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WASP-19b is one of the most irradiated hot-Jupiters known. Its secondaryeclipse is the deepest of all transiting planets, and has been measured inmultiple optical and infrared bands. We obtained a z band eclipse observation,with measured depth of 0.080 +/- 0.029 %, using the 2m Faulkes Telescope South,that is consistent with the results of previous observations. We combine ourmeasurement of the z band eclipse with previous observations to exploreatmosphere models of WASP-19b that are consistent with the its broadbandspectrum. We use the VSTAR radiative transfer code to examine the effect ofvarying pressure-temperature profiles and C/O abundance ratios on the emissionspectrum of the planet. We find models with super-solar carbon enrichment bestmatch the observations, consistent with previous model retrieval studies. Wealso include upper atmosphere haze as another dimension in the interpretationof exoplanet emission spectra, and find that particles <0.5 micron in size areunlikely to be present in WASP-19b.

Examining the broadband emission spectrum of WASP-19b: A new z band eclipse detection