J/A+A/637/A36 WASP-121b optical phase curve (Bourrier+, 2020)
Optical phase curve of the ultra-hot Jupiter WASP-121b.
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 N., Caldwell D.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., Suarez-Mascareno A.,
Udry S., Vanderspek R., Wyttenbach A.
<Astron. Astrophys. 637, A36 (2020)>
=2020A&A...637A..36B 2020A&A...637A..36B (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Photometry
Keywords: planetary systems - planets and satellites: individual: WASP-121b -
planets and satellites: atmospheres - techniques: photometric
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±50K) to the nightside (<2500K 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.
Description:
Binned TESS light curve of WASP-121b, phase-folded at the orbital
period of the planet. The flux is normalized to unity during the
secondary eclipse, when the stellar light alone is measured.
Objects:
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RA (2000) DE Designation(s)
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07 10 24.06 -39 05 50.6 WASP 121 = TYC 7630-352-1
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
lccurve.dat 34 151 Photometry of WASP-121
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See also:
J/A+A/623/A57 : WASP-121b Swift UVOT near-UV transit observations (Salz+, 2019)
J/A+A/625/A80 : WASP-121b secondary eclipse in 2MASS K band (Kovacs+, 2019)
Byte-by-byte Description of file: lccurve.dat
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Bytes Format Units Label Explanations
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1- 12 F12.8 h Time Time relative to the mid-transit of WASP-121b
14- 23 F10.8 --- Phot Normalized photometry
25- 34 F10.8 --- e_Phot Error on normalized photometry
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Acknowledgements:
Vincent Bourrier, Vincent.Bourrier(at)unige.ch
Department of astronomy, University of Geneva, Switzerland
(End) Vincent Bourrier [Geneva, Switzerland], Patricia Vannier [CDS] 01-Apr-2020