Affordable Access

The Gemini NICI planet-finding campaign: The offset ring of HR 4796 A

Authors
  • Zahed, Wahhaj
  • Michael C, Liu
  • Beth A, Biller
  • Eric Nielsen
  • Thomas L, Hayward
  • Marc, Kuchner
  • Laird M, Close
  • Mark, Chun
  • Christ, Ftaclas
  • Douglas W, Toomey
Type
Published Article
Journal
ScienceOpen Astronomy & Astrophysics
Publisher
ScienceOpen
Publication Date
Jun 30, 2014
Volume
567
Pages
34–34
Source
SETI Institute
License
Unknown

Abstract

We present J, H, CH 4 short (1.578 μ m), CH 4 long (1.652 μ m) and K s-band images of the dust ring around the 10 Myr old star HR 4796 A obtained using the Near Infrared Coronagraphic Imager (NICI) on the Gemini-South 8.1 m Telescope. Our images clearly show for the first time the position of the star relative to its circumstellar ring thanks to NICI s translucent focal plane occulting mask. We employ a Bayesian Markov chain Monte Carlo method to constrain the offset vector between the two. The resulting probability ...

Report this publication

Statistics

Seen <100 times