The nearby eclipsing stellar system $\delta$ Velorum - I. Origin of the infrared excess from VISIR and NACO imaging

@article{Kervella2009TheNE,
  title={The nearby eclipsing stellar system \$\delta\$ Velorum - I. Origin of the infrared excess from VISIR and NACO imaging},
  author={Pierre Kervella and Fr'ed'eric Th'evenin and Monika G. Petr-Gotzens},
  journal={Astronomy and Astrophysics},
  year={2009},
  volume={493},
  pages={107-114}
}
Context. The triple stellar system δ Vel system presents a significant infrared excess, whose ori gin is still being debated. A large infrared bow shock has been discovered using Spitzer/MIPS observations. Although it appears as a significant cont ributor to the measured IR excess, the possibility exists that a circumste llar IR excess is present around the stars of the system. Aims. The objective of the present VISIR and NACO observations is to identify whether one of the stars of theδ Vel… 

The nearby eclipsing stellar system δ Velorum - IV. Differential astrometry with VLT/NACO at the 100 microarcsecond level

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