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| Paper: |
[CII] 158μm Emission from z ≥ 10 Galaxies |
| Monograph: |
7, Science with a Next Generation Very Large Array |
| Page: |
557 |
| Authors: |
Carilli, C. L.; Murphy, E. J.; Ferrara, A.; Dayal, P. |
| Abstract: |
We consider the capabilities of ALMA and the ngVLA to detect and image the [CII] 158 μm line from galaxies into the cosmic ‘dark ages’ (z ∼ 10 to 20). The [CII] line may prove to be a powerful tool in determining spectroscopic redshifts, and galaxy dynamics, for the first galaxies. In 40 hr, ALMA has the sensitivity to detect the integrated [CII] line emission from a moderate metallicity, active star-forming galaxy [ZA = 0.2Z☉; star formation rate (SFR) = 5 M☉ yr-1], at z = 10 at a significance of 6σ. The ngVLA will detect the integrated [CII] line emission from a Milky-Way like star formation rate galaxy (ZA = 0.2Z☉, SFR = 1 M☉ yr-1), at z = 15 at a significance of 6σ. Imaging simulations show that the ngVLA can determine rotation dynamics for active star-forming galaxies at z ∼ 15, if they exist. The [CII] detection rate in blind surveys will be slow (of order unity per 40 hr pointing). |
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