Spt2349-56: The Most Massive And Active Proto-Cluster Known At Z=4.3
As part of the follow-up of bright 1.4mm sources from the South Pole Telescope 2500 square degree survey, we have identified a unique proto-cluster at z=4.3. Using ALMA CO(4-3) and [CII] spectroscopy, we have spectroscopically confirmed at least 12 members within a radius of 13 arcseconds. These 12...
| Main Authors: | , , |
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| Format: | Still Image |
| Language: | unknown |
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Zenodo
2017
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| Online Access: | https://dx.doi.org/10.5281/zenodo.830191 https://zenodo.org/record/830191 |
| Summary: | As part of the follow-up of bright 1.4mm sources from the South Pole Telescope 2500 square degree survey, we have identified a unique proto-cluster at z=4.3. Using ALMA CO(4-3) and [CII] spectroscopy, we have spectroscopically confirmed at least 12 members within a radius of 13 arcseconds. These 12 members have a combined star formation rate of 6800 M_sol/yr, which may increase up to 22000 M_sol/yr if the entire LABOCA 870µm flux of 100 mJy is accounted for. The 12 members have a velocity dispersion of 500 km/s, implying a virial mass of ~2x10 13 M_sol. This makes SPT2349-56 a truly unique proto-cluster both in terms of mass and star-formation rate. : Poster presentation at GCF2017. |
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