Scattering transparency of clouds in exoplanet transit spectra
dc.contributor.author | Jaiswal, B. | |
dc.contributor.author | Robinson, T.D. | |
dc.date.accessioned | 2024-08-12T20:38:59Z | |
dc.date.available | 2024-08-12T20:38:59Z | |
dc.date.issued | 2023-05-29 | |
dc.identifier.citation | Bhavesh Jaiswal, Tyler D Robinson, Scattering transparency of clouds in exoplanet transit spectra, Monthly Notices of the Royal Astronomical Society, Volume 523, Issue 2, August 2023, Pages 2809–2817, https://doi.org/10.1093/mnras/stad1610 | |
dc.identifier.issn | 0035-8711 | |
dc.identifier.doi | 10.1093/mnras/stad1610 | |
dc.identifier.uri | http://hdl.handle.net/10150/674229 | |
dc.description.abstract | The presence of aerosols in an exoplanet atmosphere can veil the underlying material and can lead to a flat transmission spectrum during primary transit observations. In this work, we explore forward scattering effects from supermicron-sized aerosol particles present in the atmosphere of a transiting exoplanet. We find that the impacts of forward scattering from larger aerosols can significantly impact exoplanet transits and the strength of these effects can be dependent on wavelength. In certain cloud configurations, the forward-scattered light can effectively pass through the clouds unhindered, thus rendering the clouds transparent. The dependence of the aerosol scattering properties on wavelength can then lead to a positive slope in the transit spectrum. These slopes are characteristically different from both Rayleigh and aerosol absorption slopes. As examples, we demonstrate scattering effects for both a rocky world and a hot Jupiter. In these models, the predicted spectral slopes due to forward-scattering effects can manifest in the transit spectrum at the level of ∼10-∼100 s of parts per million and, hence, could be observable with NASA's JWST. © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society. | |
dc.language.iso | en | |
dc.publisher | Oxford University Press | |
dc.rights | © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society. | |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | |
dc.subject | exoplanets | |
dc.subject | radiative transfer | |
dc.title | Scattering transparency of clouds in exoplanet transit spectra | |
dc.type | Article | |
dc.type | text | |
dc.contributor.department | Lunar and Planetary Laboratory, University of Arizona | |
dc.contributor.department | Habitability, Atmospheres, and Biosignatures Laboratory, University of Arizona | |
dc.identifier.journal | Monthly Notices of the Royal Astronomical Society | |
dc.description.note | Immediate access | |
dc.description.collectioninformation | This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu. | |
dc.eprint.version | Final Published Version | |
dc.source.journaltitle | Monthly Notices of the Royal Astronomical Society | |
refterms.dateFOA | 2024-08-12T20:38:59Z |