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Probing dusty circumstellar environments with polarimetric aperture-masking interferometry

Norris, Barnaby R M; Tuthill, Peter G; Lacour, Sylvestre; Zijlstra, Albert A; Lykou, Foteini; Evans, Thomas M; Stewart, Paul; Bedding, Timothy Russell; Guyon, Olivier; Martinache, Frantz; Ireland, Michael

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Aperture-masking interferometry allows diffraction-limited images to be recovered despite the turbulent atmosphere. Here, this approach has been combined with polarimetry to form a novel technique allowing the dusty environments of mass-losing stars (so-called AGB stars) and proto-planetary and debris disks to be imaged, the characterisation of which is key to understanding the recycling of matter and the formation of new planetary systems. Polarimetric aperture-masking interferometry produces...[Show more]

dc.contributor.authorNorris, Barnaby R M
dc.contributor.authorTuthill, Peter G
dc.contributor.authorLacour, Sylvestre
dc.contributor.authorZijlstra, Albert A
dc.contributor.authorLykou, Foteini
dc.contributor.authorEvans, Thomas M
dc.contributor.authorStewart, Paul
dc.contributor.authorBedding, Timothy Russell
dc.contributor.authorGuyon, Olivier
dc.contributor.authorMartinache, Frantz
dc.contributor.authorIreland, Michael
dc.coverage.spatialAmsterdam
dc.date.accessioned2015-12-10T23:24:33Z
dc.date.created1 July 2012 through 6 July 2012
dc.identifier.isbn9780819491466
dc.identifier.urihttp://hdl.handle.net/1885/67240
dc.description.abstractAperture-masking interferometry allows diffraction-limited images to be recovered despite the turbulent atmosphere. Here, this approach has been combined with polarimetry to form a novel technique allowing the dusty environments of mass-losing stars (so-called AGB stars) and proto-planetary and debris disks to be imaged, the characterisation of which is key to understanding the recycling of matter and the formation of new planetary systems. Polarimetric aperture-masking interferometry produces images by exploiting the fact that starlight scattered by circumstellar dust becomes strongly polarised. Essentially, aperture-masking allows access to the small spatial scales (∼10mas) necessary while polarimetry allows light from the dust and star to be differentiated. Furthermore, measurements at multiple wavelengths allow dust grain sizes to be calculated using Mie scattering theory. Excellent results have already been obtained at near-IR wavelengths using the NACO instrument at the VLT. The next step is to leverage the higher spatial resolution and polarisation signal found in the visible, rather than near-IR. To this end, a new instrument allowing precision polarimetric aperture masking interferometry at 600-800nm is being developed for an 8m class telescope, details of which will also be presented.
dc.publisherSPIE - The International Society for Optical Engineering
dc.relation.ispartofseriesOptical and Infrared Interferometry III
dc.sourceProceedings of SPIE - The International Society for Optical Engineering
dc.subjectKeywords: AGB stars; Aperture masking interferometry; Circumstellar; Circumstellar dust; Debris disk; Diffraction limited; Dust grains; Mie scattering theory; Multiple wavelengths; Near-IR; New instrument; Novel techniques; Optical interferometric polarimetries; Op AGB stars; Aperture masking; Optical interferometric polarimetry; Optical interferometry; Transition disks
dc.titleProbing dusty circumstellar environments with polarimetric aperture-masking interferometry
dc.typeConference paper
local.description.notesImported from ARIES
local.description.refereedYes
dc.date.issued2012
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systems
local.identifier.absfor020102 - Astronomical and Space Instrumentation
local.identifier.ariespublicationU3488905xPUB1422
local.type.statusPublished Version
local.contributor.affiliationNorris, Barnaby R M, University of Sydney
local.contributor.affiliationTuthill, Peter G, University of Sydney
local.contributor.affiliationIreland, Michael, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationLacour, Sylvestre, Observatoire de Paris
local.contributor.affiliationZijlstra, Albert A, University of Manchester
local.contributor.affiliationLykou, Foteini, University of Manchester
local.contributor.affiliationEvans, Thomas M, University of Oxford
local.contributor.affiliationStewart, Paul, University of Sydney
local.contributor.affiliationBedding, Timothy Russell , University of Sydney
local.contributor.affiliationGuyon, Olivier, National Astronomical Observatory of Japan
local.contributor.affiliationMartinache, Frantz, National Astronomical Observatory of Japan
local.description.embargo2037-12-31
local.bibliographicCitation.startpage844503
local.identifier.doi10.1117/12.925838
dc.date.updated2016-02-24T09:59:47Z
local.identifier.scopusID2-s2.0-84871778537
CollectionsANU Research Publications

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