Polarimetric measurements of protoplanetary disks with ExPo

H. Canovas Cabrera, M. Rodenhuis, S.V. Jeffers, C.U. Keller

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

    Abstract

    Polarimetry is a powerful tool for detecting and characterizing exoplanets and protoplanetary disks as light scattered from circumstellar material is linearly polarized. We present the first light results of ExPo (Extreme Polarimeter) [1], a sensitive imaging polarimeter developed at Utrecht University that works in the visible part of the spectrum. Our first light observations at the 4.2-meter William Herschel Telescope (WHT) show that ExPo can reach the high-contrast ratios that are necessary to observe protoplanetary disks. We present images of the protoplanetary disks around the Herbig Ae star AB Aurigae and the T Tauri star SU Aurigae. Our results show the power of polarimetry for future projects e.g. the ZIMPOL arm of SPHERE, and the EPOL part of EPICS
    Original languageUndefined/Unknown
    Title of host publicationExoplanets and disks: their formation and diversity: proceedings of the international conference
    Place of PublicationMelville, NY
    PublisherAmerican Institute of Physics
    Pages381-382
    Number of pages2
    Publication statusPublished - 2009

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