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A gap in the planetesimal disc around HD 107146 and asymmetric warm dust emission revealed by ALMA

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Figure

Table 1. Summary of band 6 and band 7 (12m and ACA) observations. The image rms and beam size reported corresponds to briggsweighting using robust=0.5.
Figure 2. Average intensity (top) and spectral index (bottom)profile computed azimuthally averaging the Clean and spectral in-dex maps over ellipses oriented as the disc in the sky
Table 2. Best fit parameters of the ALMA data for the differ-ent parametric models. The quoted values correspond to the me-dian, with uncertainties based on the 16th and 84th percentilesof the marginalised distributions or upper limits based on 95thpercentile.
Figure 3. Deprojected and binned visibilities assuming a disc po-sition angle of 153◦ and inclination of 19◦
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