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Title: The peculiar debris disk of HD 111520 as resolved by the Gemini Planet Imager

Journal Article · · The Astrophysical Journal (Online)
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [1]; ORCiD logo [4];  [4];  [4];  [5]; ORCiD logo [6];  [7]; ORCiD logo [8];  [3];  [9]; ORCiD logo [10];  [11]; ORCiD logo [1]; ORCiD logo [12];  [13];  [14]; ORCiD logo [11] more »;  [15];  [9]; ORCiD logo [16]; ORCiD logo [1];  [17]; ORCiD logo [18];  [19];  [20]; ORCiD logo [8];  [8];  [20];  [9];  [8];  [16]; ORCiD logo [20]; ORCiD logo [12] « less
  1. Univ. of Victoria, Victoria, BC (Canada); National Research Council of Canada, Victoria, BC (Canada)
  2. Univ. of California, Berkeley, CA (United States); Univ. Grenoble Alpes/CNRS, Grenoble (France)
  3. Univ. of Toronto, Toronto, ON (Canada)
  4. Univ. of California, Berkeley, CA (United States)
  5. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  6. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  7. Subaru Telescope, Hilo, HI (United States)
  8. Space Telescope Science Institute, Baltimore, MD (United States)
  9. Univ. de Montreal, Montreal, QC (Canada)
  10. Univ. of California, Los Angeles, CA (United States)
  11. Stanford Univ., Stanford, CA (United States)
  12. Space Telescope Science Institute, Baltimore, MD (United States); Johns Hopkins Univ., Baltimore, MD (United States)
  13. European Southern Observatory, Santiago (Chile)
  14. Univ. of Exeter, Exeter (United Kingdom)
  15. Large Synoptic Survey Telescope, Tucson, AZ (United States)
  16. SETI Institute, Mountain View, CA (United States)
  17. Stanford Univ., Stanford, CA (United States); SETI Institute, Mountain View, CA (United States)
  18. American Museum of Natural History, New York, NY (United States)
  19. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  20. Arizona State Univ., Tempe, AZ (United States)

Using the Gemini Planet Imager, we have resolved the circumstellar debris disk around HD 111520 at a projected range of ~30–100 AU in both total and polarized H-band intensity. The disk is seen edge-on at a position angle of 165° along the spine of emission. A slight inclination and asymmetric warp are covariant and alter the interpretation of the observed disk emission. We employ three point-spread function subtraction methods to reduce the stellar glare and instrumental artifacts to confirm that there is a roughly 2:1 brightness asymmetry between the NW and SE extension. This specific feature makes HD 111520 the most extreme example of asymmetric debris disks observed in scattered light among similar highly inclined systems, such as HD 15115 and HD 106906. We further identify a tentative localized brightness enhancement and scale height enhancement associated with the disk at ~40 AU away from the star on the SE extension. We also find that the fractional polarization rises from 10% to 40% from 0".5 to 0".8 from the star. Lastly, the combination of large brightness asymmetry and symmetric polarization fraction leads us to believe that an azimuthal dust density variation is causing the observed asymmetry.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE; Natural Science and Engineering Research Council of Canada; National Science Foundation (NSF)
Grant/Contract Number:
AC52-07NA27344; AST-0909188; AST-1313718; AST-141378; AST-1411868; NNX15AD95G/NEXSS; NNX14AJ80G; NNX11AD21G
OSTI ID:
1352120
Report Number(s):
LLNL-JRNL-717838
Journal Information:
The Astrophysical Journal (Online), Vol. 826, Issue 2; ISSN 1538-4357
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

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The Signature of Primordial Grain Growth in the Polarized Light of the AU Mic Debris Disk text January 2006

Cited By (13)

The First Scattered-light Image of the Debris Disk around the Sco–Cen Target HD 129590 journal June 2017
First Resolved Scattered-light Images of Four Debris Disks in Scorpius-Centaurus with the Gemini Planet Imager journal January 2020
An Optical/Near-infrared Investigation of HD 100546 b with the Gemini Planet Imager and MagAO journal May 2017
Direct Imaging of the HD 35841 Debris Disk: A Polarized Dust Ring from Gemini Planet Imager and an Outer Halo from HST /STIS journal July 2018
Constraining the presence of giant planets in two-belt debris disc systems with VLT/SPHERE direct imaging and dynamical arguments journal July 2018
An Exo–Kuiper Belt with an Extended Halo around HD 191089 in Scattered Light journal September 2019
SCExAO/CHARIS Near-IR High-contrast Imaging and Integral Field Spectroscopy of the HIP 79977 Debris Disk journal November 2018
GPI observational calibrations XIV: polarimetric contrasts and new data reduction techniques conference August 2016
VLT/SPHERE Multiwavelength High-contrast Imaging of the HD 115600 Debris Disk: New Constraints on the Dust Geometry and the Presence of Young Giant Planets journal January 2019
An Optical/near-infrared investigation of HD 100546 b with the Gemini Planet Imager and MagAO text January 2017
Constraining the presence of giant planets in two-belt debris disk systems with VLT/SPHERE direct imaging and dynamical arguments text January 2018
VLT/SPHERE Multi-Wavelength High-Contrast Imaging of the HD 115600 Debris Disk: New Constraints on the Dust Geometry and the Presence of Young Giant Planets text January 2018
An Exo-Kuiper Belt and An Extended Halo around HD 191089 in Scattered Light text January 2019

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