Spectroscopic and evolutionary analyses of the binary system AzV 14 outline paths toward the WR stage at low metallicity

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Volume 673 (May 2023)

A&A, 673 (2023) A40

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Table G.1.

Summary of the stellar parameters of the WR stars in the SMC that are used to calibrate the threshold of the optical depth τ.

star id	T_eff	R_*	log L	log Ṁ	log Ṁ_Shenar^(a)	v_∞	X_H	τ	binary	reference
[AB]	[kK]	[R_⊙]	[L_⊙]	[M_⊙ yr⁻¹]	[M_⊙ yr⁻¹]	[km s⁻¹]	[mass fr.]
1	79^(b)	5.7^(c)	6.07 ± 0.2	−5.58 ± 0.2	-5.33	1700±200	0.50 ± 0.05	0.26	—	Hainich et al. (2015)
2		9.1^(c)	5.57 ± 0.1	−5.75 ± 0.2	-5.64	900±100	0.55 ± 0.05	0.19	—	Hainich et al. (2015)
3			5.93 ± 0.05	−5.30 ± 0.1	-5.23	1500±200	0.25 ± 0.05	0.53	x	Shenar et al. (2016)
4		13.0^(c)	5.78 ± 0.1	−5.18 ± 0.2	-5.14	1000±100	0.25 ± 0.05	0.37	—	Hainich et al. (2015)
5a			6.35 ± 0.1	−4.50 ± 0.1	-4.80	2200±200	0.25 ± 0.05	0.51	x	Shenar et al. (2016)
5b			6.25 ± 0.15	−4.50 ± 0.3	-4.86	2000±200	0.25 ± 0.05	0.60	x	Shenar et al. (2016)
6			5.87 ± 0.15	−5.20 ± 0.2	-5.27	2000±200	0.25 ± 0.05	0.56	x	Shenar et al. (2018)
7			6.10 ± 0.1	−5.00 ± 0.2	-5.28	1700±200	0.15 ± 0.05	1.29	x	Shenar et al. (2016)
9	99^(b)	3.5^(c)	6.05 ± 0.2	−5.65 ± 0.2	-5.23	1800±200	0.35 ± 0.05	0.31	—	Hainich et al. (2015)
10	98^(b)	2.2^(c)	5.65 ± 0.2	−5.85 ± 0.2	-5.47	2000±200	0.35 ± 0.05	0.29	—	Hainich et al. (2015)
11	89^(b)	3.5^(c)	5.85 ± 0.2	−5.56 ± 0.2	-5.52	2200±200	0.40 ± 0.05	0.34	—	Hainich et al. (2015)
12	112^(b)	2.4^(c)	5.90 ± 0.2	−5.79 ± 0.2	-5.45	1800±200	0.20 ± 0.05	0.30	—	Hainich et al. (2015)

Notes.

^(a)

Calculated using the mass-loss recipe of Shenar et al. (2019, 2020b).

^(b)

We adopt a typical uncertainty of 10 kK (i.e., this is equivalent to one step in their used model grid).

^(c)

Calculated using Gaussian error propagation.

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