Radial decoupling of small and large dust grains in the transitional disk RX J1615.3-3255 - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Astronomy and Astrophysics - A&A Year : 2017

Radial decoupling of small and large dust grains in the transitional disk RX J1615.3-3255

Robin Kooistra
  • Function : Author
Inga Kamp
  • Function : Author
Misato Fukagawa
Munetake Momose
Takashi Tsukagoshi
Tomoyuki Kudo
Nobuhiko Kusakabe
  • Function : Author
Jun Hashimoto
Lyu Abe
  • Function : Author
Wolfgang Brandner
  • Function : Author
Timothy D. Brandt
  • Function : Author
Joseph C. Carson
  • Function : Author
Sebastian E. Egner
  • Function : Author
Markus Feldt
  • Function : Author
Miwa Goto
  • Function : Author
Carol A. Grady
  • Function : Author
Olivier Guyon
Yutaka Hayano
Masahiko Hayashi
  • Function : Author
Saeko S. Hayashi
  • Function : Author
Thomas Henning
Klaus W. Hodapp
  • Function : Author
Miki Ishii
  • Function : Author
Masanori Iye
Markus Janson
Ryo Kandori
Gillian R. Knapp
  • Function : Author
Masayuki Kuzuhara
Jungmi Kwon
Taro Matsuo
  • Function : Author
Michael W. Mcelwain
  • Function : Author
Shoken Miyama
Jun-Ichi Morino
  • Function : Author
Amaya Moro-Martin
Tetsuo Nishimura
  • Function : Author
Tae-Soo Pyo
Eugene Serabyn
  • Function : Author
Takuya Suenaga
  • Function : Author
Hiroshi Suto
  • Function : Author
Ryuji Suzuki
  • Function : Author
Yasuhiro H. Takahashi
  • Function : Author
Michihiro Takami
Naruhisa Takato
  • Function : Author
Hiroshi Terada
Christian Thalmann
Daigo Tomono
  • Function : Author
Edwin L. Turner
  • Function : Author
Makoto Watanabe
John Wisniewski
Toru Yamada
  • Function : Author
Hideki Takami
  • Function : Author
Tomonori Usuda
Motohide Tamura
Thayne Currie
Eiji Akiyama
Satoshi Mayama
Katherine B. Follette
  • Function : Author
Takao Nakagawa


We present H-band (1.6 μm) scattered light observations of the transitional disk RX J1615.3-3255, located in the 1 Myr old Lupus association. From a polarized intensity image, taken with the HiCIAO instrument of the Subaru Telescope, we deduce the position angle and the inclination angle of the disk. The disk is found to extend out to 68 ± 12 AU in scattered light and no clear structure is observed. Our inner working angle of 24 AU does not allow us to detect a central decrease in intensity similar to that seen at 30 AU in the 880 μm continuum observations. We compare the observations with multiple disk models based on the spectral energy distribution (SED) and submm interferometry and find that an inner rim of the outer disk at 30 AU containing small silicate grains produces a polarized intensity signal which is an order of magnitude larger than observed. We show that a model in which the small dust grains extend smoothly into the cavity found for large grains is closer to the actual H-band observations. A comparison of models with different dust size distributions suggests that the dust in the disk might have undergone significant processing compared to the interstellar medium.
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Dates and versions

insu-03692546 , version 1 (10-06-2022)



Robin Kooistra, Inga Kamp, Misato Fukagawa, François Ménard, Munetake Momose, et al.. Radial decoupling of small and large dust grains in the transitional disk RX J1615.3-3255. Astronomy and Astrophysics - A&A, 2017, 597, ⟨10.1051/0004-6361/201628696⟩. ⟨insu-03692546⟩
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