Spectroscopic confirmation establishes the first intermediate-age RR Lyrae star as a member of open cluster Trumpler 5, with velocity and [Fe/H] matching the cluster but some element depletions.
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No country for old stars -Spectroscopic confirmation of the first intermediate-age RR Lyrae in the open cluster Trumpler 5
Spectroscopic confirmation establishes the first intermediate-age RR Lyrae star as a member of open cluster Trumpler 5, with velocity and [Fe/H] matching the cluster but some element depletions.