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Title: First scattered-light image of the debris disk around HD 131835 with the Gemini Planet Imager

Here, we present the first scattered-light image of the debris disk around HD 131835 in the H band using the Gemini Planet Imager. HD 131835 is a ~15 Myr old A2IV star at a distance of ~120 pc in the Sco-Cen OB association. We detect the disk only in polarized light and place an upper limit on the peak total intensity. No point sources resembling exoplanets were identified. Compared to its mid-infrared thermal emission, in scattered light the disk shows similar orientation but different morphology. The scattered-light disk extends from ~75 to ~210 AU in the disk plane with roughly flat surface density. Our Monte Carlo radiative transfer model can describe the observations with a model disk composed of a mixture of silicates and amorphous carbon. In addition to the obvious brightness asymmetry due to stronger forward scattering, we discover a weak brightness asymmetry along the major axis, with the northeast side being 1.3 times brighter than the southwest side at a 3σ level.
Authors:
 [1] ;  [2] ;  [1] ;  [1] ;  [3] ;  [4] ;  [3] ;  [5] ;  [6] ;  [7] ;  [8] ;  [8] ;  [8] ;  [9] ;  [10] ;  [11] ;  [7] ;  [3] ;  [12] ;  [13] more »;  [4] ;  [14] ;  [10] ;  [15] ;  [16] ;  [17] ;  [18] ;  [19] ;  [20] ;  [21] ;  [6] ;  [7] ;  [15] ;  [7] ;  [8] ;  [6] ;  [22] « less
  1. Univ. of California, Los Angeles, CA (United States)
  2. Univ. of California, Berkeley, CA (United States); Univ. Grenoble Alpes, Grenoble (France); CNRS, Grenoble (France)
  3. Univ. of Toronto, Toronto, ON (Canada)
  4. National Research Council of Canada Herzberg, Victoria, BC (Canada); Univ. of Victoria, Victoria, BC (Canada)
  5. Univ. of Western Ontario, London, ON (Canada)
  6. Arizona State Univ., Tempe, AZ (United States)
  7. Space Telescope Science Institute, Baltimore, MD (United States)
  8. Univ. of California, Berkeley, CA (United States)
  9. Univ. of Californa, San Diego, La Jolla, CA (United States)
  10. Space Telescope Science Institute, Baltimore, MD (United States); Johns Hopkins Univ., Baltimore, MD (United States)
  11. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  12. Univ. of Victoria, Victoria, BC (Canada)
  13. Univ. of California, Los Angeles, CA (United States); Univ. of California, Berkeley, CA (United States)
  14. Gemini Observatory, La Serena (Chile); Durham Univ., Durham (United Kingdom)
  15. Gemini Observatory, La Serena (Chile)
  16. Univ. of Exeter, Exeter (United Kingdom)
  17. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Stanford Univ., Stanford, CA (United States)
  18. SETI Institute, Mountain View, CA (United States)
  19. Univ. of Western Ontario, London, ON (Canada); Stony Brook Univ., Stony Brook, NY (United States)
  20. Stanford Univ., Stanford, CA (United States); SETI Institute, Mountain View, CA (United States)
  21. American Museum of Natural History, New York, NY (United States)
  22. Univ. of California, Santa Cruz, CA (United States)
Publication Date:
OSTI Identifier:
1324520
Report Number(s):
LLNL-JRNL--678635
Journal ID: ISSN 2041-8213
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal. Letters
Additional Journal Information:
Journal Volume: 815; Journal Issue: 1; Journal ID: ISSN 2041-8213
Publisher:
Institute of Physics (IOP)
Research Org:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS circumstellar matter; infrared: stars; stars: individual (HD 131835)