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The PDS 66 Circumstellar Disk as Seen in Polarized Light with the Gemini Planet Imager

Wolff, Schuyler G.; Perrin, Marshall; Millar-Blanchaer, Maxwell A.; Nielsen, Eric L.; Wang, Jason; Cardwell, Andrew; Chilcote, Jeffrey; Dong, Ruobing; Draper, Zachary H.; Duchêne, Gaspard; Fitzgerald, Michael P.; Goodsell, Stephen J.; Grady, Carol A.; Graham, James R.; Greenbaum, Alexandra Z.; Hartung, Markus; Hibon, Pascale; Hines, Dean C.; Hung, Li-Wei; Kalas, Paul; Macintosh, Bruce; Marchis, Franck; Marois, Christian; Pueyo, Laurent; Rantakyrö, Fredrik T.; Schneider, Glenn; Sivaramakrishnan, Anand; Wiktorowicz, Sloane J.

The PDS 66 Circumstellar Disk as Seen in Polarized Light with the Gemini Planet Imager Thumbnail


Schuyler G. Wolff

Marshall Perrin

Maxwell A. Millar-Blanchaer

Eric L. Nielsen

Jason Wang

Andrew Cardwell

Jeffrey Chilcote

Ruobing Dong

Zachary H. Draper

Gaspard Duchêne

Michael P. Fitzgerald

Carol A. Grady

James R. Graham

Alexandra Z. Greenbaum

Markus Hartung

Pascale Hibon

Dean C. Hines

Li-Wei Hung

Paul Kalas

Bruce Macintosh

Franck Marchis

Christian Marois

Laurent Pueyo

Fredrik T. Rantakyrö

Glenn Schneider

Anand Sivaramakrishnan

Sloane J. Wiktorowicz


We present H- and K-band imaging polarimetry for the PDS 66 circumstellar disk obtained during the commissioning of the Gemini Planet Imager (GPI). Polarization images reveal a clear detection of the disk in to the 0farcs12 inner working angle (IWA) in the H band, almost three times closer to the star than the previous Hubble Space Telescope (HST) observations with NICMOS and STIS (0farcs35 effective IWA). The centro-symmetric polarization vectors confirm that the bright inner disk detection is due to circumstellar scattered light. A more diffuse disk extends to a bright outer ring centered at 80 AU. We discuss several physical mechanisms capable of producing the observed ring + gap structure. GPI data confirm enhanced scattering on the east side of the disk that is inferred to be nearer to us. We also detect a lateral asymmetry in the south possibly due to shadowing from material within the IWA. This likely corresponds to a temporally variable azimuthal asymmetry observed in HST/STIS coronagraphic imaging.


Wolff, S. G., Perrin, M., Millar-Blanchaer, M. A., Nielsen, E. L., Wang, J., Cardwell, A., …Wiktorowicz, S. J. (2016). The PDS 66 Circumstellar Disk as Seen in Polarized Light with the Gemini Planet Imager. Astrophysical Journal Letters, 818(1), Article L15.

Journal Article Type Article
Acceptance Date Jan 19, 2016
Online Publication Date Feb 8, 2016
Publication Date Feb 8, 2016
Deposit Date Dec 6, 2016
Publicly Available Date Jan 26, 2017
Journal Astrophysical Journal Letters
Print ISSN 2041-8205
Electronic ISSN 2041-8213
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 818
Issue 1
Article Number L15


Published Journal Article (2.2 Mb)

Copyright Statement
© 2016. The American Astronomical Society. All rights reserved.

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