Diffraction-limited polarimetric imaging of protoplanetary disks and mass-loss shells with VAMPIRES

Barnaby R.M. Norris, Peter Tuthill, Nemanja Jovanovic, Julien Lozi, Olivier Guyon, Nick Cvetojevic, Frantz Martinache

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

Abstract

Both the birth and death of a stellar system are areas of key scientific importance. Whether it's understanding the process of planetary formation in a star's early years, or uncovering the cause of the enormous mass-loss that takes place during a star's dying moments, a key to scientific understanding lies in the inner few AU of the circumstellar environment. Corresponding to scales of 10s of milli-arcseconds, these observations pose a huge technical challenge due to the high angular-resolutions and contrasts required. A major stumbling block is the problem of the Earth's own atmospheric turbulence. The other difficulty is that precise calibration is required to combat the extremely high contrast ratios and high resolutions faced. By taking advantage of the fact that starlight scattered by dust in the circumstellar region is polarized, differential polarimetry can help achieve this calibration. Spectral features can also be utilized.

Original languageEnglish (US)
Title of host publicationAdvances in Optical Astronomical Instrumentation 2019
EditorsSimon Ellis, Celine d'Orgeville
PublisherSPIE
ISBN (Electronic)9781510631465
DOIs
StatePublished - Jan 1 2020
Externally publishedYes
EventAdvances in Optical Astronomical Instrumentation 2019 - Melbourne, Australia
Duration: Dec 9 2019Dec 12 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11203
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceAdvances in Optical Astronomical Instrumentation 2019
CountryAustralia
CityMelbourne
Period12/9/1912/12/19

Keywords

  • Aperture masking
  • Exoplanets
  • Interferometry
  • Polarimetry
  • Protoplanetary disks
  • Subaru telescope

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Norris, B. R. M., Tuthill, P., Jovanovic, N., Lozi, J., Guyon, O., Cvetojevic, N., & Martinache, F. (2020). Diffraction-limited polarimetric imaging of protoplanetary disks and mass-loss shells with VAMPIRES. In S. Ellis, & C. d'Orgeville (Eds.), Advances in Optical Astronomical Instrumentation 2019 [112030S] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11203). SPIE. https://doi.org/10.1117/12.2539998