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ALMA Lensing Cluste...
ALMA Lensing Cluster Survey: A spectral stacking analysis of [C II] in lensed z similar to 6 galaxies
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- Jolly, Jean Baptiste, 1990 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Knudsen, Kirsten Kraiberg, 1976 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Laporte, Nicolas (author)
- University Of Cambridge
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- Richard, Johan (author)
- Université de Lyon
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- Fujimoto, Seiji (author)
- Köpenhamns universitet,University of Copenhagen
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- Kohno, Kotaro (author)
- University of Tokyo, Japan,University of Tokyo, Japan
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- Ao, Yiping (author)
- Chinese Academy of Sciences,University of Science and Technology of China
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- Bauer, Franz E. (author)
- Pontificia Universidad Catolica de Chile,Instituto Milenio de Astrofísica,Millennium Institute of Astrophysics
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- Egami, Eiichi (author)
- University of Arizona
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- Espada, Daniel (author)
- Universidad de Granada,SKA Organisation
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- Dessauges-Zavadsky, Miroslava (author)
- Université de Genève,University of Geneva
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- Magdis, Georgios E. (author)
- Köpenhamns universitet,University of Copenhagen,Danmarks Tekniske Universitet,Technical University of Denmark
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- Schaerer, Daniel (author)
- Institut de Recherche en Astrophysique et Planétologie (IRAP),Université de Genève,University of Geneva
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- Sun, Fengwu (author)
- University of Arizona
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- Valentino, Francesco (author)
- Köpenhamns universitet,University of Copenhagen
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- Wang, Wei-Hao (author)
- Academia Sinica Taiwan
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- Zitrin, Adi (author)
- Ben-Gurion University of the Negev
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(creator_code:org_t)
- 2021-08-23
- 2021
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 652
- Related links:
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https://digibug.ugr....
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https://doi.org/10.1...
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Abstract
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- Context. The properties of galaxies at redshift z>6 hold the key to our understanding of the early stages of galaxy evolution and can potentially identify the sources of the ultraviolet radiation that give rise to the epoch of reionisation. The far-infrared cooling line of [C II] at 158 mu m is known to be bright and correlate with the star formation rate (SFR) of low-redshift galaxies, and hence is also suggested to be an important tracer of star formation and interstellar medium properties for very high-redshift galaxies. Aims. With the aim to study the interstellar medium properties of gravitationally lensed galaxies at z>6, we search for [C II] and thermal dust emission in a sample of 52 > 6 galaxies observed by the ALMA Lensing Cluster Survey. Methods. We perform our analysis using LINESTACKER, stacking both [C II] and continuum emission. The target sample is selected from multiple catalogues, and the sample galaxies have spectroscopic redshift or low-uncertainty photometric redshifts (sigma(z)<0.02) in nine galaxy clusters. Source properties of the target galaxies are either extracted from the literature or computed using spectral energy distribution fitting. Both weighted-average and median stacking are used, on both the full sample and three sub-samples. Results. Our analyses find no detection of either [C II] or continuum. An upper limit on L-[CII] is derived, implying that [C II] remains marginally consistent for low-SFR z>6 galaxies but likely is under-luminous compared to the local L-[CII]-SFR relationship. We discuss potential biases and possible physical effects that may be the cause of the non-detection. Further, the upper limit on the dust continuum implies that less than half of the star formation is obscured.
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)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Keyword
- galaxies: evolution galaxies: star formation
- galaxies: statistics
- galaxies: high-redshift
- galaxies: formation
- radio lines: galaxies
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Jolly, Jean Bapt ...
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Knudsen, Kirsten ...
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Laporte, Nicolas
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Richard, Johan
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Fujimoto, Seiji
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Kohno, Kotaro
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show more...
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Ao, Yiping
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Bauer, Franz E.
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Egami, Eiichi
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Espada, Daniel
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Dessauges-Zavads ...
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Magdis, Georgios ...
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Schaerer, Daniel
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Sun, Fengwu
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Valentino, Franc ...
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Wang, Wei-Hao
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Zitrin, Adi
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show less...
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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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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Other Physics To ...
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Astronomy and As ...
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Chalmers University of Technology