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

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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 languageEnglish
JournalMonthly Notices of the Royal Astronomical Society: Letters
Early online date03 Feb 2021
DOIs
Publication statusEarly 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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