Fig. 1: ALMA 1.3 mm continuum image of the HD 98800 dust disk, showing a narrow dust ring 3.5 au in radius that is 2 au wide. | Nature Astronomy

Fig. 1: ALMA 1.3 mm continuum image of the HD 98800 dust disk, showing a narrow dust ring 3.5 au in radius that is 2 au wide.

From: A circumbinary protoplanetary disk in a polar configuration

Fig. 1

White semi-transparent lines show the orbits of the inner binary (BaBb) and the path of the outer binary (AaAb) with respect to BaBb, with dots at the star locations at the time of the ALMA observation. The resolution of these ‘uniformly weighted’ images (32 × 25 milliarcsec2, or 1.4 × 1.1 au2) is given by the ellipse in the lower left corner. Left, entire system. Right, magnification of BaBb.

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