[en] Most debris disks resolved so far show extended structures located at tens to hundreds AU from the host star, and are more analogous to our solar system's dusty Kuiper belt than to the AU-scale zodiacal disk inside our solar system's asteroid belt. Over the last few years however, a few hot debris disks have been detected around a handful of main sequence stars thanks to the advance of infrared interferometry. The grain populations derived from these observations are quite intriguing, as they point towards very high dust replenishment rates, high cometary activity or major collisional events. In this talk, we review the ongoing efforts to detect bright exozodiacal disks with precision near-infrared interferometry in both hemispheres with CHARA/FLUOR and VLTI/PIONIER. We discuss preliminary statistical trends on the occurrence of bright exozodi around nearby main sequence stars and show how this information could be used to constrain the global architecture and evolution of debris disks.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Defrere, Denis ; Max Planck Institut für Radioastronomie, Bonn, Germany (ddefrere@mpifr-bonn.mpg.de)
Absil, Olivier ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Augereau, J. C.; IPAG-UMR 5274, CNRS and Université Joseph Fourier, Grenoble, France
di Folco, E.; LAB-UMR 5804, CNRS and Université de Bordeaux, Bordeaux, France
Coudé Du Foresto, V.; LESIA-UMR 8109, CNRS and Observatoire de Paris-Meudon, Paris, France
Le Bouquin, J. B.; IPAG-UMR 5274, CNRS and Université Joseph Fourier, Grenoble, France
Mérand, A.; European Southern Observatory, Santiago, Chile
Mollier, B.; LESIA-UMR 8109, CNRS and Observatoire de Paris-Meudon, Paris, France
Language :
English
Title :
Imaging the inner regions of debris disks with near-infrared interferometry
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