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 5

Properties of the light curves.


ID	M_{K_s} (mag)	P (days)	P_Yang¹ (days)	P_Chatys² (days)	log(L^SED/L_⊙) (dex)	Δr_ZTF (mag)	ΔW1 (mag)	$\dot{M}$ $\[\dot{M}\]$ ⁵ (× 10⁻⁶ M_⊙ yr⁻¹)
IC10-26089	−10.22	482	406	395	${5.25}_{- 0.04}^{+ 0.04}$ $\[5.25_{-0.04}^{+0.04}\]$ ³	0.92 ± 0.07	0.45 ± 0.03	−
NGC 6822-52	−10.94	693	673	904	${5.10}_{- 0.05}^{+ 0.06}$ $\[5.10_{-0.05}^{+0.06}\]$ ³	2.49 ± 0.03	0.50 ± 0.03	${3.98}_{- 1.49}^{+ 1.38}$ $\[3.98_{-1.49}^{+1.38}\]$
NGC 6822-55	−11.13	−	769	1112	${5.21}_{- 0.05}^{+ 0.05}$ $\[5.21_{-0.05}^{+0.05}\]$ ³	0.77 ± 0.02	0.27 ± 0.02	${0.18}_{- 1.78}^{+ 0.24}$ $\[0.18_{-1.78}^{+0.24}\]$
NGC 6822-70	−10.73	−	581	715	${5.01}_{- 0.05}^{+ 0.05}$ $\[5.01_{-0.05}^{+0.05}\]$ ³	0.72 ± 0.03	0.27 ± 0.03	${2.01}_{- 0.79}^{+ 1.70}$ $\[2.01_{-0.79}^{+1.70}\]$
NGC 6822-103	−10.70	−	569	691	${5.01}_{- 0.05}^{+ 0.05}$ $\[5.01_{-0.05}^{+0.05}\]$ ³	0.58 ± 0.03	0.21 ± 0.03	${12.18}_{- 0.77}^{+ 0.60}$ $\[12.18_{-0.77}^{+0.60}\]$
NGC 6822-175	−10.11	−	376	346	${4.80}_{- 0.05}^{+ 0.05}$ $\[4.80_{-0.05}^{+0.05}\]$ ³	>1.07 ± 0.04	0.47 ± 0.04	${2.05}_{- 1.81}^{+ 7.26}$ $\[2.05_{-1.81}^{+7.26}\]$
WLM 14	−10.46	463	482	528	${4.87}_{- 0.1}^{+ 0.1}$ $\[4.87_{-0.1}^{+0.1}\]$ ⁴	0.65 ± 0.06	0.25 ± 0.07	−

Notes. (1) Calculated using the P-L relation of Yang & Jiang (2012); (2) Calculated using the P-L relation of Chatys et al. (2019); (3) de Wit et al. (2025); (4) Britavskiy et al. (2019); (5) Antoniadis et al. (2025).

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