IMAGES OF THE EXTENDED OUTER REGIONS OF THE DEBRIS RING AROUND HR 4796 A

@article{Thalmann2011IMAGESOT,
  title={IMAGES OF THE EXTENDED OUTER REGIONS OF THE DEBRIS RING AROUND HR 4796 A},
  author={Christian Thalmann and Markus Janson and Esther Buenzli and Timothy D. Brandt and John P. Wisniewski and Amaya Moro-Mart'in and Tomonori Usuda and Glenn Schneider and Joseph C. Carson and Michael W. McElwain and Carol A. Grady and M. Goto and Lyu Abe and Wolfgang Brandner and Carsten Dominik and Sebastian Egner and Markus Feldt and Tsubasa Fukue and Taras I. Golota and Olivier Guyon and Jun Hashimoto and Yutaka Hayano and Masao Hayashi and Saeko S. Hayashi and Th. Henning and Klaus W. Hodapp and Miki Ishii and Masanori Iye and Ryo Kandori and Gillian R. Knapp and Tomoyuki Kudo and Nobuhiko Kusakabe and Masayuki Kuzuhara and Taro Matsuo and Shoken M. Miyama and Jun-Ichi Morino and T. Nishimura and Tae-soo Pyo and Eugene Serabyn and Hiroshi Suto and Ryuji Suzuki and Y. H. Takahashi and Michihiro Takami and Naruhisa Takato and Hiroshi Terada and Dai Tomono and Edwin Lewis Turner and M. Watanabe and T. Yamada and Hideki Takami and M. Tamura Anton Pannekoek Astronomical Institute and University of Amsterdam and University of Toronto and Institute for Astronomy and Eth zurich and Department of Astrophysical Sciences and Princeton University. and University of Washington and Seattle and Department of Theoretical Astrophysics and Cab - Csicinta and Madrid and Subaru Telescope and Hilo and Steward Observatory and The University of Arizona and College of Charleston and Goddard Space Flight Center and Greenbelt and Eureka Scientific and Max Planck Institute for Radio Astronomy and Heidelberg and Laboratoire Hippolyte Fizeau and Nice and National Space Development Agency of Japan and Tokyo and University of Hawaii and University of Tokyo and Jet Propulsion Laboratory and California Institute of Technology. and Pasadena and Institute of Astronomy and Astrophysics and Academia Sinica and Taipei and Institute for Particle Physics and Mathematics of the Universe and Department of Cosmosciences and Hokkaido University and Sapporo and Astronomical Institute and Tohoku University and Sendai},
  journal={The Astrophysical Journal Letters},
  year={2011},
  volume={743}
}
We present high-contrast images of HR 4796 A taken with Subaru/HiCIAO in the H band, resolving the debris disk in scattered light. The application of specialized angular differential imaging methods allows us to trace the inner edge of the disk with high precision and reveals a pair of “streamers” extending radially outward from the ansae. Using a simple disk model with a power-law surface brightness profile, we demonstrate that the observed streamers can be understood as part of the smoothly… 

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