Fig. 2: Geometric model of WR140’s circumstellar dust structure. | Nature

Fig. 2: Geometric model of WR140’s circumstellar dust structure.

From: Radiation-driven acceleration in the expanding WR140 dust shell

Fig. 2

ad, Model images at ϕ = 0.592 simulated under four different variants of the geometric model. The four models assume that the dust production rate is uniform (a), orbitally modulated (b), azimuthally asymmetric (c) and both orbitally modulated and azimuthally asymmetric (d). An animation showing the evolution of the model in time is available in Supplementary Video 1. eh, The outline of the ‘orbital + azimuthal’ model overlaid on the observations at three different epochs, in which eg show models at orbital phases of 0.592, 0.111 and 0.043 adjusted for dust acceleration, whereas h shows a model at an orbital phase of 0.043 that is not adjusted for acceleration, resulting in a clear misfit to the data. The scale bar in each panel indicates 0.3 arcsec.

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