Selection of likely cluster members of the open cluster NGC 2547. Plot a shows the initial selection by gravity index; grey diamonds being retained and blue circles being rejected as non-members. Plot b shows selection from the remaining targets according to lithium EW; red squares being rejected as non-members. Plot c shows a histogram of measured RVs. Blue targets were identified as non members by the general screening (gravity index, lithium EW,vsini, and [FeH]). Grey targets have a probability larger than 90% of membership based on their measured RVs. White targets have a lower probability of membership and are discarded from the sample. Plot d shows the H vs. J − KS diagram colour coded according to the target selection status. Solid grey circles and triangles identify targets classed as likely cluster members retained for subsequent analysis.
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