Extended Data Fig. 7: H–R diagrams with stellar tracks at multiple metallicities. | Nature

Extended Data Fig. 7: H–R diagrams with stellar tracks at multiple metallicities.

From: A highly magnified star at redshift 6.2

Extended Data Fig. 7

a–d, A star’s metallicity will affect its evolution, so to probe this effect we show here our luminosity constraints compared to stellar tracks from BoOST at metallicities of 1Z⊙ (a), 0.1Z⊙ (b), 0.02Z⊙ (c) and 0.004Z⊙ (d). The 0.1Z⊙ case is also shown in Fig. 3, and these plots are similar, including the green region allowed by our analysis. Although the tracks do exhibit some notable differences, the resulting mass estimates do not change significantly given the current large uncertainties.

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