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Title: FIRST SCATTERED-LIGHT IMAGE OF THE DEBRIS DISK AROUND HD 131835 WITH THE GEMINI PLANET IMAGER

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] ; ;  [3] ;  [4] ;  [5] ;  [6] ;  [7] ; ; ;  [8] ;  [9] ;  [10] ;  [11] more »; « less
  1. Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 (United States)
  2. Astronomy Department, University of California, Berkeley CA 94720-3411 (United States)
  3. Dunlap Institute for Astronomy and Astrophysics, University of Toronto, 50 St. George Street, Toronto, ON M5S 3H4 (Canada)
  4. National Research Council of Canada Herzberg, 5071 West Saanich Road, Victoria, BC V9E 2E7 (Canada)
  5. Department of Astronomy and Astrophysics, University of Toronto, Toronto ON M5S 3H4 (Canada)
  6. Department of Physics and Astronomy, Centre for Planetary and Space Exploration, University of Western Ontario, London, ON N6A 3K7 (Canada)
  7. School of Earth and Space Exploration, Arizona State University, P.O. Box 871404, Tempe, AZ 85287 (United States)
  8. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States)
  9. Center for Astrophysics and Space Sciences, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093 (United States)
  10. Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94040 (United States)
  11. University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2 (Canada)
Publication Date:
OSTI Identifier:
22518659
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 815; 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; ASYMMETRY; BRIGHTNESS; CARBON; COMPARATIVE EVALUATIONS; IMAGES; MONTE CARLO METHOD; PLANETS; POINT SOURCES; RADIANT HEAT TRANSFER; SILICATES; STARS; VISIBLE RADIATION