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near-ir polarized scattered light imagery of the doar 28 transitional diskWe 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 double prime.10 (13 AU) out to 0double prime.50 (65 AU). This inner working angle is interior to the location of the system's gap inferred by previous studies using spectral energy distribution modeling (15 AU). We detected a candidate point source companion 1 double prime.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 degrees), 0.01 solar mass disk that has a partially depleted inner gap from the dust sublimation radius out to approximately 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.
Document ID
Document Type
Reprint (Version printed in journal)
Rich, Evan A.
(Oklahoma Univ. Norman, OK, United States)
Wisiniewski, John P.
(Oklahoma Univ. Norman, OK, United States)
Mayama, Satoshi
(Graduate Univ. for Advanced Studies (SOKENDAI) Tachikawa, Japan)
Brandt, Timothy D.
(Princeton Univ. NJ, United States)
Hashimoto, Jun
(Oklahoma Univ. Norman, OK, United States)
Kudo, Tomoyuki
(Subaru Telescope Hilo, HI, United States)
Kusakabe, Nobuhiko
(Tokyo Astronomical Observatory Mitaka, Japan)
Espaillat, Catherine
(Boston Univ. Boston, MA, United States)
Serabyn, Eugene
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Grady, Carol A.
(Eureka Scientific, Inc. Oakland, CA, United States)
McElwain, Michael W.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
June 15, 2016
Publication Date
August 25, 2015
Publication Information
Publication: The Astronomical Journal
Volume: 150
Issue: 86
Subject Category
Report/Patent Number
Funding Number(s)
Distribution Limits
polarized scattered light H-band
axi-symmetric model
Monte Carlo Radiative Transfer models