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Carniani, S, Maiolino, R, Smit, R and Amorin, R (2018) ALMA Detection of Extended [CII] Emission in Himiko at z=6.6. The Astrophysical Journal Letters, 854 (1). ISSN 2041-8205
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ALMA Detection of Extended [CII] Emission in Himiko at z=6.6.pdf - Accepted Version Download (1MB) | Preview |
Abstract
Himiko is one of the most luminous Lyα emitters at z = 6.595. It has three star-forming clumps detected in the rest-frame UV, with a total SFR = 20 M ⊙ yr−1. We report the Atacama Large Millimeter/submillimeter Array (ALMA) detection of the [C ii]158 μm line emission in this Galaxy with a significance of 8σ. The total [C ii] luminosity (L [C ii] = 1.2 × 108 L ⊙) is fully consistent with the local L [C ii]–SFR relation. The ALMA high-angular resolution reveals that the [C ii] emission is made of two distinct components. The brightest [C ii] clump is extended over 4 kpc and is located on the peak of the Lyα nebula, which is spatially offset by 1 kpc relative to the brightest UV clump. The second [C ii] component is spatially unresolved (size <2 kpc) and coincident with one of the three UV clumps. While the latter component is consistent with the local L [C ii]–SFR relation, the other components are scattered above and below the local relation. We shortly discuss the possible origin of the [C ii] components and their relation with the star-forming clumps traced by the UV emission.
| Item Type: | Article |
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| Uncontrolled Keywords: | Science & Technology; Physical Sciences; Astronomy & Astrophysics; galaxies: evolution; galaxies: formation; galaxies: high-redshift; infrared: ISM; LINE EMISSION; GALAXIES; Science & Technology; Physical Sciences; Astronomy & Astrophysics; galaxies: evolution; galaxies: formation; galaxies: high-redshift; infrared: ISM; LINE EMISSION; GALAXIES; Astronomy & Astrophysics; 0201 Astronomical and Space Sciences |
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
| Divisions: | Astrophysics Research Institute |
| Publisher: | American Astronomical Society |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 16 Nov 2022 10:00 |
| Last Modified: | 16 Nov 2022 10:00 |
| DOI or ID number: | 10.3847/2041-8213/aaab45 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/18138 |
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