We present the ground-based detection of the secondary eclipse of the transiting exoplanet WASP-19b. The observations were made in the Sloan z' band using the ULTRACAM triple-beam CCD camera mounted on the New Technology Telescope. The measurement shows a 0.088% ± 0.019% eclipse depth, matching previous predictions based on H- and K-band measurements. We discuss in detail our approach to the removal of errors arising due to systematics in the data set, in addition to fitting a model transit to our data. This fit returns an eclipse center, T 0, of 2455578.7676 HJD, consistent with a circular orbit. Our measurement of the secondary eclipse depth is also compared to model atmospheres of WASP-19b and is found to be consistent with previous measurements at longer wavelengths for the model atmospheres we investigated.
ASJC Scopus subject areas
- Space and Planetary Science
- Astronomy and Astrophysics
Burton, J., Watson, C., Littlefair, S., Dhillon, V., Gibson, N., Marsh, T., & Pollacco, D. (2012). z'-band Ground-based Detection of the Secondary Eclipse of WASP-19b. Astrophysical Journal, 201(2), . https://doi.org/10.1088/0067-0049/201/2/36, https://doi.org/10.1088/0067-0049/201/2/36