

note = "Publisher Copyright: {\textcopyright} 2024. The Author(s).",

year = "2024",

month = jan,

day = "1",

doi = "https://doi.org/10.3847/1538-4357/ad0f95",

language = "American English",

volume = "961",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "1",

}

Fudamoto, Y, Inoue, AK, Coe, D, Welch, B, Acebron, A, Ricotti, M, Mandelker, N, Windhorst, RA, Xu, X, Sugahara, Y, Bauer, FE, Bradač, M, Bradley, LD, Diego, JM, Florian, M, Frye, B, Fujimoto, S, Hashimoto, T, Henry, A, Mahler, G, Oesch, PA, Ravindranath, S, Rigby, J, Sharon, K, Strait, V, Tamura, Y, Trenti, M, Vanzella, E, Zackrisson, E & Zitrin, A 2024, 'The Extended [CII] under Construction? Observation of the Brightest High-z Lensed Star-forming Galaxy at z=6.2', Astrophysical Journal, vol. 961, no. 1, 71. https://doi.org/10.3847/1538-4357/ad0f95

TY - JOUR

T1 - The Extended [CII] under Construction? Observation of the Brightest High-z Lensed Star-forming Galaxy at z=6.2

AU - Fudamoto, Yoshinobu

AU - Inoue, Akio K.

AU - Coe, Dan

AU - Welch, Brian

AU - Acebron, Ana

AU - Ricotti, Massimo

AU - Mandelker, Nir

AU - Windhorst, Rogier A.

AU - Xu, Xinfeng

AU - Sugahara, Yuma

AU - Bauer, Franz E.

AU - Bradač, Maruša

AU - Bradley, Larry D.

AU - Diego, Jose M.

AU - Florian, Michael

AU - Frye, Brenda

AU - Fujimoto, Seiji

AU - Hashimoto, Takuya

AU - Henry, Alaina

AU - Mahler, Guillaume

AU - Oesch, Pascal A.

AU - Ravindranath, Swara

AU - Rigby, Jane

AU - Sharon, Keren

AU - Strait, Victoria

AU - Tamura, Yoichi

AU - Trenti, Michele

AU - Vanzella, Eros

AU - Zackrisson, Erik

AU - Zitrin, Adi

PY - 2024/1/1

Y1 - 2024/1/1

N2 - We present results of [C II] 158 μm emission line observations, and report the spectroscopic redshift confirmation of a strongly lensed (μ ∼ 20) star-forming galaxy, MACS0308-zD1 at z = 6.2078 ± 0.0002. The [C II] emission line is detected with a signal-to-noise ratio >6 within the rest-frame UV-bright clump of the lensed galaxy (zD1.1) and exhibits multiple velocity components; the narrow [C II] has a velocity full width half maximum (FWHM) of 110 ± 20 km s−1, while broader [C II] is seen with an FWHM of 230 ± 50 km s−1. The broader [C II] component is blueshifted (−80 ± 20 km s−1) with respect to the narrow [C II] component, and has a morphology that extends beyond the UV-bright clump. We find that, while the narrow [C II] emission is most likely associated with zD1.1, the broader component is possibly associated with a physically distinct gas component from zD1.1 (e.g., outflowing or inflowing gas). Based on the nondetection of λ158μm dust continuum, we find that MACS0308-zDl's star formation activity occurs in a dust-free environment indicated by a strong upper limit of infrared luminosity ≲9 × 108 Le. Targeting this strongly lensed faint galaxy for follow-up Atacama Large Millimeter/submillimeter Array and JWST observations will be crucial to characterize the details of typical galaxy growth in the early Universe.

AB - We present results of [C II] 158 μm emission line observations, and report the spectroscopic redshift confirmation of a strongly lensed (μ ∼ 20) star-forming galaxy, MACS0308-zD1 at z = 6.2078 ± 0.0002. The [C II] emission line is detected with a signal-to-noise ratio >6 within the rest-frame UV-bright clump of the lensed galaxy (zD1.1) and exhibits multiple velocity components; the narrow [C II] has a velocity full width half maximum (FWHM) of 110 ± 20 km s−1, while broader [C II] is seen with an FWHM of 230 ± 50 km s−1. The broader [C II] component is blueshifted (−80 ± 20 km s−1) with respect to the narrow [C II] component, and has a morphology that extends beyond the UV-bright clump. We find that, while the narrow [C II] emission is most likely associated with zD1.1, the broader component is possibly associated with a physically distinct gas component from zD1.1 (e.g., outflowing or inflowing gas). Based on the nondetection of λ158μm dust continuum, we find that MACS0308-zDl's star formation activity occurs in a dust-free environment indicated by a strong upper limit of infrared luminosity ≲9 × 108 Le. Targeting this strongly lensed faint galaxy for follow-up Atacama Large Millimeter/submillimeter Array and JWST observations will be crucial to characterize the details of typical galaxy growth in the early Universe.

KW - Galaxy evolution (594)

KW - Galaxy formation (595)

KW - Gravitational lensing (670)

KW - Unified Astronomy Thesaurus concepts: High-redshift galaxies (734)

UR - http://www.scopus.com/inward/record.url?scp=85184495631&partnerID=8YFLogxK

U2 - https://doi.org/10.3847/1538-4357/ad0f95

DO - https://doi.org/10.3847/1538-4357/ad0f95

M3 - Article

SN - 0004-637X

VL - 961

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 71

ER -

The Extended [CII] under Construction? Observation of the Brightest High-z Lensed Star-forming Galaxy at z=6.2

Abstract

Keywords

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