Investigating episodic mass loss in evolved massive stars - IV. Comprehensive analysis of dusty red supergiants in NGC 6822, IC 10, and WLM

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Volume 704 (December 2025)

A&A, 704 (2025) A96

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Table 4

Effective temperatures for our targets obtained using different methods.


Object	$T_{eff}^{J, fit}$ $\[T_{\text {eff}}^{J, \text {fit}}\]$ (K)	$T_{eff}^{J, P 15}$ $\[T_{\text {eff }}^{J, \mathrm{P} 15}\]$ (K)^a	$T_{eff}^{J - K_{s}}$ $\[T_{\text {eff}}^{J-K_{s}}\]$ (K)^b	$T_{eff}^{MARCS}$ $\[T_{\text {eff}}^{\text {MARCS}}\]$ (K)^c	$T_{eff}^{T i O}$ $\[T_{\text {eff}}^{\mathrm{TiO}}\]$ (K)	$T_{eff, J}^{s c a l e d}$ $\[T_{\text {eff}, \mathrm{J}}^{scaled}\]$ (K)^f	$T_{eff}^{J - K}$ $\[T_{\text {eff }}^{J-K}\]$ (K) ^g
IC10-26089	−	−	4045 ± 48	4058 ± 125	4273^d ± 50	4137 ± 12	3800 ± 150
NGC 6822-52	−	−	4027 ± 48	4029 ± 124	3351^d ± 50	−	3802 ± 150
NGC 6822-55	$4286_{- 145}^{+ 136}$ $\[4286_{-145}^{+136}\]$	3860 ± 70	4034 ± 48	4044 ± 124	4021^d ± 50	4075 ± 12	−
NGC 6822-70	$3688_{- 124}^{+ 153}$ $\[3688_{-124}^{+153}\]$	−	3957 ± 48	3848 ± 124	3520^d ± 50	3955 ± 12	3631 ± 150
NGC 6822-103	$3845_{- 108}^{+ 115}$ $\[3845_{-108}^{+115}\]$	−	3974 ± 48	3892 ± 124	3681^d ± 50	3993 ± 12	3715 ± 150
NGC 6822-175	$4383_{- 108}^{+ 80}$ $\[4383_{-108}^{+80}\]$	3985 ± 70	4003 ± 48	3964 ± 124	3537^d ± 50	3959 ± 12	3548 ± 150
WLM 14	$4349_{- 233}^{+ 104}$ $\[4349_{-233}^{+104}\]$	−	4142 ± 48	4338 ± 122	3850^(e) ± 80	4034 ± 12	−

Notes. ^(a) Mean value of the two T_eff reported in Patrick et al. (2015). Error bar reported here is the mean of their associated error bars. ^(b) Calculated using the empirical T_eff(J − K_s)₀ relation in de Wit et al. (2024; Table 5). Error bars determined using error propagation. ^(c) Calculated using the theoretical T_eff (J − K_s)₀ relation from MARCS synthetic photometry in de Wit et al. (2024; Table 5). Error bars determined using error propagation. ^(d) Values taken from de Wit et al. (2025). ^(e) Value taken from Britavskiy et al. (2019). ^(f) Values calculated using the scaling relation for the J-band of de Wit et al. (Eq. 2; 2024). ^(g) Values taken from Dimitrova et al. (2020) for IC10-26089 and Dimitrova et al. (2022) for the targets in NGC 6822.

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