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

Abstract

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 H α . 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 diskmore » 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.« less

Authors:
; ; ;  [1];  [2]; ; ; ;  [3]; ;  [4]; ; ;  [5]; ;  [6];  [7];  [8];  [9];  [10] more »; « less
  1. Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics, Stanford University, Stanford, CA, 94305 (United States)
  2. Institut de Recherche sur les Exoplanètes, Départment de Physique, Université de Montréal, Montréal QC H3C 3J7 (Canada)
  3. Steward Observatory, University of Arizona, Tucson, AZ 85721 (United States)
  4. Space Telescope Science Institute, Baltimore, MD 21218 (United States)
  5. Astronomy Department, University of California, Berkeley, Berkeley CA 94720 (United States)
  6. Physics and Astronomy Department, Amherst College, 21 Merrill Science Drive, Amherst, MA 01002 (United States)
  7. National Research Council of Canada Herzberg, 5071 West Saanich Road, Victoria, BC V9E 2E7 (Canada)
  8. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91125 (United States)
  9. Lawrence Livermore National Laboratory, Livermore, CA 94551 (United States)
  10. Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721 (United States)
Publication Date:
OSTI Identifier:
22663590
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astronomical Journal (Online); Journal Volume: 153; Journal Issue: 6; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ALGORITHMS; COMPARATIVE EVALUATIONS; EMISSION; EXPLORATION; IMAGES; OPTICS; PLANETS; PROTOPLANETS; ROTATION; SENSITIVITY; STARS; WAVELENGTHS

Citation Formats

Follette, Katherine B., Macintosh, Bruce, Mullen, Wyatt, Bailey, Vanessa P., Rameau, Julien, Dong, Ruobing, Close, Laird M., Males, Jared R., Morzinski, Katie M., Pueyo, Laurent, Perrin, Marshall, Duchêne, Gaspard, Fung, Jeffrey, Wang, Jason, Leonard, Clare, Spiro, Elijah, Marois, Christian, Millar-Blanchaer, Maxwell A., Ammons, S. Mark, Barman, Travis, and and others. Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO. United States: N. p., 2017. Web. doi:10.3847/1538-3881/AA6D85.
Follette, Katherine B., Macintosh, Bruce, Mullen, Wyatt, Bailey, Vanessa P., Rameau, Julien, Dong, Ruobing, Close, Laird M., Males, Jared R., Morzinski, Katie M., Pueyo, Laurent, Perrin, Marshall, Duchêne, Gaspard, Fung, Jeffrey, Wang, Jason, Leonard, Clare, Spiro, Elijah, Marois, Christian, Millar-Blanchaer, Maxwell A., Ammons, S. Mark, Barman, Travis, & and others. Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO. United States. doi:10.3847/1538-3881/AA6D85.
Follette, Katherine B., Macintosh, Bruce, Mullen, Wyatt, Bailey, Vanessa P., Rameau, Julien, Dong, Ruobing, Close, Laird M., Males, Jared R., Morzinski, Katie M., Pueyo, Laurent, Perrin, Marshall, Duchêne, Gaspard, Fung, Jeffrey, Wang, Jason, Leonard, Clare, Spiro, Elijah, Marois, Christian, Millar-Blanchaer, Maxwell A., Ammons, S. Mark, Barman, Travis, and and others. Thu . "Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO". United States. doi:10.3847/1538-3881/AA6D85.
@article{osti_22663590,
title = {Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO},
author = {Follette, Katherine B. and Macintosh, Bruce and Mullen, Wyatt and Bailey, Vanessa P. and Rameau, Julien and Dong, Ruobing and Close, Laird M. and Males, Jared R. and Morzinski, Katie M. and Pueyo, Laurent and Perrin, Marshall and Duchêne, Gaspard and Fung, Jeffrey and Wang, Jason and Leonard, Clare and Spiro, Elijah and Marois, Christian and Millar-Blanchaer, Maxwell A. and Ammons, S. Mark and Barman, Travis and and others},
abstractNote = {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 H α . 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.},
doi = {10.3847/1538-3881/AA6D85},
journal = {Astronomical Journal (Online)},
number = 6,
volume = 153,
place = {United States},
year = {Thu Jun 01 00:00:00 EDT 2017},
month = {Thu Jun 01 00:00:00 EDT 2017}
}