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Individual sheet: WR11
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Spectral type(s): WC8 + O7.5
Multiplicity:
Confirmed binary system
Period(s) : 78.53 d
Orbital solution: yes
Ref: Schmutz et al. (1997), North et al. (2007)
Quality flag (Q): II
Comments:
This is the nearest system in the catalogue.
The non-thermal nature of the radio emission has not been confirmed by the in-depth study by Benaglia (2016). The radio investigation down to decametric wavelength by Benaglia et al. (2019) confirmed the thermal nature of the radio emission.
However, it is spatially coincident with a Fermi gamma-ray source (Pshirkov 2015). A follow-up study based on more Fermi data confirmed a modulation of the gamma-ray emission compatible with the orbit (Marti-Devesa et al. 2020). This is considered as a confirmation of physical association of the gamma-ray source with WR11, that is therefore the second gamma-ray emitting PACWB (after Eta Car).