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The Gemini NICI Planet-Finding Campaign: asymmetries in the HD 141569 disc

Authors
  • Beth A, Biller
  • Michael C, Liu
  • Ken, Rice
  • Zahed, Wahhaj
  • Eric Nielsen
  • Thomas, Hayward
  • Marc J, Kuchner
  • Laird M, Close
  • Mark, Chun
  • Christ, Ftaclas
  • Douglas W, Toomey
Type
Published Article
Journal
Monthly Notices of the Royal Astronomical Society
Publisher
Oxford University Press
Publication Date
Jul 10, 2015
Volume
450
Issue
4
Pages
4446–4457
Source
SETI Institute
License
Unknown

Abstract

We report here the highest resolution near-IR imaging to date of the HD 141569A disc taken as part of the NICI (near infrared coronagraphic imager) Science Campaign. We recover four main features in the NICI images of the HD 141569 disc discovered in previous Hubble Space Telescope (HST) imaging:(1) an inner ring/spiral feature. Once deprojected, this feature does not appear circular.(2) An outer ring which is considerably brighter on the western side compared to the eastern side, but looks fairly circular in the deprojected ...

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