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Title: The Shadow Knows: Using Shadows to Investigate the Structure of the Pretransitional Disk of HD 100453

Abstract

We present Gemini Planet Imager polarized intensity imagery of HD 100453 in Y , J , and K 1 bands that reveals an inner gap (9–18 au), an outer disk (18–39 au) with two prominent spiral arms, and two azimuthally localized dark features that are also present in Spectro-Polarimetric High-contrast Exoplanet REsearch (SPHERE) total intensity images. Spectral energy distribution fitting further suggests that the radial gap extends to 1 au. The narrow, wedge-like shape of the dark features appears similar to predictions of shadows cast by an inner disk that is misaligned with respect to the outer disk. Using the Monte Carlo radiative transfer code HOCHUNCK3D, we construct a model of the disk that allows us to determine its physical properties in more detail. From the angular separation of the features, we measure the difference in inclination between the disks (45°) and their major axes, PA = 140° east of north for the outer disk, and 100° for the inner disk. We find an outer-disk inclination of 25° ± 10° from face-on, in broad agreement with the Wagner et al. measurement of 34°. SPHERE data in J and H bands indicate a reddish disk, which indicates that HD 100453 ismore » evolving into a young debris disk.« less

Authors:
; ;  [1];  [2];  [3]; ; ; ;  [4];  [5];  [6];  [7];  [8]; ;  [9];  [10];  [11];  [12];  [13]
  1. Department of Physics, University of Cincinnati, Cincinnati, OH 45221 (United States)
  2. Department of Astronomy/Steward Observatory, The University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States)
  3. Division of Liberal Arts, Kogakuin University, 1-24-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo, 163-8677 (Japan)
  4. National Astronomical Observatory of Japan, 2-21-1, Osawa, Mitaka, Tokyo, 181-8588 (Japan)
  5. Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Stanford, CA 94305 (United States)
  6. Eureka Scientific, 2452 Delmer Street, Suite 100, Oakland CA 96402 (United States)
  7. Division of Particle and Astrophysical Science, Graduate School of Science, Nagoya University, Nagoya (Japan)
  8. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States)
  9. University of Exeter Astrophysics Group, School of Physics, Stocker Road, Exeter, Devon EX4 4QL (United Kingdom)
  10. Department of Astronomical Science, The Graduate University for Advanced Studies (SOKENDAI), Shonan Village, Hayama, Kanagawa 240-0193 (Japan)
  11. Exoplanets and Stellar Astrophysics Laboratory, Code 667, NASA’s Goddard Space Flight Center, Greenbelt, MD 20771 (United States)
  12. Department of Astronomy and RESCUE, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033 (Japan)
  13. Homer L. Dodge Department of Physics, University of Oklahoma, Norman, OK 73071 (United States)
Publication Date:
OSTI Identifier:
22661231
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 838; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; AUGER ELECTRON SPECTROSCOPY; ENERGY SPECTRA; FORECASTING; INCLINATION; INTERACTIONS; MONTE CARLO METHOD; POLARIZATION; PROTOPLANETS; RADIANT HEAT TRANSFER; STARS

Citation Formats

Long, Zachary C., Fernandes, Rachel B., Sitko, Michael, Wagner, Kevin, Muto, Takayuki, Hashimoto, Jun, Oh, Daehyon, Tamura, Motohide, Yang, Yi, Follette, Katherine, Grady, Carol A., Fukagawa, Misato, Hasegawa, Yasuhiro, Kluska, Jacques, Kraus, Stefan, Mayama, Satoshi, McElwain, Michael W., Uyama, Taichi, and Wisniewski, John P.. The Shadow Knows: Using Shadows to Investigate the Structure of the Pretransitional Disk of HD 100453. United States: N. p., 2017. Web. doi:10.3847/1538-4357/AA64DA.
Long, Zachary C., Fernandes, Rachel B., Sitko, Michael, Wagner, Kevin, Muto, Takayuki, Hashimoto, Jun, Oh, Daehyon, Tamura, Motohide, Yang, Yi, Follette, Katherine, Grady, Carol A., Fukagawa, Misato, Hasegawa, Yasuhiro, Kluska, Jacques, Kraus, Stefan, Mayama, Satoshi, McElwain, Michael W., Uyama, Taichi, & Wisniewski, John P.. The Shadow Knows: Using Shadows to Investigate the Structure of the Pretransitional Disk of HD 100453. United States. doi:10.3847/1538-4357/AA64DA.
Long, Zachary C., Fernandes, Rachel B., Sitko, Michael, Wagner, Kevin, Muto, Takayuki, Hashimoto, Jun, Oh, Daehyon, Tamura, Motohide, Yang, Yi, Follette, Katherine, Grady, Carol A., Fukagawa, Misato, Hasegawa, Yasuhiro, Kluska, Jacques, Kraus, Stefan, Mayama, Satoshi, McElwain, Michael W., Uyama, Taichi, and Wisniewski, John P.. Mon . "The Shadow Knows: Using Shadows to Investigate the Structure of the Pretransitional Disk of HD 100453". United States. doi:10.3847/1538-4357/AA64DA.
@article{osti_22661231,
title = {The Shadow Knows: Using Shadows to Investigate the Structure of the Pretransitional Disk of HD 100453},
author = {Long, Zachary C. and Fernandes, Rachel B. and Sitko, Michael and Wagner, Kevin and Muto, Takayuki and Hashimoto, Jun and Oh, Daehyon and Tamura, Motohide and Yang, Yi and Follette, Katherine and Grady, Carol A. and Fukagawa, Misato and Hasegawa, Yasuhiro and Kluska, Jacques and Kraus, Stefan and Mayama, Satoshi and McElwain, Michael W. and Uyama, Taichi and Wisniewski, John P.},
abstractNote = {We present Gemini Planet Imager polarized intensity imagery of HD 100453 in Y , J , and K 1 bands that reveals an inner gap (9–18 au), an outer disk (18–39 au) with two prominent spiral arms, and two azimuthally localized dark features that are also present in Spectro-Polarimetric High-contrast Exoplanet REsearch (SPHERE) total intensity images. Spectral energy distribution fitting further suggests that the radial gap extends to 1 au. The narrow, wedge-like shape of the dark features appears similar to predictions of shadows cast by an inner disk that is misaligned with respect to the outer disk. Using the Monte Carlo radiative transfer code HOCHUNCK3D, we construct a model of the disk that allows us to determine its physical properties in more detail. From the angular separation of the features, we measure the difference in inclination between the disks (45°) and their major axes, PA = 140° east of north for the outer disk, and 100° for the inner disk. We find an outer-disk inclination of 25° ± 10° from face-on, in broad agreement with the Wagner et al. measurement of 34°. SPHERE data in J and H bands indicate a reddish disk, which indicates that HD 100453 is evolving into a young debris disk.},
doi = {10.3847/1538-4357/AA64DA},
journal = {Astrophysical Journal},
number = 1,
volume = 838,
place = {United States},
year = {Mon Mar 20 00:00:00 EDT 2017},
month = {Mon Mar 20 00:00:00 EDT 2017}
}