Examining the Broadband Emission Spectrum of WASP-19b: A New z-band Eclipse Detection
Article
Article Title | Examining the Broadband Emission Spectrum of WASP-19b: A New z-band Eclipse Detection |
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ERA Journal ID | 1057 |
Article Category | Article |
Authors | Zhou, George (Author), Kedziora-Chudczer, Lucyna (Author), Bayliss, Daniel D. R. (Author) and Bailey, Jeremy (Author) |
Journal Title | The Astrophysical Journal: an international review of astronomy and astronomical physics |
Journal Citation | 774 (2), pp. 1-8 |
Article Number | 118 |
Number of Pages | 8 |
Year | 2013 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-637X |
1538-4357 | |
Digital Object Identifier (DOI) | https://doi.org/10.1088/0004-637x/774/2/118 |
Web Address (URL) | https://iopscience.iop.org/article/10.1088/0004-637X/774/2/118 |
Abstract | WASP-19b is one of the most irradiated hot-Jupiters known. Its secondary eclipse is the deepest of all transiting planets and has been measured in multiple optical and infrared bands. We obtained a z-band eclipse observation with a measured depth of 0.080% ± 0.029%, using the 2 m Faulkes Telescope South, which is consistent with the results of previous observations. We combined our measurement of the z-band eclipse with previous observations to explore atmosphere models of WASP-19b that are consistent with its broadband spectrum. We use the VSTAR radiative transfer code to examine the effect of varying pressure-temperature profiles and C/O abundance ratios on the emission spectrum of the planet. We find that models with super-solar carbon enrichment best match the observations, which is consistent with previous model retrieval studies. We also include upper atmosphere haze as another dimension in the interpretation of exoplanet emission spectra and find that particles <0.5 μm in size are unlikely to be present in WASP-19b. |
Keywords | planets and satellites: atmospheres; planets and satellites:; individual: WASP-19b; Astrophysics - Earth and Planetary Astrophysics |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Australian National University |
University of New South Wales | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6x7q/examining-the-broadband-emission-spectrum-of-wasp-19b-a-new-z-band-eclipse-detection
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