A gap in HD 92945’s broad planetesimal disc revealed by ALMA
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In the last few years, multiwavelength observations have revealed the
ubiquity of gaps/rings in circumstellar discs. Here we report the first ALMA
observations of HD 92945 at 0.86 mm, that reveal a gap at about 73$\pm$3 au
within a broad disc of planetesimals that extends from 50 to 140 au. We find
that the gap is
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1365-2966