First L band detection of hot exozodiacal dust with VLTI/MATISSE
Florian Kirchschlager,
Steve Ertel,
Sebastian Wolf
et al.
Abstract:For the first time we observed the emission of hot exozodiacal dust in L band. We used the new instrument MATISSE at the Very Large Telescope Interferometer to detect the hot dust around κ Tuc with a significance of 3σ to 6σ at wavelengths between 3.37 and 3.85 µm and a dust-to-star flux ratio of 5 to 7 %. We modelled the spectral energy distribution based on the new L band data alone and in combination with H band data published previously. In all cases we find 0.58 µm grains of amorphous carbon to fit the κ … Show more
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