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Astronomers Surprising Discovery: Anemic Star Cluster Breaks Metal-Poor Record

23 Nov 2020, 06:04 UTC
Astronomers Surprising Discovery: Anemic Star Cluster Breaks Metal-Poor Record ESASky/CFHT

In a surprising discovery, astronomers using two Maunakea Observatories – W. M. Keck Observatory and Canada-France-Hawaii Telescope (CFHT) – have found a globular star cluster in the Andromeda Galaxy that contains a record-breaking low amount of metals.

The stars in the cluster, called RBC EXT8, have on average 800 times less iron than our Sun and are three times more iron-poor than the previous globular cluster record-holder. RBC EXT8 is also extremely deficient in magnesium.

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