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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/32072
DC FieldValueLanguage
dc.contributor.authorBourrier, V.en_US
dc.contributor.authorEhrenreich, D.en_US
dc.contributor.authorLendl, M.en_US
dc.contributor.authorCretignier, M.en_US
dc.contributor.authorAllart, R.en_US
dc.contributor.authorDumusque, X.en_US
dc.contributor.authorCegla, H. M.en_US
dc.contributor.authorSuárez-Mascareño, A.en_US
dc.contributor.authorWyttenbach, A.en_US
dc.contributor.authorHoeijmakers, H. J.en_US
dc.contributor.authorMelo, C.en_US
dc.contributor.authorKuntzer, T.en_US
dc.contributor.authorAstudillo-Defru, N.en_US
dc.contributor.authorGiles, H.en_US
dc.contributor.authorHeng, K.en_US
dc.contributor.authorKitzmann, D.en_US
dc.contributor.authorLavie, B.en_US
dc.contributor.authorLovis, C.en_US
dc.contributor.authorMurgas, F.en_US
dc.contributor.authorNascimbeni, V.en_US
dc.contributor.authorPepe, F.en_US
dc.contributor.authorPino, Lorenzoen_US
dc.contributor.authorSegransan, D.en_US
dc.contributor.authorUdry, S.en_US
dc.date.accessioned2022-04-01T10:18:51Z-
dc.date.available2022-04-01T10:18:51Z-
dc.date.issued2020en_US
dc.identifier.issn0004-6361en_US
dc.identifier.urihttp://hdl.handle.net/20.500.12386/32072-
dc.description.abstractUltra-hot Jupiters offer interesting prospects for expanding our theories on dynamical evolution and the properties of extremely irradiated atmospheres. In this context, we present the analysis of new optical spectroscopy for the transiting ultra-hot Jupiter WASP-121b. We first refine the orbital properties of WASP-121b, which is on a nearly polar (obliquity ψ<SUP>North</SUP> = 88.1 ± 0.25° or ψ<SUP>South</SUP> = 91.11 ± 0.20°) orbit, and exclude a high differential rotation for its fast-rotating (P < 1.13 days), highly inclined (i<SUB>⋆</SUB><SUP>North</SUP> = 8.1<SUB>-2.6</SUB><SUP>+3.0</SUP>° or i<SUB>⋆</SUB><SUP>South</SUP> = 171.9<SUB>-3.4</SUB><SUP>+2.5</SUP>°) star. We then present a new method that exploits the reloaded Rossiter-McLaughlin technique to separate the contribution of the planetary atmosphere and of the spectrum of the stellar surface along the transit chord. Its application to HARPS transit spectroscopy of WASP-121b reveals the absorption signature from metals, likely atomic iron, in the planet atmospheric limb. The width of the signal (14.3 ± 1.2 km s<SUP>-1</SUP>) can be explained by the rotation of the tidally locked planet. Its blueshift (-5.2 ± 0.5 km s<SUP>-1</SUP>) could trace strong winds from the dayside to the nightside, or the anisotropic expansion of the planetary thermosphere. <P />The custom CCF mask built for WASP-121, and the EulerCam lightcurves are only available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (<A href="http://cdsarc.u-strasbg.fr">http://130.79.128.5</A>) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/635/A205">http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/635/A205</A> <P />Based on observations made at ESO 3.6 m telescope (La Silla, Chile) under ESO programme 100.C-0750.en_US
dc.language.isoengen_US
dc.titleHot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS). III. Atmospheric structure of the misaligned ultra-hot Jupiter WASP-121ben_US
dc.typeArticle-
dc.identifier.doi10.1051/0004-6361/201936640en_US
dc.identifier.urlhttps://www.aanda.org/articles/aa/full_html/2020/03/aa36640-19/aa36640-19.htmlen_US
dc.relation.mediumSTAMPAen_US
dc.relation.volume635en_US
dc.relation.firstpageA205en_US
dc.type.refereeREF_1en_US
dc.description.internationalsìen_US
dc.relation.scientificsectorFIS/05 - ASTRONOMIA E ASTROFISICAen_US
dc.relation.journalASTRONOMY & ASTROPHYSICSen_US
dc.type.miur262 Articolo in rivista-
dc.identifier.adsbibcode2020A&A...635A.205Ben_US
dc.description.apcnoen_US
dc.description.oa1 – prodotto con file in versione Open Access (allegare il file al passo  5-Carica)en_US
item.grantfulltextopen-
item.fulltextWith Fulltext-
item.openairetypeArticle-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
crisitem.journal.journalissn0004-6361-
crisitem.journal.anceE016240-
crisitem.author.deptO.A. Arcetri-
crisitem.author.orcid0000-0002-1321-8856-
Appears in Collections:1.01 Articoli in rivista
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