TY - JOUR
T1 - Direct Imaging of the HD 35841 Debris Disk
T2 - A Polarized Dust Ring from Gemini Planet Imager and an Outer Halo from HST/STIS
AU - Esposito, Thomas M.
AU - Duchne, Gaspard
AU - Kalas, Paul
AU - Rice, Malena
AU - Choquet, Ilodie
AU - Ren, Bin
AU - Perrin, Marshall D.
AU - Chen, Christine H.
AU - Arriaga, Pauline
AU - Chiang, Eugene
AU - Nielsen, Eric L.
AU - Graham, James R.
AU - Wang, Jason J.
AU - Rosa, Robert J.De
AU - Follette, Katherine B.
AU - Ammons, S. Mark
AU - Ansdell, Megan
AU - Bailey, Vanessa P.
AU - Barman, Travis
AU - Bruzzone, Juan Sebastián
AU - Bulger, Joanna
AU - Chilcote, Jeffrey
AU - Cotten, Tara
AU - Doyon, Rene
AU - Fitzgerald, Michael P.
AU - Goodsell, Stephen J.
AU - Greenbaum, Alexandra Z.
AU - Hibon, Pascale
AU - Hung, Li Wei
AU - Ingraham, Patrick
AU - Konopacky, Quinn
AU - Larkin, James E.
AU - Macintosh, Bruce
AU - Maire, Jérôme
AU - Marchis, Franck
AU - Marois, Christian
AU - Mazoyer, Johan
AU - Metchev, Stanimir
AU - Millar-Blanchaer, Maxwell A.
AU - Oppenheimer, Rebecca
AU - Palmer, David
AU - Patience, Jennifer
AU - Poyneer, Lisa
AU - Pueyo, Laurent
AU - Rajan, Abhijith
AU - Rameau, Julien
AU - Rantakyrö, Fredrik T.
AU - Ryan, Dominic
AU - Savransky, Dmitry
AU - Schneider, Adam C.
AU - Sivaramakrishnan, Anand
AU - Song, Inseok
AU - Soummer, Rémi
AU - Thomas, Sandrine
AU - Wallace, J. Kent
AU - Ward-Duong, Kimberly
AU - Wiktorowicz, Sloane
AU - Wolff, Schuyler
N1 - Funding Information:
1Astronomy Department, University of California, Berkeley, CA 94720, USA; tesposito@berkeley.edu 2Université Grenoble Alpes/CNRS, Institut de Planétologie et d’Astrophysique de Grenoble, F-38000 Grenoble, France 3SETI Institute, Carl Sagan Center, 189 Bernardo Ave., Mountain View CA 94043, USA 4Department of Astronomy, Yale University, New Haven, CT 06511, USA 5Department of Astronomy, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, USA 6NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA 7Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA 8Space Telescope Science Institute, Baltimore, MD 21218, USA 9Department of Physics and Astronomy, 430 Portola Plaza, University of California, Los Angeles, CA 90095, USA 10Earth and Planetary Science Department, University of California, Berkeley, CA 94720, USA 11Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Stanford, CA 94305, USA 12Physics and Astronomy Department, Amherst College, 21 Merrill Science Dr., Amherst, MA 01002, USA 13Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94550, USA 14Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA 15Department of Physics and Astronomy, The University of Western Ontario, London, ON, N6A 3K7, Canada 16Subaru Telescope, NAOJ, 650 North A’ohoku Place, Hilo, HI 96720, USA 17Department of Physics, University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, IN, 46556, USA 18Department of Physics and Astronomy, University of Georgia, Athens, GA 30602, USA 19Institut de Recherche sur les Exoplanétes, Département de Physique, Université de Montréal, Montréal QC, H3C 3J7, Canada 20Gemini Observatory, 670 N. A’ohoku Place, Hilo, HI 96720, USA 21Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA 22Gemini Observatory, Casilla 603, La Serena, Chile 23Large Synoptic Survey Telescope, 950N Cherry Ave., Tucson, AZ 85719, USA 24Center for Astrophysics and Space Science, University of California San Diego, La Jolla, CA 92093, USA 25National Research Council of Canada Herzberg, 5071 West Saanich Rd., Victoria, BC, V9E 2E7, Canada 26University of Victoria, 3800 Finnerty Rd., Victoria, BC, V8P 5C2, Canada 27Department of Physics and Astronomy, Centre for Planetary Science and Exploration, The University of Western Ontario, London, ON N6A 3K7, Canada 28Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794-3800, USA 29Department of Astrophysics, American Museum of Natural History, New York, NY 10024, USA 30School of Earth and Space Exploration, Arizona State University, P.O. Box 871404, Tempe, AZ 85287, USA 31Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14853, USA 32Department of Astronomy, UC Santa Cruz, 1156 High St., Santa Cruz, CA 95064, USA 33Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden, The Netherlands
Publisher Copyright:
© 2018. The American Astronomical Society. All rights reserved..
PY - 2018/8
Y1 - 2018/8
N2 - We present new high resolution imaging of a light-scattering dust ring and halo around the young star HD 35841. Using spectroscopic and polarimetric data from the Gemini Planet Imager in H-band (1.6 μm), we detect the highly inclined (i = 85°) ring of debris down to a projected separation of ∼12 au (∼0.″12) for the first time. Optical imaging from HST/STIS shows a smooth dust halo extending outward from the ring to >140 au (>1.″4). We measure the ring's scattering phase function and polarization fraction over scattering angles of 22°-125°, showing a preference for forward scattering and a polarization fraction that peaks at ∼30% near the ansae. Modeling of the scattered-light disk indicates that the ring spans radii of ∼60-220 au, has a vertical thickness similar to that of other resolved dust rings, and contains grains as small as 1.5 μm in diameter. These models also suggest the grains have a low porosity, are more likely to consist of carbon than astrosilicates, and contain significant water ice. The halo has a surface brightness profile consistent with that expected from grains pushed by radiation pressure from the main ring onto highly eccentric but still bound orbits. We also briefly investigate arrangements of a possible inner disk component implied by our spectral energy distribution models, and speculate about the limitations of Mie theory for doing detailed analyses of debris disk dust populations.
AB - We present new high resolution imaging of a light-scattering dust ring and halo around the young star HD 35841. Using spectroscopic and polarimetric data from the Gemini Planet Imager in H-band (1.6 μm), we detect the highly inclined (i = 85°) ring of debris down to a projected separation of ∼12 au (∼0.″12) for the first time. Optical imaging from HST/STIS shows a smooth dust halo extending outward from the ring to >140 au (>1.″4). We measure the ring's scattering phase function and polarization fraction over scattering angles of 22°-125°, showing a preference for forward scattering and a polarization fraction that peaks at ∼30% near the ansae. Modeling of the scattered-light disk indicates that the ring spans radii of ∼60-220 au, has a vertical thickness similar to that of other resolved dust rings, and contains grains as small as 1.5 μm in diameter. These models also suggest the grains have a low porosity, are more likely to consist of carbon than astrosilicates, and contain significant water ice. The halo has a surface brightness profile consistent with that expected from grains pushed by radiation pressure from the main ring onto highly eccentric but still bound orbits. We also briefly investigate arrangements of a possible inner disk component implied by our spectral energy distribution models, and speculate about the limitations of Mie theory for doing detailed analyses of debris disk dust populations.
KW - circumstellar matter
KW - infrared: planetary systems
KW - stars: individual (HD 35841)
KW - techniques: high angular resolution
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U2 - 10.3847/1538-3881/aacbc9
DO - 10.3847/1538-3881/aacbc9
M3 - Article
AN - SCOPUS:85051541997
SN - 0004-6256
VL - 156
JO - Astronomical Journal
JF - Astronomical Journal
IS - 2
M1 - 47
ER -