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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 559517.0, MPI für Astronomie / Publikationen_mpia
Comparison of methods for detection and characterization of exoplanets with SPHERE/IRDIS
Authors:Vigan, A.; Moutou, C.; Langlois, M.; Mouillet, D.; Dohlen, K.; Boccaletti, A.; Carbillet, M.; Smith, I.; Ferrari, A.; Mugnier, L.; Thalmann, C.
Date of Publication (YYYY-MM-DD):2010
Title of Proceedings:Ground-based and Airborne Instrumentation for Astronomy III
Start Page:77352X-77352X
End Page:12
Volume (in Series):7735
Name of Conference/Meeting:Ground-based and Airborne Instrumentation for Astronomy III
Audience:Not Specified
Abstract / Description:SPHERE is a second generation instrument for the Very Large Telescope (VLT) which will aim at directly detecting the intrinsic flux of young giant exoplanets thanks to a dedicated extreme adaptive optics system and coronagraphs. Exoplanet detection in the near-infrared will be performed in parallel with an integral field spectrograph and a differential imager, IRDIS. IRDIS main mode for exoplanet detection will be Dual- Band Imaging (DBI) where two images are acquired simultaneously at close wavelengths around expected sharp features in cold planetary objects spectra. We present here the end-to-end simulations performed to obtain realistic data for IRDIS in DBI mode with temporal evolution of the quasi-static speckle pattern. Data cubes have been generated to represent 4 hour observations in IRDIS filter pairs for various star magnitudes and planets at angular separations from 0."2 to 2".0. Using this unique set of data, we present a comparison of various data analysis methods for high-contrast imaging with IRDIS in DBI mode both in terms of detection limits and of estimation of the exoplanet flux after speckle noise attenuation.
Comment of the Author/Creator:Date: 2010, July 1, 2010
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Astronomie
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