First scattered-light image of the debris disk around HD 131835 with the gemini planet imager

Li Wei Hung, Gaspard Duchêne, Pauline Arriaga, Michael P. Fitzgerald, Jérôme Maire, Christian Marois, Maxwell A. Millar-Blanchaer, Sebastian Bruzzone, Abhijith Rajan, Laurent Pueyo, Paul G. Kalas, Robert J. De Rosa, James R. Graham, Quinn Konopacky, Schuyler G. Wolff, S. Mark Ammons, Christine H. Chen, Jeffrey K. Chilcote, Zachary H. Draper, Thomas M. EspositoBenjamin Gerard, Stephen Goodsell, Alexandra Greenbaum, Pascale Hibon, Sasha Hinkley, Bruce MacIntosh, Franck Marchis, Stanimir Metchev, Eric L. Nielsen, Rebecca Oppenheimer, Jennifer Patience, Marshall D. Perrin, Fredrik T. Rantakyrö, Anand Sivaramakrishnan, Jason J. Wang, Kimberly Ward-Duong, Sloane J. Wiktorowicz

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

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.

Original languageEnglish (US)
Article numberL14
JournalAstrophysical Journal Letters
Volume815
Issue number1
DOIs
StatePublished - Dec 10 2015

Keywords

  • circumstellar matter
  • infrared: stars
  • stars: individual (HD 131835)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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