Determine the radial distribution of the hot exozodiacal emission

Determine the precise radial distribution of the hot exozodiacal emission around β Pictoris, including whether its compact component is better represented by a ring or a two-dimensional Gaussian distribution.

Background

The MATISSE observations constrain the hot-dust emission to a compact region near 0.05 au, but the available visibility data do not resolve its detailed radial structure. The analysis compares Gaussian and Gaussian-ring brightness models, yet neither geometry is statistically preferred. Consequently, the location and structure of the inner edge and the precise radial profile remain unresolved.

References

The precise radial distribution is not constrained by the data, and both a ring and a 2D Gaussian explain the data equally well.

— VLTI/MATISSE observations of the hot dust around $β$ Pictoris: Observing faint objects with MATISSE  (2609.29783 - Priolet et al., 24 Sep 2026) in Section 5, Conclusions