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Keys of a Mission to Uranus or Neptune, the Closest Ice Giants

hal.structure.identifierJoseph Louis LAGRANGE [LAGRANGE]
dc.contributor.authorGUILLOT, Tristan
dc.contributor.authorFORTNEY, , Jonathan
dc.contributor.authorRAUSCHER, Emily
dc.contributor.authorMARLEY, Mark S.
dc.contributor.authorPARMENTIER, Vivien
dc.contributor.authorLINE, Mike
dc.contributor.authorWAKEFORD, Hannah
dc.contributor.authorKASPI, Yohai
dc.contributor.authorHELLED, Ravit
dc.contributor.authorIKOMA, Masahiro
dc.contributor.authorKNUTSON, Heather
dc.contributor.authorMENOU, Kristen
dc.contributor.authorVALENCIA, Diana
dc.contributor.authorDURANTE, Daniele
dc.contributor.authorIDA, Shigeru
dc.contributor.authorBOLTON, Scott J.
dc.contributor.authorLI, Cheng
dc.contributor.authorSTEVENSON, Kevin B.
dc.contributor.authorBEAN, Jacob
dc.contributor.authorCOWAN, Nicolas B.
dc.contributor.authorHOFSTADTER, Mark D.
dc.contributor.authorHUESO, Ricardo
hal.structure.identifierECLIPSE 2020
dc.contributor.authorLECONTE, Jeremy
dc.contributor.authorLI, Liming
dc.contributor.authorMORDASINI, Christoph
dc.contributor.authorMOUSIS, Olivier
dc.contributor.authorNETTELMANN, Nadine
dc.contributor.authorSODERLUND, Krista
dc.contributor.authorWONG, Michael H.
dc.date.issued2020-07-15
dc.descriptionA White Paper for the NASA Decadal Survey of Planetary Sciences and Astrobiology
dc.description.abstractEnUranus and Neptune are the archetypes of "ice giants", a class of planets that may be among the most common in the Galaxy. They hold the keys to understand the atmospheric dynamics and structure of planets with hydrogen atmospheres inside and outside the solar system; however, they are also the last unexplored planets of the Solar System. Their atmospheres are active and storms are believed to be fueled by methane condensation which is both extremely abundant and occurs at low optical depth. This means that mapping temperature and methane abundance as a function of position and depth will inform us on how convection organizes in an atmosphere with no surface and condensates that are heavier than the surrounding air, a general feature of giant planets. Owing to the spatial and temporal variability of these atmospheres, an orbiter is required. A probe would provide a reference atmospheric profile to lift ambiguities inherent to remote observations. It would also measure the abundances of noble gases which can be used to reconstruct the history of planet formation in the Solar System. Finally, mapping the planets' gravity and magnetic fields will be essential to constrain their global composition, atmospheric dynamics, structure and evolution. An exploration of Uranus or Neptune will be essential to understand these planets and will also be key to constrain and analyze data obtained at Jupiter, Saturn, and for numerous exoplanets with hydrogen atmospheres.
dc.language.isoen
dc.title.enKeys of a Mission to Uranus or Neptune, the Closest Ice Giants
dc.typeAutre document
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR]
hal.identifierhal-03049004
hal.version1
hal.popularnon
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03049004v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2020-07-15&rft.au=GUILLOT,%20Tristan&FORTNEY,%20,%20Jonathan&RAUSCHER,%20Emily&MARLEY,%20Mark%20S.&PARMENTIER,%20Vivien&rft.genre=unknown


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