HD 21278's precisely measured component masses imply an alpha Persei cluster age of about 49 Myr, younger than the lithium-depletion age of 79 Myr.
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Precise Age For The Binary HD 21278 In The Young Alpha Persei Cluster
HD 21278's precisely measured component masses imply an alpha Persei cluster age of about 49 Myr, younger than the lithium-depletion age of 79 Myr.