Multiple stellar populations at less evolved stages - IV. Evidence of helium enrichments in four Magellanic globular clusters

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Table 2

Global parameters derived from isochrones fitting.

Cluster	Age (Gyr)	Y	Z	(m − M)₀ (mag)	E(B − V) (mag)
Hodge 11	13.5 ± 0.6	0.25	0.0005 ± 0.0001	18.58 ± 0.05	0.05 ± 0.01
NGC 1841	${13.0}_{- 0.7}^{+ 0.5}$ $13.0_{ - 0.7}^{ + 0.5}$	0.25	0.0003 ± 0.0001	18.40 ± 0.05	0.17 ± 0.01
NGC 2210	${12.5}_{- 0.8}^{+ 0.7}$ $12.5_{ - 0.8}^{ + 0.7}$	0.25	0.0002 ± 0.0001	18.40 ± 0.05	0.06 ± 0.01
NGC 2257	${12.5}_{- 0.8}^{+ 0.7}$ $12.5_{ - 0.8}^{ + 0.7}$	0.25	0.0004 ± 0.0001	18.40 ± 0.05	0.07 ± 0.01

Notes. Y is fixed at 0.25.

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