NEAR-IR POLARIZED SCATTERED LIGHT IMAGERY of the DoAr 28 TRANSITIONAL DISK

Evan A. Rich, John P. Wisniewski, Satoshi Mayama, Timothy D. Brandt, Jun Hashimoto, Tomoyuki Kudo, Nobuhiko Kusakabe, Catherine Espaillat, Lyu Abe, Eiji Akiyama, Wolfgang Brandner, Joseph C. Carson, Thayne Currie, Sebastian Egner, Markus Feldt, Kate Follette, Miwa Goto, Carol A. Grady, Olivier Guyon, Yutaka HayanoMasahiko Hayashi, Saeko S. Hayashi, Thomas Henning, Klaus W. Hodapp, Miki Ishii, Masanori Iye, Markus Janson, Ryo Kandori, Gillian R. Knapp, Masayuki Kuzuhara, Jungmi Kwon, Taro Matsuo, Michael W. McElwain, Shoken Miyama, Jun Ichi Morino, Amaya Moro-Martin, Tetsuo Nishimura, Tae Soo Pyo, Chunhua Qi, Eugene Serabyn, Takuya Suenaga, Hiroshi Suto, Ryuji Suzuki, Yasuhiro H. Takahashi, Michihiro Takami, Naruhisa Takato, Hiroshi Terada, Christian Thalmann, Daigo Tomono, Edwin L. Turner, Makoto Watanabe, Toru Yamada, Hideki Takami, Tomonori Usuda, Motohide Tamura

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

We present the first spatially resolved polarized scattered light H-band detection of the DoAr 28 transitional disk. Our two epochs of imagery detect the scattered light disk from our effective inner working angle of 0. 10 (13 AU) out to 0. 50 (65 AU). This inner working angle is interior to the location of the systems gap inferred by previous studies using spectral energy distribution modeling (15 AU). We detected a candidate point source companion 1. 08 northwest of the system; however, our second epoch of imagery strongly suggests that this object is a background star. We constructed a grid of Monte Carlo Radiative Transfer models of the system, and our best fit models utilize a modestly inclined (50), 0.01 M disk that has a partially depleted inner gap from the dust sublimation radius out to ∼8 AU. Subtracting this best fit, axi-symmetric model from our polarized intensity data reveals evidence for two small asymmetries in the disk, which could be attributable to a variety of mechanisms

Original languageEnglish (US)
Article number86
JournalAstronomical Journal
Volume150
Issue number3
DOIs
StatePublished - Sep 1 2015

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • protoplanetary disks
  • stars: variables: T Tauri, Herbig Ae/Be

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