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    SCExAO AND GPI Y JH BAND PHOTOMETRY AND INTEGRAL FIELD SPECTROSCOPY OF THE YOUNG BROWN DWARF COMPANION TO HD 1160

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    Garcia_2017_ApJ_834_162.pdf
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    Author
    Garcia, E. Victor
    Currie, T. cc
    Guyon, Olivier
    Stassun, Keivan G. cc
    Jovanovic, Nemanja
    Lozi, Julien
    Kudo, Tomoyuki cc
    Doughty, Danielle
    Schlieder, Joshua E. cc
    Kwon, J. cc
    Uyama, Taichi cc
    Kuzuhara, M.
    Carson, J. C.
    Nakagawa, T.
    Hashimoto, J.
    Kusakabe, N.
    Abe, L.
    Brandner, W.
    Brandt, T. D. cc
    Feldt, M.
    Goto, M.
    Grady, C. A.
    Hayano, Y. cc
    Hayashi, M.
    Hayashi, S. S.
    Henning, T.
    Hodapp, K. W. cc
    Ishii, M.
    Iye, M.
    Janson, M. cc
    Kandori, R.
    Knapp, G. R. cc
    Matsuo, T.
    McElwain, M. W.
    Miyama, S.
    Morino, J.-I.
    Moro-Martin, A. cc
    Nishimura, T.
    Pyo, T.-S. cc
    Serabyn, E.
    Suenaga, T.
    Suto, H.
    Suzuki, R.
    Takahashi, Y. H.
    Takami, H.
    Takami, M. cc
    Takato, N.
    Terada, H. cc
    Thalmann, C. cc
    Turner, E. L.
    Watanabe, M. cc
    Wisniewski, J. cc
    Yamada, T.
    Usuda, T. cc
    Tamura, M.
    Show allShow less
    Affiliation
    Univ Arizona, Steward Observ
    Univ Arizona, Coll Opt Sci
    Issue Date
    2017-01-10
    Keywords
    instrumentation: adaptive optics
    planetary systems
    stars: low-mass
    techniques: imaging spectroscopy
    
    Metadata
    Show full item record
    Publisher
    IOP PUBLISHING LTD
    Citation
    SCExAO AND GPI Y JH BAND PHOTOMETRY AND INTEGRAL FIELD SPECTROSCOPY OF THE YOUNG BROWN DWARF COMPANION TO HD 1160 2017, 834 (2):162 The Astrophysical Journal
    Journal
    The Astrophysical Journal
    Rights
    © 2017. 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 high signal-to-noise ratio, precise Y JH photometry and Y band (0.957-1.120 mu m) spectroscopy of HD 1160 B, a young substellar companion discovered from the Gemini NICI Planet Finding Campaign using the Subaru Coronagraphic Extreme Adaptive Optics instrument and the Gemini Planet Imager. HD 1160 B has typical mid-M dwarf-like infrared colors and a spectral type of M5.5(-0.5)(+1.0), where the blue edge of our Y band spectrum rules out earlier spectral types. Atmospheric modeling suggests HD 1160 B has an effective temperature of 3000-3100 K, a surface gravity of log g - 4-4.5, a radius of. 1.55 +/- 0.10 R-J, and a luminosity of log L/L circle dot - 2.76 +/- 0.05. Neither the primary's Hertzspring-Russell diagram position nor atmospheric modeling of HD 1160 B show evidence for a subsolar metallicity. Interpretation of the HD 1160 B spectroscopy depends on which stellar system components are used to estimate the age. Considering HD 1160 A, B and C jointly, we derive an age of 80-125 Myr, implying that HD 1160 B straddles the hydrogen-burning limit (70-90 M-J) If we consider HD 1160 A alone, younger ages (20-125 Myr) and a brown dwarf-like mass (35-90 M-J) are possible. Interferometric measurements of the primary, a precise Gaia parallax, and moderate-resolution spectroscopy can better constrain the system's age and how HD 1160 B fits within the context of (sub) stellar evolution.
    ISSN
    1538-4357
    DOI
    10.3847/1538-4357/834/2/162
    Version
    Final published version
    Sponsors
    BF foundation; Fisk-Vanderbilt Bridge Program; JSPS [23103002, 23340051, 26220704, 25-8826]; U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344, LLNL-JRNL-701012-DRAFT]; U.S. National Science Foundation [1009203]
    Additional Links
    http://stacks.iop.org/0004-637X/834/i=2/a=162?key=crossref.f5ee5c9267fed98d40fa33e079bdf46f
    ae974a485f413a2113503eed53cd6c53
    10.3847/1538-4357/834/2/162
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    UA Faculty Publications

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