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Title: Subaru/SCExAO First-light Direct Imaging of a Young Debris Disk around HD 36546

Abstract

We present H -band scattered light imaging of a bright debris disk around the A0 star HD 36546 obtained from the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) system with data recorded by the HiCIAO camera using the vector vortex coronagraph. SCExAO traces the disk from r ∼ 0.″3 to r ∼1″ (34–114 au). The disk is oriented in a near east–west direction (PA ∼ 75°), is inclined by i ∼ 70°–75°, and is strongly forward-scattering (g > 0.5). It is an extended disk rather than a sharp ring; a second, diffuse dust population extends from the disk’s eastern side. While HD 36546 intrinsic properties are consistent with a wide age range (t ∼ 1–250 Myr), its kinematics and analysis of coeval stars suggest a young age (3–10 Myr) and a possible connection to Taurus-Auriga’s star formation history. SCExAO’s planet-to-star contrast ratios are comparable to the first-light Gemini Planet Imager contrasts; for an age of 10 Myr, we rule out planets with masses comparable to HR 8799 b beyond a projected separation of 23 au. A massive icy planetesimal disk or an unseen super-Jovian planet at r > 20 au may explain the disk’s visibility. The HD 36546 debris disk maymore » be the youngest debris disk yet imaged, is the first newly identified object from the now-operational SCExAO extreme AO system, is ideally suited for spectroscopic follow-up with SCExAO/CHARIS in 2017, and may be a key probe of icy planet formation and planet–disk interactions.« less

Authors:
; ; ; ;  [1]; ;  [2];  [3];  [4];  [5]; ;  [6];  [7];  [8]; ;  [9]; ;  [10];  [11];  [12] more »; « less
  1. National Astronomical Observatory of Japan, Subaru Telescope, National Institutes of Natural Sciences, Hilo, HI 96720 (United States)
  2. Astrobiology Center, National Institutes of Natural Sciences, 2-21-1 Osawa, Mitaka, Tokyo (Japan)
  3. IPAC-NExScI, Mail Code 100-22, Caltech, 1200 E. California Boulevard, Pasadena, CA 91125 (United States)
  4. Astrophysics Department, Institute for Advanced Study, Princeton, NJ (United States)
  5. Institute for Astronomy, ETH-Zurich, Wolfgang-Pauli-Str. 27, 8093 Zurich (Switzerland)
  6. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA (United States)
  7. Department of Astronomy, Stockholm University, AlbaNova University Center, SE-106 91 Stockholm (Sweden)
  8. Department of Physics and Astronomy, College of Charleston, 66 George Street, Charleston, SC (United States)
  9. Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ (United States)
  10. Exoplanets and Stellar Astrophysics Laboratory, Code 667, NASA-Goddard Space Flight Center, Greenbelt, MD (United States)
  11. Department of Astronomy, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo (Japan)
  12. Chile Observatory, National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo (Japan)
Publication Date:
OSTI Identifier:
22654544
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 836; 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; COMPARATIVE EVALUATIONS; DUSTS; IMAGES; INTERACTIONS; MASS; OPTICS; PLANETS; RINGS; SCATTERING; STARS; VISIBILITY; VISIBLE RADIATION; VORTICES

Citation Formats

Currie, Thayne, Guyon, Olivier, Kudo, Tomoyuki, Jovanovic, Nemanja, Lozi, Julien, Tamura, Motohide, Kuzuhara, Masayuki, Schlieder, Joshua E., Brandt, Timothy D., Kuhn, Jonas, Serabyn, Eugene, Singh, Garima, Janson, Markus, Carson, Joseph, Groff, Tyler, Kasdin, N. Jeremy, McElwain, Michael W., Grady, Carol, Uyama, Taichi, Akiyama, Eiji, and and others. Subaru/SCExAO First-light Direct Imaging of a Young Debris Disk around HD 36546. United States: N. p., 2017. Web. doi:10.3847/2041-8213/836/1/L15.
Currie, Thayne, Guyon, Olivier, Kudo, Tomoyuki, Jovanovic, Nemanja, Lozi, Julien, Tamura, Motohide, Kuzuhara, Masayuki, Schlieder, Joshua E., Brandt, Timothy D., Kuhn, Jonas, Serabyn, Eugene, Singh, Garima, Janson, Markus, Carson, Joseph, Groff, Tyler, Kasdin, N. Jeremy, McElwain, Michael W., Grady, Carol, Uyama, Taichi, Akiyama, Eiji, & and others. Subaru/SCExAO First-light Direct Imaging of a Young Debris Disk around HD 36546. United States. doi:10.3847/2041-8213/836/1/L15.
Currie, Thayne, Guyon, Olivier, Kudo, Tomoyuki, Jovanovic, Nemanja, Lozi, Julien, Tamura, Motohide, Kuzuhara, Masayuki, Schlieder, Joshua E., Brandt, Timothy D., Kuhn, Jonas, Serabyn, Eugene, Singh, Garima, Janson, Markus, Carson, Joseph, Groff, Tyler, Kasdin, N. Jeremy, McElwain, Michael W., Grady, Carol, Uyama, Taichi, Akiyama, Eiji, and and others. Fri . "Subaru/SCExAO First-light Direct Imaging of a Young Debris Disk around HD 36546". United States. doi:10.3847/2041-8213/836/1/L15.
@article{osti_22654544,
title = {Subaru/SCExAO First-light Direct Imaging of a Young Debris Disk around HD 36546},
author = {Currie, Thayne and Guyon, Olivier and Kudo, Tomoyuki and Jovanovic, Nemanja and Lozi, Julien and Tamura, Motohide and Kuzuhara, Masayuki and Schlieder, Joshua E. and Brandt, Timothy D. and Kuhn, Jonas and Serabyn, Eugene and Singh, Garima and Janson, Markus and Carson, Joseph and Groff, Tyler and Kasdin, N. Jeremy and McElwain, Michael W. and Grady, Carol and Uyama, Taichi and Akiyama, Eiji and and others},
abstractNote = {We present H -band scattered light imaging of a bright debris disk around the A0 star HD 36546 obtained from the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) system with data recorded by the HiCIAO camera using the vector vortex coronagraph. SCExAO traces the disk from r ∼ 0.″3 to r ∼1″ (34–114 au). The disk is oriented in a near east–west direction (PA ∼ 75°), is inclined by i ∼ 70°–75°, and is strongly forward-scattering (g > 0.5). It is an extended disk rather than a sharp ring; a second, diffuse dust population extends from the disk’s eastern side. While HD 36546 intrinsic properties are consistent with a wide age range (t ∼ 1–250 Myr), its kinematics and analysis of coeval stars suggest a young age (3–10 Myr) and a possible connection to Taurus-Auriga’s star formation history. SCExAO’s planet-to-star contrast ratios are comparable to the first-light Gemini Planet Imager contrasts; for an age of 10 Myr, we rule out planets with masses comparable to HR 8799 b beyond a projected separation of 23 au. A massive icy planetesimal disk or an unseen super-Jovian planet at r > 20 au may explain the disk’s visibility. The HD 36546 debris disk may be the youngest debris disk yet imaged, is the first newly identified object from the now-operational SCExAO extreme AO system, is ideally suited for spectroscopic follow-up with SCExAO/CHARIS in 2017, and may be a key probe of icy planet formation and planet–disk interactions.},
doi = {10.3847/2041-8213/836/1/L15},
journal = {Astrophysical Journal Letters},
number = 1,
volume = 836,
place = {United States},
year = {Fri Feb 10 00:00:00 EST 2017},
month = {Fri Feb 10 00:00:00 EST 2017}
}