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    Three’s Company: An Additional Non-transiting Super-Earth in the Bright HD 3167 System, and Masses for All Three Planets

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    Christiansen_2017_AJ_154_122.pdf
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    Author
    Christiansen, Jessie L. cc
    Vanderburg, Andrew cc
    Burt, Jennifer cc
    Fulton, B. J. cc
    Batygin, Konstantin
    Benneke, Björn
    Brewer, John M. cc
    Charbonneau, David cc
    Ciardi, David R.
    Cameron, Andrew Collier
    Coughlin, Jeffrey L. cc
    Crossfield, Ian J. M.
    Dressing, Courtney cc
    Greene, Thomas P. cc
    Howard, Andrew W. cc
    Latham, David W. cc
    Molinari, Emilio cc
    Mortier, Annelies cc
    Mullally, Fergal
    Pepe, Francesco
    Rice, Ken
    Sinukoff, Evan cc
    Sozzetti, Alessandro cc
    Thompson, Susan E. cc
    Udry, Stéphane
    Vogt, Steven S. cc
    Barman, Travis S. cc
    Batalha, Natasha E. cc
    Bouchy, François
    Buchhave, Lars A. cc
    Butler, R. Paul cc
    Cosentino, Rosario
    Dupuy, Trent J. cc
    Ehrenreich, David cc
    Fiorenzano, Aldo
    Hansen, Brad M. S.
    Henning, Thomas
    Hirsch, Lea cc
    Holden, Bradford cc
    Isaacson, Howard T. cc
    Johnson, John A. cc
    Knutson, Heather A.
    Kosiarek, Molly cc
    López-Morales, Mercedes
    Lovis, Christophe
    Malavolta, Luca cc
    Mayor, Michel
    Micela, Giuseppina
    Motalebi, Fatemeh
    Petigura, Erik cc
    Phillips, David F.
    Piotto, Giampaolo cc
    Rogers, Leslie A. cc
    Sasselov, Dimitar cc
    Schlieder, Joshua E. cc
    Ségransan, Damien
    Watson, Christopher A.
    Weiss, Lauren M. cc
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    Affiliation
    Univ Arizona, Lunar & Planetary Lab
    Issue Date
    2017-08-31
    Keywords
    eclipses
    stars: individual (HD 3167)
    techniques: photometric
    techniques: spectroscopic
    
    Metadata
    Show full item record
    Publisher
    IOP PUBLISHING LTD
    Citation
    Three’s Company: An Additional Non-transiting Super-Earth in the Bright HD 3167 System, and Masses for All Three Planets 2017, 154 (3):122 The Astronomical Journal
    Journal
    The Astronomical 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
    HD 3167 is a bright (V = 8.9), nearby KO star observed by the NASA K2 mission (EPIC 220383386), hosting two small, short-period transiting planets. Here we present the results of a multi-site, multi-instrument radial-velocity campaign to characterize the HD 3167 system. The masses of the transiting planets are 5.02 +/- 0.38 M-circle plus for HD 3167 b, a hot super-Earth with a likely rocky composition (rho(b) = 5.6(-1.43)(+2.15) g cm(-3)), and 9.80(-1.24)(+1.30) M-circle plus for HD 3167 c, a warm sub-Neptune with a likely substantial volatile complement (rho(c) = 1.97(-0.59)(+0.94) g cm(-3)). We explore the possibility of atmospheric composition analysis and determine that planet c is amenable to transmission spectroscopy measurements, and planet b is a potential thermal emission target. We detect a third, non-transiting planet, HD 3167 d, with a period of 8.509 +/- 0.045 d (between planets b and c) and a minimum mass of 6.90 +/- 0.71 M-circle plus. We are able to constrain the mutual inclination of planet d with planets b and c: we rule out mutual inclinations below 1.degrees 3 because we do not observe transits of planet d. From 1.degrees 3 to 40 degrees, there are viewing geometries invoking special nodal configurations, which result in planet d not transiting some fraction of the time.
    ISSN
    1538-3881
    DOI
    10.3847/1538-3881/aa832d
    Version
    Final published version
    Sponsors
    NASA Astrophysics Data Analysis Program grant; K2 Guest Observer Program; National Science Foundation [2014184874]; European Union Seventh Framework Program (FP7) [313014]; John Templeton Foundation; NASA [NNX15AC90G, NNX17AB59G, NAS5-26555]; NASA Office of Space Science [NNX09AF08G]; U.S. Government [NAG W-2166]
    Additional Links
    http://stacks.iop.org/1538-3881/154/i=3/a=122?key=crossref.a44cb9651fab6166901dba2882729784
    ae974a485f413a2113503eed53cd6c53
    10.3847/1538-3881/aa832d
    Scopus Count
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