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Unraveling the Mystery of Exozodiacal Dust

  • S. Ertel (a1), J.-C. Augereau (a1), P. Thébault (a2), O. Absil (a3), A. Bonsor (a1), D. Defrère (a4), Q. Kral (a2), J.-B. Le Bouquin (a1), J. Lebreton (a1) and V. Coudé du Foresto (a2) (a5)...
Abstract

Exozodiacal dust clouds are thought to be the extrasolar analogs of the Solar System's zodiacal dust. Studying these systems provides insights in the architecture of the innermost regions of planetary systems, including the Habitable Zone. Furthermore, the mere presence of the dust may result in major obstacles for direct imaging of earth-like planets. Our EXOZODI project aims to detect and study exozodiacal dust and to explain its origin. We are carrying out the first large, near-infrared interferometric survey in the northern (CHARA/FLUOR) and southern (VLTI/PIONIER) hemispheres. Preliminary results suggest a detection rate of up to 30% around A to K type stars and interesting trends with spectral type and age. We focus here on presenting the observational work carried out by our team.

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References
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Absil, O., Defrère, D., Coudé du Foresto, V., et al. 2013, A&A, 555A, 104A
Coudé du Foresto, V., Borde, P. J., Merand, A., et al. 2003, SPIE, 4838, 280C
Di Folco, E., Absil, O., Augereau, J.-C., et al. 2007, A&A, 475, 243D
Le Bouquin, J.-B., Berger, J.-P., Lazareff, B., et al. 2011, A&A, 535A, 67L
Lebreton, J., van Lieshout, R., Augereau, J.-C., et al. 2013, A&A, 555A, 146L
Millan-Gabet, R., Serabyn, E., Mennesson, B., et al. 2011, ApJ, 734, 67M
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Proceedings of the International Astronomical Union
  • ISSN: 1743-9213
  • EISSN: 1743-9221
  • URL: /core/journals/proceedings-of-the-international-astronomical-union
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