Newly discovered group hosts two optically dark star-forming galaxies

An international team of astronomers reports the discovery of a new compact galaxy group using the Atacama Large Millimeter/submillimeter Array (ALMA). The new group, designated CGG-z4, hosts two optically dark star-forming galaxies. The finding was detailed in a research paper published(https://arxiv.org/abs/2501.05288) Jan. 9 on the pre-print server arXiv.

https://phys.org/news/2025-01-newly-group-hosts-optically-dark.html

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