Mallonn, M., Bernt, I., Herrero, E. et al. (12 more authors) (2016) Broad-band spectrophotometry of HAT-P-32 b: search for a scattering signature in the planetary spectrum. Monthly Notices of the Royal Astronomical Society, 463 (1). pp. 604-614. ISSN 0035-8711
Abstract
Multicolour broad-band transit observations offer the opportunity to characterize the atmosphere of an extrasolar planet with small- to medium-sized telescopes. One of the most favourable targets is the hot Jupiter HAT-P-32 b. We combined 21 new transit observations of this planet with 36 previously published light curves for a homogeneous analysis of the broad-band transmission spectrum from the Sloan u′ band to the Sloan z′ band. Our results rule out cloud-free planetary atmosphere models of solar metallicity. Furthermore, a discrepancy at reddest wavelengths to previously published results makes a recent tentative detection of a scattering feature less likely. Instead, the available spectral measurements of HAT-P-32 b favour a completely flat spectrum from the near-UV to the near-IR. A plausible interpretation is a thick cloud cover at high altitudes.
Metadata
Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 The Author(s). Reproduced in accordance with the publisher's self-archiving policy. | ||||
Keywords: | techniques: photometric; planets and satellites: atmosphere; planets and satellites: individual: HAT-P-32 b | ||||
Dates: |
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Institution: | The University of Sheffield | ||||
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) | ||||
Funding Information: |
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Depositing User: | Symplectic Sheffield | ||||
Date Deposited: | 15 Jun 2017 09:42 | ||||
Last Modified: | 15 Jun 2017 09:42 | ||||
Published Version: | https://doi.org/10.1093/mnras/stw1999 | ||||
Status: | Published | ||||
Publisher: | Oxford University Press | ||||
Refereed: | Yes | ||||
Identification Number: | https://doi.org/10.1093/mnras/stw1999 |