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    Optical phase curve of the ultra-hot Jupiter WASP-121b

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    Optical phase curve of the ultra-hot Jupiter WASP-121b.pdf (486.2Kb)
    Date
    2020-05
    Author
    Bourrier, V.
    Kitzmann, D.
    Kuntzer, T.
    Nascimbeni, V.
    Lendl, M.
    Lavie, B.
    Hoeijmakers, H. J.
    Pino, L.
    Ehrenreich, D.
    Heng, K.
    Allart, R.
    Cegla, H. M.
    Dumusque, X.
    Melo, C.
    Astudillo Defru, Nicola
    Caldwell, Douglas A.
    Cretignier, M.
    Giles, H.
    Henze, C. E.
    Jenkins, J.
    Lovis, C.
    Murgas, F.
    Pepe, F.
    Ricker, G. R.
    Rose, M. E.
    Seager, S.
    Segransan, D.
    Suárez-Mascareño, A.
    Udry, S.
    Vanderspek, R.
    Wyttenbach, A.
    Publisher
    EDP Sciences
    Description
    Artículo de publicación ISI
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    Abstract
    We present the analysis of TESS optical photometry of WASP-121b, which reveals the phase curve of this transiting ultra-hot Jupiter. Its hotspot is located at the sub-stellar point, showing inefficient heat transport from the dayside (2870 ± 50 K) to the nightside (<2500 K at 3σ) at the altitudes probed by TESS. The TESS eclipse depth, measured at the shortest wavelength to date for WASP-121b, confirms the strong deviation from blackbody planetary emission. Our atmospheric retrieval on the complete emission spectrum supports the presence of a temperature inversion, which can be explained by the presence of VO and possibly TiO and FeH. The strong planetary emission at short wavelengths could arise from an H− continuum.
    URI
    http://repositoriodigital.ucsc.cl/handle/25022009/2374
    Ir a texto completo en URI:
    https://doi.org/10.1051/0004-6361/201936647
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