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Title: DIRECT IMAGING AND SPECTROSCOPY OF A YOUNG EXTRASOLAR KUIPER BELT IN THE NEAREST OB ASSOCIATION

We describe the discovery of a bright, young Kuiper belt–like debris disk around HD 115600, a ∼1.4–1.5 M{sub ⊙}, ∼15 Myr old member of the Sco–Cen OB Association. Our H-band coronagraphy/integral field spectroscopy from the Gemini Planet Imager shows the ring has a (luminosity-scaled) semimajor axis of (∼22 AU) ∼ 48 AU, similar to the current Kuiper belt. The disk appears to have neutral-scattering dust, is eccentric (e ∼ 0.1–0.2), and could be sculpted by analogs to the outer solar system planets. Spectroscopy of the disk ansae reveal a slightly blue to gray disk color, consistent with major Kuiper belt chemical constituents, where water ice is a very plausible dominant constituent. Besides being the first object discovered with the next generation of extreme adaptive optics systems (i.e., SCExAO, GPI, SPHERE), HD 115600's debris ring and planetary system provide a key reference point for the early evolution of the solar system, the structure, and composition of the Kuiper belt and the interaction between debris disks and planets.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [7] ;  [8]
  1. National Astronomical Observatory of Japan, Subaru Telescope, Hilo, HI (United States)
  2. Applied Physics Laboratory, The Johns Hopkins University, Laurel, MD (United States)
  3. NASA Goddard Space Flight Center, Greenbelt, MD (United States)
  4. Institute for Astronomy, University of Cambridge, Cambridge (United Kingdom)
  5. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  6. ETH-Zurich, Zurich (Switzerland)
  7. Department of Physics and Astronomy, The College of Charleston, Charleston, SC (United States)
  8. Space Telescope Science Institute, Baltimore, MD (United States)
Publication Date:
OSTI Identifier:
22518944
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 807; 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; COLOR; ICE; IMAGES; LUMINOSITY; PLANETS; SCATTERING; SOLAR SYSTEM; SOLAR SYSTEM EVOLUTION; SPECTROSCOPY; STARS; WATER