Table 1: Galactic B-SGs studied in this work, together with adopted photometric data. For multiple entries, see text.
Object spectral member- d V B-V $(B-V)_{\rm0}$ M_V

(HD#) type ship

185859 B0.5 Ia -7.0*

190603 B1.5 Ia+ 1.57^c 5.62 0.760 -0.16 -8.21

5.62 $0.54\pm 0.02$ -7.53

206165
B2 Ib Cep OB2 0.83^a 4.76 0.246 -0.19 -6.19

198478 B2.5 Ia Cyg OB7 0.83^a 4.81 0.571 -0.12 -6.93

4.84 $0.40\pm 0.01$ -6.37

191243 B5 Ib Cyg OB3 2.29^a 6.12 0.117 -0.12 -6.41

1.73^b -5.80

199478 B8 Iae NGC 6991 1.84^d 5.68 0.408 -0.03 -7.00

212593 B9 Iab -6.5^*

202850 B9 Iab Cyg OB4 1.00^a 4.22 0.098 -0.03 -6.18

^a Humphreys (1978); ^b Garmany & Stencel (1992); ^c Barlow & Cohen (1977);
^d Denizman & Hack (1988); ^* from calibrations (Humphreys & McElroy 1984).

**Table 1:** Galactic B-SGs studied in this work, together with adopted photometric data. For multiple entries, see text.
Object	spectral	member-	d	V	B-V	$(B-V)_{\rm0}$	M_V
(HD#)	type	ship
185859	B0.5 Ia						-7.0*
190603	B1.5 Ia+		1.57^c	5.62	0.760	-0.16	-8.21
				5.62	$0.54\pm 0.02$		-7.53
206165	B2 Ib	Cep OB2	0.83^a	4.76	0.246	-0.19	-6.19
198478	B2.5 Ia	Cyg OB7	0.83^a	4.81	0.571	-0.12	-6.93
				4.84	$0.40\pm 0.01$		-6.37
191243	B5 Ib	Cyg OB3	2.29^a	6.12	0.117	-0.12	-6.41
			1.73^b				-5.80
199478	B8 Iae	NGC 6991	1.84^d	5.68	0.408	-0.03	-7.00
212593	B9 Iab						-6.5^*
202850	B9 Iab	Cyg OB4	1.00^a	4.22	0.098	-0.03	-6.18

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