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Table 3

Computed Lyman continuum flux of the hot stars of the CMa OB1 association.

Star Sp. Type log
(SIMBAD) (s−1)
HD 54662(2) O6.5 V (a) 48.88
HD 53975 O7.5V z(c) 48.61
HD 57682(3) O9.2IV(b) 47.97
HD 54879 O9.7V(c) 47.88
HD 53974 B2I a/ab(d)
HD 53755 B1II/III(d)
HD 53456 B1Ib/II(d)
HD 53367(4) B0IV/Ve(e)
HD 53623(5) B0V(f)

Notes. Runaways are indicated in italics. (1)Values from Martins et al. (2005), Table 4. (2)This runaway could be a spectroscopic binary, both with spectral types O6.5V, according to Mossoux et al. (2018). (3) This runaway is ~ 5° away from the nebula (see Fig. 1). (4)Ionizes the IC 2177 nebula. (5)Ionizes the Sh 2-297 nebula.

References. For spectral types: (a)Mossoux et al. (2018); (b)Sota et al. (2014); (c)Sota et al. (2011); (d)Houk & Swift (1999); (e)Tjin A Djie et al. (2001); (f)Houk & Smith-Moore (1988).

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