Runaway BN supergiant star HD 93840: Progenitor of an imminent core-collapse supernova above the Galactic plane

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Table B.1.

Distance effects on stellar parameters of HD 93840.

Parameter	ADS	FASTWIND
M_V (mag)	$- 5 . 72_{- 0.21}^{+ 0.22}$ $-5.72^{+0.22}_{-0.21}$	$- 6 . 38_{- 0.30}^{+ 0.33}$ $-6.38^{+0.33}_{-0.30}$
	$- 5 . 18_{- 0.54}^{+ 0.46}$ $-5.18^{+0.46}_{-0.54}$	$- 5 . 12_{- 0.54}^{+ 0.46}$ $-5.12^{+0.46}_{-0.54}$
	$- 4 . 97_{- 0.25}^{+ 0.23}$ $-4.97^{+0.23}_{-0.25}$	$- 4 . 91_{- 0.25}^{+ 0.23}$ $-4.91^{+0.23}_{-0.25}$
M_bol (mag)	$- 7 . 75_{- 0.22}^{+ 0.23}$ $-7.75^{+0.23}_{-0.22}$	$- 8 . 62_{- 0.30}^{+ 0.34}$ $-8.62^{+0.34}_{-0.30}$
	$- 7 . 20_{- 0.55}^{+ 0.46}$ $-7.20^{+0.46}_{-0.55}$	$- 7 . 36_{- 0.55}^{+ 0.46}$ $-7.36^{+0.46}_{-0.55}$
	$- 7 . 00_{- 0.26}^{+ 0.24}$ $-7.00^{+0.24}_{-0.26}$	$- 7 . 15_{- 0.26}^{+ 0.24}$ $-7.15^{+0.24}_{-0.26}$
M (M_⊙)	17.2 ± 0.8	22.1 ± 1.9
	$10 . 8_{- 3.9}^{+ 7.3}$ $10.8^{+7.3}_{-3.9}$	$7 . 9_{- 3.1}^{+ 6.0}$ $7.9^{+6.0}_{-3.1}$
	$8 . 9_{- 2.0}^{+ 2.8}$ $8.9^{+2.8}_{-2.0}$	$6 . 5_{- 1.9}^{+ 2.8}$ $6.5^{+2.8}_{-1.9}$
R (R_⊙)	22 ± 2	29 ± 5
	$17_{- 3}^{+ 5}$ $17^{+5}_{-3}$	$17_{- 3}^{+ 5}$ $17^{+5}_{-3}$
	16 ± 2	15 ± 2
log L/L_⊙	5.00 ± 0.09	$5 . 34_{- 0.13}^{+ 0.12}$ $5.34^{+0.12}_{-0.13}$
	$4 . 78_{- 0.19}^{+ 0.22}$ $4.78^{+0.22}_{-0.19}$	$4 . 84_{- 0.19}^{+ 0.22}$ $4.84^{+0.22}_{-0.19}$
	4.70 ± 0.10	4.76 ± 0.10

Values are given for the atmospheric parameters derived using ADS and FASTWIND, for three distances: d_spec = 3740±340 pc, $d_{Gaia}^{MA}$ $d_{\rm Gaia}^\mathrm{MA}$ = $2910_{- 550}^{+ 830}$ $2910^{+830}_{-550}$ pc and $d_{Gaia}^{MA, EB}$ $d_{\rm Gaia}^\mathrm{MA,EB}$ = $2640_{- 250}^{+ 310}$ $2640^{+310}_{-250}$ pc (top to bottom).

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