2012/06/30 by J. R. Burton, C. A. Watson, S. P. Littlefair +4 · 58 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Eclipse #Exoplanet #Light curve #Scientific Research and Discoveries #Stellar, planetary, and galactic studies #Transit (satellite) #Wavelength #astro-ph.EP #astro-ph.SR
paper · pdf · doi:10.1088/0067-0049/201/2/36
published in The Astrophysical Journal Supplement Series 201(2), 36 (Institute of Physics) · 20 pages, 10 figures. Published in the ApJ Supplement series
openalex publication_date 2012/08/01 · arxiv created 2012/08/06 · arxiv updated 2012/08/08 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.