Constraining the overcontact phase in massive binary evolution - II. Period stability of known O+O overcontact systems

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Table 1.

Selected orbital parameters for each of the systems in our sample.

	P_orb	M₁	M₂	q (M₁/M₂)	f	Reference
	[d]	[M_⊙]	[M_⊙]
LSS 3074	2.1852	17.2 ± 1.4	14.8 ± 1.1	0.86 ± 0.04	1.05	Raucq et al. (2017)
MY Cam	1.1754514	37.7 ± 1.6	31.6 ± 1.4	0.84 ± 0.03	1.01	Lorenzo et al. (2014)
SMC 108086	0.8830987	16.9 ± 1.2	14.3 ± 1.7	0.85 ± 0.06	1.70	Hilditch et al. (2005)
TU Mus	1.387282	16.7 ± 0.4	10.4 ± 0.4	0.623 ± 0.009	1.12	Penny et al. (2008)
V382 Cyg	1.885545	26.1 ± 0.4	19.0 ± 0.3	0.727 ± 0.005	1.10	Martins et al. (2017)
VFTS 352	1.1241452	28.9 ± 0.3	28.6 ± 0.3	0.99 ± 0.10	1.28	Almeida et al. (2015)

Notes. The last column indicates the reference from which the orbital solutions were derived. We note that while the other parameters come directly from each of these papers, the fillout factors were calculated using Eq. (1) as described in Sect. 2.

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