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dc.contributor.authorGandhi, S
dc.contributor.authorBrogi, M
dc.contributor.authorYurchenko, SN
dc.contributor.authorTennyson, J
dc.contributor.authorColes, PA
dc.contributor.authorWebb, RK
dc.contributor.authorBirkby, JL
dc.contributor.authorGuilluy, G
dc.contributor.authorHawker, GA
dc.contributor.authorMadhusudhan, N
dc.contributor.authorBonomo, AS
dc.contributor.authorSozzetti, A
dc.date.accessioned2021-01-16T00:31:01Z
dc.date.available2021-01-16T00:31:01Z
dc.date.issued2020
dc.identifier.issn0035-8711
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/316264
dc.description.abstractHigh resolution spectroscopy (HRS) has been used to detect a number of species in the atmospheres of hot Jupiters. Key to such detections is accurately and precisely modelled spectra for cross-correlation against the R$\gtrsim$20,000 observations. There is a need for the latest generation of opacities which form the basis for high signal-to-noise detections using such spectra. In this study we present and make publicly available cross sections for six molecular species, H$_2$O, CO, HCN, CH$_4$, NH$_3$ and CO$_2$ using the latest line lists most suitable for low- and high-resolution spectroscopy. We focus on the infrared (0.95-5~$\mu$m) and between 500-1500~K where these species have strong spectral signatures. We generate these cross sections on a grid of pressures and temperatures typical for the photospheres of super Earth, warm Neptunes and hot Jupiters using the latest H$_2$ and He pressure broadening. We highlight the most prominent infrared spectral features by modelling three representative exoplanets, GJ~1214~b, GJ~3470~b and HD~189733~b, which encompass a wide range in temperature, mass and radii. In addition, we verify the line lists for H$_2$O, CO and HCN with previous high resolution observations of hot Jupiters. However, we are unable to detect CH$_4$ with our new cross sections from HRS observations of HD~102195~b. These high accuracy opacities are critical for atmospheric detections with HRS and will be continually updated as new data becomes available.
dc.publisherOxford University Press (OUP)
dc.rightsAll rights reserved
dc.titleMolecular cross-sections for high-resolution spectroscopy of super-Earths, warm Neptunes, and hot Jupiters
dc.typeArticle
prism.endingPage237
prism.issueIdentifier1
prism.publicationDate2020
prism.publicationNameMonthly Notices of the Royal Astronomical Society
prism.startingPage224
prism.volume495
dc.identifier.doi10.17863/CAM.63373
rioxxterms.versionofrecord10.1093/mnras/staa981
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2020-06-01
dc.contributor.orcidNikku, Madhusudhan [0000-0002-4869-000X]
dc.identifier.eissn1365-2966
dc.publisher.urlhttp://dx.doi.org/10.1093/mnras/staa981
rioxxterms.typeJournal Article/Review
pubs.funder-project-idScience and Technology Facilities Council (ST/N000927/1)
cam.issuedOnline2020-04-23


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