Ground-based detections of thermal emission from CoRoT-1b and WASP-12b

Ming Zhao, John D. Monnier, Mark R. Swain, Travis Barman, Sasha Hinkley

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


We report a new detection of the H-band thermal emission of CoRoT-1b and two confirmation detections of the Ks-band thermal emission of WASP-12b at secondary eclipses. The H-band measurement of CoRoT-1b shows an eclipse depth of 0.145% ± 0.049% with a 3σ percentile between 0.033% and 0.235%. This depth is consistent with the previous conclusions that the planet has an isothermal region with inefficient heat transport from day side to night side, and has a dayside thermal inversion layer at high altitude. The two Ks-band detections of WASP-12b show a joint eclipse depth of 0.299% ± 0.065%. This result agrees with the measurement of Croll & collaborators, providing independent confirmation of their measurement. The repeatability of the WASP-12b measurements also validates our data analysis method. Our measurements, in addition to a number of previous results made with other telescopes, demonstrate that ground-based observations are becoming widely available for characterization of atmospheres of hot Jupiters.

Original languageEnglish (US)
Article number122
JournalAstrophysical Journal
Issue number2
StatePublished - Jan 10 2012


  • infrared: planetary systems
  • planetary systems
  • stars: individual (CoRoT-1, WASP-12)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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