Refining open cluster parameters with Gaia XP metallicities

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Table 1

Median absolute difference and the RMSD of the parameter estimates determined with different metallicity priors with respect to B19 values.

		HRS [Fe/H]	Gaia XP [Fe/H]			No [Fe/H] assumption

			ARC	ZGR	FS
	All	0.02 ± 0.11	0.03 ± 0.13	0.04 ± 0.13	0.01 ± 0.11	−0.03 ± 0.19
∆ log(a𝑔e)	RGB	0.05 ± 0.07	0.10 ± 0.13	0.10 ± 0.14	0.07 ± 0.09	0.02 ± 0.11
	No RGB	−0.09 ± 0.14	−0.01 ± 0.14	−0.05 ± 0.13	0.00 ± 0.14	−0.09 ± 0.25

	All	−0.10 ± 0.16	−0.16 ± 0.22	−0.15 ± 0.21	−0.15 ± 0.18	−0.02 ± 0.23
∆ dm	RGB	−0.10 ± 0.18	−0.14 ± 0.22	−0.15 ± 0.20	−0.17 ± 0.19	−0.03 ± 0.17
	No RGB	−0.10 ± 0.13	−0.17 ± 0.21	−0.16 ± 0.21	−0.12 ± 0.17	0.00 ± 0.29

	All	0.07 ± 0.15	0.12 ± 0.22	0.06 ± 0.18	0.07 ± 0.17	0.04 ± 0.15
∆ A_V	RGB	0.05 ± 0.09	0.12 ± 0.21	0.02 ± 0.14	0.02 ± 0.11	0.01 ± 0.09
	No RGB	0.17 ± 0.21	0.16 ± 0.23	0.11 ± 0.22	0.12 ± 0.22	0.07 ± 0.21

	All	–	−0.15 ± 0.16	−0.09 ± 0.14	−0.05 ± 0.09	0.16 ± 0.29
∆ [Fe/H]	RGB	–	−0.19 ± 0.18	−0.12 ± 0.16	−0.06 ± 0.09	0.20 ± 0.25
	No RGB	–	−0.11 ± 0.13	−0.07 ± 0.13	−0.03 ± 0.07	0.03 ± 0.34

Notes. The results for all clusters are also shown in Fig. 6, and the results of the Gaia XP metallicities are shown in Fig. 3. They are also separated into two groups, based on the presence of RGB stars (‘RGB’: >3 stars, ‘No RGB’: ≤3 stars).

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