Reference : A near-infrared interferometric survey for bright exozodiacal disks
Scientific conferences in universities or research centers : Scientific conference in universities or research centers
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/216864
A near-infrared interferometric survey for bright exozodiacal disks
English
Absil, Olivier mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
6-Dec-2012
International
Invited seminar at Observatoire de la Côte d'Azur
6 December 2012
Observatoire de la Côte d'Azur
Nice
France
[en] Since 2006, we have been conducting a near-infrared survey for bright exozodiacal disks using the FLUOR interferometer at the CHARA array. The first results of this survey, encompassing 42 nearby main sequence stars, will be presented and discussed. The unexpectedly high occurence rate and its apparent correlation with spectral type question the nature of the circumstellar excess emission detected at K band. I will also describe the current efforts to extend our stellar sample, including in the Southern hemisphere thanks to the PIONIER instrument at VLTI. First results obtained with VLTI/PIONIER will be discussed.
http://hdl.handle.net/2268/216864

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