Explaining the high nitrogen abundances observed in high-z galaxies via population III stars of a few thousand solar masses

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Volume 683 (March 2024)

A&A, 683 (2024) A156

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Table 1.

Mean abundances in the mass fraction of different chemical species in the mass ejected by 11 massive Pop III star models.

M_tot	M_CO

(M_⊙)	(M_⊙)	10%					40%					CO core
491	104	0.360	0.430	0.002	0.056	0.150	0.256	0.450	0.002	0.079	0.210	0.235	0.451	0.002	0.084	0.224
771	165	0.319	0.460	0.002	0.053	0.162	0.235	0.466	0.002	0.074	0.218	0.217	0.465	0.002	0.079	0.232
778	163	0.299	0.473	0.003	0.038	0.180	0.240	0.454	0.002	0.058	0.235	0.220	0.447	0.002	0.065	0.253
932	247	0.339	0.588	0.002	0.056	0.015	0.185	0.682	0.002	0.102	0.028	0.161	0.695	0.003	0.108	0.031
1135	440	0.204	0.669	0.003	0.086	0.038	0.124	0.691	0.003	0.122	0.058	0.115	0.691	0.005	0.126	0.063
1331	317	0.293	0.519	0.005	0.067	0.114	0.201	0.528	0.003	0.103	0.163	0.186	0.528	0.003	0.108	0.172
1662	630	0.198	0.766	0.001	0.031	0.004	0.095	0.852	0.001	0.047	0.004	0.078	0.864	0.002	0.050	0.006
1923	746	0.232	0.577	0.001	0.046	0.137	0.181	0.573	0.001	0.061	0.174	0.171	0.571	0.001	0.064	0.183
3053	650	0.202	0.737	0.000	0.018	0.004	0.202	0.737	0.000	0.022	0.004	0.157	0.765	0.001	0.033	0.012
4477	759	0.297	0.687	0.000	0.015	0.001	0.153	0.816	0.001	0.029	0.001	0.073	0.884	0.003	0.034	0.006
6127	1252	0.173	0.779	0.001	0.039	0.006	0.079	0.855	0.001	0.056	0.008	0.040	0.875	0.004	0.060	0.017

Notes. The first column shows the final mass of each model and the second column depicts the mass of CO core at the end of core helium burning. The next 5 columns depict the mean abundances (see Eq. (1)) in the mass fraction for ¹H, ⁴He, ¹²C, ¹⁴N and ¹⁶O when the outermost 10% of total mass is ejected. The following five columns are the mean abundance in the ejecta when 40% of the outermost total mass is ejected and the final five columns when all the mass above CO core is ejected.

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