Vortex helps discover a low-mass brown dwarf around a debris disk star

The L-band vortex coronagraph installed on VLT/NACO was used to follow up the discovery of a low-mass companion around a debris disk star, obtained in the context of the SHARDDS survey (PI: Julien Milli) carried out with the 2nd generation VLT/SPHERE high-contrast imager. The NACO data obtained thanks to the vortex coronagraph demonstrate that the faint point-like source is physically associated to the star HD206893, and provide a first estimation of the infrared colors of the companion, showing an unusually red color.

Original paper: Milli et al. 2016, A&A 597, L2

Full text available on arXiv.

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