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Title: Direct imaging of an asymmetric debris disk in the HD 106906 planetary system

Here, we present the first scattered light detections of the HD 106906 debris disk using the Gemini/Gemini Planet Imager in the infrared and Hubble Space Telescope (HST)/Advanced Camera for Surveys in the optical. HD 106906 is a 13 Myr old F5V star in the Sco–Cen association, with a previously detected planet-mass candidate HD 106906b projected 650 AU from the host star. Our observations reveal a near edge-on debris disk that has a central cleared region with radius ~50 AU, and an outer extent >500 AU. The HST data show that the outer regions are highly asymmetric, resembling the "needle" morphology seen for the HD 15115 debris disk. The planet candidate is oriented ~21° away from the position angle of the primary's debris disk, strongly suggesting non-coplanarity with the system. We hypothesize that HD 106906b could be dynamically involved in the perturbation of the primary's disk, and investigate whether or not there is evidence for a circumplanetary dust disk or cloud that is either primordial or captured from the primary. In conclusion, we show that both the existing optical properties and near-infrared colors of HD 106906b are weakly consistent with this possibility, motivating future work to test for the observational signaturesmore » of dust surrounding the planet.« less
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [5] ;  [6] ;  [1] ;  [1] ;  [2] ;  [7] ;  [8] ;  [9] ;  [10] ;  [9] ;  [3] ;  [1] ;  [10] ;  [9] ;  [9] more »;  [11] ;  [6] ;  [12] ;  [13] ;  [7] ;  [14] ;  [15] ;  [14] ;  [16] ;  [6] ;  [17] ;  [18] ;  [10] ;  [6] ;  [5] ;  [3] ;  [19] ;  [20] ;  [21] ;  [22] ;  [23] ;  [5] ;  [5] ;  [14] ;  [7] ;  [9] ;  [24] ;  [25] ;  [5] ;  [5] ;  [13] ;  [17] ;  [26] ;  [2] ;  [27] ;  [28] « less
  1. Univ. of California, Berkeley, CA (United States)
  2. Arizona State Univ., Tempe, AZ (United States)
  3. Univ. of Toronto, Toronto, ON (Canada)
  4. Univ. of California, Berkeley, CA (United States); Univ. of Grenoble Alpes, Grenoble (France); CNRS, IPAG, Grenoble (France)
  5. Space Telescope Science Institute, Baltimore, MD (United States)
  6. Univ. of California, Los Angeles, CA (United States)
  7. Stanford Univ., Stanford, CA (United States)
  8. Univ. of California, Santa Barbara, CA (United States)
  9. National Research Council of Canada Herzberg, Victoria, BC (Canada)
  10. Univ. de Montreal, Montreal, QC (Canada)
  11. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  12. National Astronomical Observatory of Japan, Hilo, HI (United States)
  13. The Univ. of Georgia, Athens, GA (United States)
  14. Gemini Observatory, La Serena (Chile)
  15. Johns Hopkins Univ., Baltimore, MD (United States)
  16. Univ. of Exeter, Exeter (United Kingdom)
  17. AURA/LSST, Tucson, AZ (United States)
  18. Univ. of California, San Diego, La Jolla, CA (United States)
  19. SETI Institute, Mountain View, CA (United States)
  20. Univ. of Western Ontario, London, ON (Canada); Stony Brook Univ., Stony Brook, NY (United States)
  21. Univ. of Arizona, Tucson, AZ (United States)
  22. Stanford Univ., Stanford, CA (United States); SETI Institute, Mountain View, CA (United States)
  23. American Museum of Natural History, New York, NY (United States)
  24. Cornell Univ., Ithaca, NY (United States)
  25. Univ. of Toledo, Toledo, OH (United States)
  26. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  27. Univ. of California, Santa Cruz, CA (United States)
  28. Space Telescope Science Institute, Baltimore, MD (United States); Johns Hopkins Univ., Baltimore, MD (United States)
Publication Date:
OSTI Identifier:
1324518
Report Number(s):
LLNL-JRNL--678586
Journal ID: ISSN 1538-4357
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 814; Journal Issue: 1; Journal ID: ISSN 1538-4357
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 106906); techniques: high angular resolution