Secondary eclipse observations for seven hot-Jupiters from the Anglo-Australian Telescope
Article
Article Title | Secondary eclipse observations for seven hot-Jupiters from the Anglo-Australian Telescope |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Zhou, G. (Author), Bayliss, D. D. R. (Author), Kedziora-Chudczer, L. (Author), Tinney, C. G. (Author), Bailey, J. (Author), Salter, G. (Author) and Rodriguez, J. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 454 (3), pp. 3002-3019 |
Number of Pages | 18 |
Year | 2015 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stv2138 |
Web Address (URL) | https://academic.oup.com/mnras/article/454/3/3002/1200704 |
Abstract | We report detections and constraints for the near-infrared Ks band secondary eclipses of seven hot-Jupiters using the IRIS2 infrared camera on the Anglo-Australian Telescope. Eclipses in the Ks band for WASP-18b and WASP-36b have been measured for the first time. We also present new measurements for the eclipses of WASP-4b, WASP-5b, and WASP-46b, as well as upper limits for the eclipse depths of WASP-2b and WASP-76b. In particular, two full eclipses of WASP-46b were observed, allowing us to demonstrate the repeatability of our observations via independent analyses on each eclipse. Significant numbers of eclipse depths for hot-Jupiters have now been measured in both Ks and the four Spitzer IRAC bandpasses. We discuss these measurements in the context of the broad-band colours and brightness temperatures of the hot-Jupiter atmosphere distribution. Specifically, we re-examine the proposed temperature dichotomy between the most irradiated, and mildly irradiated planets. We find no evidence for multiple clusters in the brightness temperature-equilibrium temperature distributions in any of these bandpasses, suggesting a continuous distribution of heat re-emission and circulation characteristics for these planets. |
Keywords | Occultations; Planets and satellites: atmospheres; Astrophysics - Earth and Planetary Astrophysics |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | Australian National University |
University of New South Wales | |
Marseille Astrophysics Laboratory, France | |
Vanderbilt University, United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6x76/secondary-eclipse-observations-for-seven-hot-jupiters-from-the-anglo-australian-telescope
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