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    IMAGING AN 80 au RADIUS DUST RING AROUND THE F5V STAR HD 157587

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    Millar-Blanchaer_2016_AJ_152_1 ...
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    Author
    Millar-Blanchaer, Maxwell A. cc
    Wang, Jason J. cc
    Kalas, Paul
    Graham, James R.
    Duchêne, Gaspard
    Nielsen, Eric L. cc
    Perrin, Marshall cc
    Moon, Dae-Sik cc
    Padgett, Deborah cc
    Metchev, Stanimir A. cc
    Ammons, S. Mark cc
    Bailey, Vanessa P.
    Barman, Travis S. cc
    Bruzzone, Sebastian
    Bulger, Joanna
    Chen, Christine H. cc
    Chilcote, Jeffrey
    Cotten, Tara cc
    Rosa, Robert J. De
    Doyon, Rene
    Draper, Zachary H. cc
    Esposito, Thomas M. cc
    Fitzgerald, Michael P. cc
    Follette, Katherine B. cc
    Gerard, Benjamin L. cc
    Greenbaum, Alexandra Z. cc
    Hibon, Pascale cc
    Hinkley, Sasha cc
    Hung, Li-Wei
    Ingraham, Patrick
    Johnson-Groh, Mara cc
    Konopacky, Quinn
    Larkin, James E. cc
    Macintosh, Bruce cc
    Maire, Jérôme
    Marchis, Franck cc
    Marley, Mark S. cc
    Marois, Christian cc
    Matthews, Brenda C. cc
    Oppenheimer, Rebecca cc
    Palmer, David
    Patience, Jennifer
    Poyneer, Lisa
    Pueyo, Laurent
    Rajan, Abhijith cc
    Rameau, Julien cc
    Rantakyrö, Fredrik T. cc
    Savransky, Dmitry cc
    Schneider, Adam C. cc
    Sivaramakrishnan, Anand cc
    Song, Inseok cc
    Soummer, Remi cc
    Thomas, Sandrine
    Vega, David
    Wallace, J. Kent cc
    Ward-Duong, Kimberly
    Wiktorowicz, Sloane cc
    Wolff, Schuyler cc
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    Affiliation
    Univ Arizona, Lunar & Planetary Lab
    Issue Date
    2016-10-20
    Keywords
    planet-disk interactions
    stars: individual (HD 157587)
    techniques: polarimetric
    
    Metadata
    Show full item record
    Publisher
    IOP PUBLISHING LTD
    Citation
    IMAGING AN 80 au RADIUS DUST RING AROUND THE F5V STAR HD 157587 2016, 152 (5):128 The Astronomical Journal
    Journal
    The Astronomical Journal
    Rights
    © 2016. The American Astronomical Society. All rights reserved.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    We present H-band near-infrared polarimetric imaging observations of the F5V star HD 157587 obtained with the Gemini Planet Imager (GPI) that reveal the debris disk as a bright ring structure at a separation of similar to 80-100 au. The new GPI data complement recent Hubble Space Telescope/STIS observations that show the disk extending out to over 500 au. The GPI image displays a strong asymmetry along the projected minor axis as well as a fainter asymmetry along the projected major axis. We associate the minor and major axis asymmetries with polarized forward scattering and a possible stellocentric offset, respectively. To constrain the disk geometry, we fit two separate disk models to the polarized image, each using a different scattering phase function. Both models favor a disk inclination of similar to 70 degrees and a 1.5 +/- 0.6 au stellar offset in the plane of the sky along the projected major axis of the disk. We find that the stellar offset in the disk plane, perpendicular to the projected major axis is degenerate with the form of the scattering phase function and remains poorly constrained. The disk is not recovered in total intensity due in part to strong adaptive optics residuals, but we recover three point sources. Considering the system's proximity to the galactic plane and the point sources' positions relative to the disk, we consider it likely that they are background objects and unrelated to the disk's offset from the star.
    ISSN
    1538-3881
    DOI
    10.3847/0004-6256/152/5/128
    Version
    Final published version
    Sponsors
    NASA's NEXSS program [NNX15AD95G]; U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; NSF [AST-1413718, AST-1518332]; NASA [NNX15AC89G]; Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]
    Additional Links
    http://stacks.iop.org/1538-3881/152/i=5/a=128?key=crossref.de019cbc0cb15346f58c754c7c6d227a
    ae974a485f413a2113503eed53cd6c53
    10.3847/0004-6256/152/5/128
    Scopus Count
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    UA Faculty Publications

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