Massive binaries in the Cepheus OB2/3 region - Constraining the formation mechanism of massive stars

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Table 1

List of multiple systems.

Name	Sp. Type	Sep.[′′]	PA[deg]	Cp.	New⁰

BHJ5	A0V	0.39	254	1	y
BD+57 2355	A4	0.49	256	1	y
BD+61 2218	B3V	0.46	94	1	y
BD+61 2355	B7IV	0.35	127	2	y
		0.89	3.11		y
BD+62 2127¹	B2IV-V	0.77	193	2?	y
BD+62 2136	B0.5V	1.89	347	1	c³
BD+62 2142⁴	B3V			1
BD+622155⁵	B2IV	1.69	342	2	c³
BD+622166	B1V	2.46	17	1	y
DG 39	A0	10.19	55.6	0	nc³
DG 45	A3V	1.64	169	1	y
DG 65	A7	2.6	15	1	y
DG 682	A2	1.21	291	1	y
HD 203025⁶	B2III	0.08	271	2	y
		4.18	275		c³
HD 203374	B0IV	0.3	298	1	c⁷
HD 204827⁸	O9.5-B0V	0.09	184	2?	nc⁷
		3.94	340		nc³
HD 205329	B5V	0.11	297	1	c³
HD 206267⁴	O6e	0.11	225	2	c⁹
		1.74	320		nc³
HD 207538¹	B0-O9V			1?
HD 208095¹⁰	B6IV-V			1
HD 208106¹¹	B2-3V			1
HD 208392¹⁰	B0.5-1V	0.1	212	2	y
HD 208905	B1-2V	0.42	171.2	1	c³
HD 208106¹¹	B2-3V			1
HD 208392¹⁰	B0.5-1V			1
HD 208905	B1-2V	0.42	171.2	1	c³
HD 209339	B0IV	0.97	224	1	c⁷
HD 209481¹¹	O9V			1
HD 209744	B1-2V	0.36	230	1	c³
		14.88	291		nc³
		17.51	335		nc³
HD 210478¹¹	B1-2V			1
HD 213023	O9V	1.74	345	1	c³
HD 216629⁶¹¹	B2-3IV-V			1
HD 216658	B0-0.5V	0.71	60	1	y
HD 216711¹¹¹²	B1V	0.76	41	3	y
		1.00	194		y
HD 217061¹²	B1V	0.08	324	2	y
HD 217174	A1V	0.98	290	1	c³
HD 217297	B1.5V	0.16	284	1	c⁵
HD 217463¹¹	B1.5-2V	0.55	14	2	c⁷
HD 217966	B7V	0.78	243	1	y
HD 218066¹⁰¹¹	B0-1V	0.46	246	2	c⁷
HD 218537	B3V	0.2	312	1	c⁷
HD 239581	B2V	0.15	343	1	y
HD 239649	B3	0.45	328	1	y
HD 239675	B5	0.32	54	1	c⁷
HD 239676¹¹	B2V			1
HD 239767¹¹	B0.5V			1
MVA 497	A1	1.24	42	1	y
MVA 497	A1	1.24	42	1	y
SBZ 2-46	A0	0.81	76	1	y
Tr 37 185	A1	0.08	15	1	y
V497 Cep⁶¹¹	B3V+B5V			1

Notes.

⁽⁰⁾

y: new detection, c: confirmation of companion, nc: no confirmation of companion,

⁽¹⁾

Elongated PSF, potential unresolved companion,

⁽²⁾

Potential spectroscopic binary (SB) Blaauw et al. (1959),

⁽³⁾

Dommanget & Nys (2002),

⁽⁴⁾

SB Garrison (1970),

⁽⁵⁾

SB Pourbaix et al. (2004),

⁽⁶⁾

SB Hill (1967),

⁽⁷⁾

Fabricius et al. (2002),

⁽⁸⁾

Potential SB Mason et al. (1998),

⁽⁹⁾

Stickland (1995),

⁽¹⁰⁾

SB (Batten et al. 1978),

⁽¹¹⁾

Eclipsing binary (EB) Samus et al. (2004),

⁽¹²⁾

SB Doremus (1970).

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