Phase curve and variability analysis of WASP-12b using TESS photometry

Niall Owens; E. J. W. de Mooij; C. A. Watson; M. J. Hooton

doi:10.1093/mnrasl/slab014

Phase curve and variability analysis of WASP-12b using TESS photometry

Niall Owens, E. J. W. de Mooij, C. A. Watson, M. J. Hooton

School of Mathematics and Physics

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Abstract

We analyse Sector 20 TESS photometry of the ultra-hot Jupiter WASP-12b, and extract its phase curve to study the planet's atmospheric properties. We successfully recover the phase curve with an amplitude of 549 $\pm$ 62 ppm, and a secondary eclipse depth of 609$^{+74}_{-73}$ ppm. The peak of the phase curve is shifted by 0.049 $\pm$ 0.015 in phase, implying that the brightest spot in the atmosphere is shifted from the substellar point towards the planet's evening terminator. Assuming zero albedo, the eclipse depth infers a day-side brightness temperature of 3128$^{+64}_{-68}$ K. No significant detection of flux from the night-side is found at 60 $\pm$ 97 ppm, implying a night-side brightness temperature of $

Original language	English
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Early online date	03 Feb 2021
DOIs	https://doi.org/10.1093/mnrasl/slab014
Publication status	Early online date - 03 Feb 2021

Keywords

planets and satellites: atmospheres
planets and satellites: individual: WASP-12b
planets and satellites: gaseous
techniques: photometric

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Phase curve and variability analysis of WASP-12b using TESS photometry
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title = "Phase curve and variability analysis of WASP-12b using TESS photometry",

abstract = "We analyse Sector 20 TESS photometry of the ultra-hot Jupiter WASP-12b, and extract its phase curve to study the planet's atmospheric properties. We successfully recover the phase curve with an amplitude of 549 $\pm$ 62 ppm, and a secondary eclipse depth of 609$^{+74}_{-73}$ ppm. The peak of the phase curve is shifted by 0.049 $\pm$ 0.015 in phase, implying that the brightest spot in the atmosphere is shifted from the substellar point towards the planet's evening terminator. Assuming zero albedo, the eclipse depth infers a day-side brightness temperature of 3128$^{+64}_{-68}$ K. No significant detection of flux from the night-side is found at 60 $\pm$ 97 ppm, implying a night-side brightness temperature of $",

keywords = "planets and satellites: atmospheres, planets and satellites: individual: WASP-12b, planets and satellites: gaseous, techniques: photometric",

author = "Niall Owens and {de Mooij}, {E. J. W.} and Watson, {C. A.} and Hooton, {M. J.}",

year = "2021",

month = feb,

day = "3",

doi = "10.1093/mnrasl/slab014",

language = "English",

journal = "Monthly Notices of the Royal Astronomical Society: Letters",

issn = "1745-3925",

publisher = "Oxford University Press",

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TY - JOUR

T1 - Phase curve and variability analysis of WASP-12b using TESS photometry

AU - Owens, Niall

AU - de Mooij, E. J. W.

AU - Watson, C. A.

AU - Hooton, M. J.

PY - 2021/2/3

Y1 - 2021/2/3

N2 - We analyse Sector 20 TESS photometry of the ultra-hot Jupiter WASP-12b, and extract its phase curve to study the planet's atmospheric properties. We successfully recover the phase curve with an amplitude of 549 $\pm$ 62 ppm, and a secondary eclipse depth of 609$^{+74}_{-73}$ ppm. The peak of the phase curve is shifted by 0.049 $\pm$ 0.015 in phase, implying that the brightest spot in the atmosphere is shifted from the substellar point towards the planet's evening terminator. Assuming zero albedo, the eclipse depth infers a day-side brightness temperature of 3128$^{+64}_{-68}$ K. No significant detection of flux from the night-side is found at 60 $\pm$ 97 ppm, implying a night-side brightness temperature of $

AB - We analyse Sector 20 TESS photometry of the ultra-hot Jupiter WASP-12b, and extract its phase curve to study the planet's atmospheric properties. We successfully recover the phase curve with an amplitude of 549 $\pm$ 62 ppm, and a secondary eclipse depth of 609$^{+74}_{-73}$ ppm. The peak of the phase curve is shifted by 0.049 $\pm$ 0.015 in phase, implying that the brightest spot in the atmosphere is shifted from the substellar point towards the planet's evening terminator. Assuming zero albedo, the eclipse depth infers a day-side brightness temperature of 3128$^{+64}_{-68}$ K. No significant detection of flux from the night-side is found at 60 $\pm$ 97 ppm, implying a night-side brightness temperature of $

KW - planets and satellites: atmospheres

KW - planets and satellites: individual: WASP-12b

KW - planets and satellites: gaseous

KW - techniques: photometric

U2 - 10.1093/mnrasl/slab014

DO - 10.1093/mnrasl/slab014

M3 - Article

SN - 1745-3925

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

ER -

Phase curve and variability analysis of WASP-12b using TESS photometry

Abstract

Keywords

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