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Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO

Follette, Katherine B.; Rameau, Julien; Dong, Ruobing; Pueyo, Laurent; Close, Laird M.; Duchêne, Gaspard; Fung, Jeffrey; Leonard, Clare; Macintosh, Bruce; Males, Jared R.; Marois, Christian; Millar-Blanchaer, Maxwell A.; Morzinski, Katie M.; Mullen, Wyatt; Perrin, Marshall; Spiro, Elijah; Wang, Jason; Ammons, S. Mark; Bailey, Vanessa P.; Barman, Travis; Bulger, Joanna; Chilcote, Jeffrey; Cotten, Tara; De Rosa, Robert J.; Doyon, Rene; Fitzgerald, Michael P.; Goodsell, Stephen J.; Graham, James R.; Greenbaum, Alexandra Z.; Hibon, Pascale; Hung, Li-Wei; Ingraham, Patrick; Kalas, Paul; Konopacky, Quinn; Larkin, James E.; Maire, Jérôme; Marchis, Franck; Metchev, Stanimir; Nielsen, Eric L.; Oppenheimer, Rebecca; Palmer, David; Patience, Jennifer; Poyneer, Lisa; Rajan, Abhijith; Rantakyrö, Fredrik T.; Savransky, Dmitry; Schneider, Adam C.; Sivaramakrishnan, Anand; Song, Inseok; Soummer, Remi; Thomas, Sandrine; Vega, David; Wallace, J. Kent; Ward-Duong, Kimberly; Wiktorowicz, Sloane; Wolff, Sc...

Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO Thumbnail


Katherine B. Follette

Julien Rameau

Ruobing Dong

Laurent Pueyo

Laird M. Close

Gaspard Duchêne

Jeffrey Fung

Clare Leonard

Bruce Macintosh

Jared R. Males

Christian Marois

Maxwell A. Millar-Blanchaer

Katie M. Morzinski

Wyatt Mullen

Marshall Perrin

Elijah Spiro

Jason Wang

S. Mark Ammons

Vanessa P. Bailey

Travis Barman

Joanna Bulger

Jeffrey Chilcote

Tara Cotten

Robert J. De Rosa

Rene Doyon

Michael P. Fitzgerald

James R. Graham

Alexandra Z. Greenbaum

Pascale Hibon

Li-Wei Hung

Patrick Ingraham

Paul Kalas

Quinn Konopacky

James E. Larkin

Jérôme Maire

Franck Marchis

Stanimir Metchev

Eric L. Nielsen

Rebecca Oppenheimer

David Palmer

Jennifer Patience

Lisa Poyneer

Abhijith Rajan

Fredrik T. Rantakyrö

Dmitry Savransky

Adam C. Schneider

Anand Sivaramakrishnan

Inseok Song

Remi Soummer

Sandrine Thomas

David Vega

J. Kent Wallace

Kimberly Ward-Duong

Sloane Wiktorowicz

Schuyler Wolff


We present optical and near-infrared high-contrast images of the transitional disk HD 100546 taken with the Magellan Adaptive Optics system (MagAO) and the Gemini Planet Imager (GPI). GPI data include both polarized intensity and total intensity imagery, and MagAO data are taken in Simultaneous Differential Imaging mode at Hα. The new GPI H-band total intensity data represent a significant enhancement in sensitivity and field rotation compared to previous data sets and enable a detailed exploration of substructure in the disk. The data are processed with a variety of differential imaging techniques (polarized, angular, reference, and simultaneous differential imaging) in an attempt to identify the disk structures that are most consistent across wavelengths, processing techniques, and algorithmic parameters. The inner disk cavity at 15 au is clearly resolved in multiple data sets, as are a variety of spiral features. While the cavity and spiral structures are identified at levels significantly distinct from the neighboring regions of the disk under several algorithms and with a range of algorithmic parameters, emission at the location of HD 100546 "c" varies from point-like under aggressive algorithmic parameters to a smooth continuous structure with conservative parameters, and is consistent with disk emission. Features identified in the HD 100546 disk bear qualitative similarity to computational models of a moderately inclined two-armed spiral disk, where projection effects and wrapping of the spiral arms around the star result in a number of truncated spiral features in forward-modeled images.


Follette, K. B., Rameau, J., Dong, R., Pueyo, L., Close, L. M., Duchêne, G., …Wolff, S. (2017). Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO. Astronomical Journal, 153(6), Article 264.

Journal Article Type Article
Acceptance Date Apr 13, 2017
Online Publication Date May 22, 2017
Publication Date May 22, 2017
Deposit Date Jul 6, 2017
Publicly Available Date Jul 6, 2017
Journal Astronomical Journal
Print ISSN 0004-6256
Electronic ISSN 1538-3881
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 153
Issue 6
Article Number 264


Published Journal Article (2.7 Mb)

Copyright Statement
© 2017. The American Astronomical Society. All rights reserved.

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