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Rare Dwarf Galaxy Loses Star-Forming Gas, Researchers Find

11/9/2025

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Summary

Story summary

AGC 727130, a dwarf galaxy about 100 million light-years away, loses its star-forming gas to ram pressure stripping by the cosmic web.
Columbia University researchers observed this with the Very Large Array (VLA) in New Mexico.
AGC 727130 is one of the rare quenched dwarf galaxies outside massive host galaxies.
The finding may address the missing satellite problem in cosmology by showing quenching can occur far from larger galaxies.

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Story summary

AGC 727130, a dwarf galaxy about 100 million light-years away, loses its star-forming gas to ram pressure stripping by the cosmic web.
Columbia University researchers observed this with the Very Large Array (VLA) in New Mexico.
AGC 727130 is one of the rare quenched dwarf galaxies outside massive host galaxies.
The finding may address the missing satellite problem in cosmology by showing quenching can occur far from larger galaxies.