J/A+A/642/A50ivo://CDS.VizieR/J/A+A/642/A50doi:10.26093/cds/vizier.36420050CDSLuque R.Casasayas-Barris N.Parviainen H.Chen G.Palle E.,Livingston J.Bejar V.J.S.Crouzet N.Esparza-Borges E.Fukui A.,Hidalgo D.Kawashima Y.Kawauchi K.Klagyivik P.Kurita S.Kusakabe N.,de Leon J.P.Madrigal-Aguado A.Montanes-Rodriguez P.Mori M.Murgas F.,Narita N.Nishiumi T.Nowak G.Oshagh M.Sanchez-Benavente M.,Stangret M.Tamura M.Terada Y.Watanabe N.2021-09-08T07:21:24Z2020-10-02T07:47:05ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frmultiple-starsexoplanetsphotometryvisible-astronomyWe present new transit observations of the hot Jupiter WASP-74 b (Teq~1860K) using the high-resolution spectrograph HARPS-N and the multi-colour simultaneous imager MuSCAT2. We refined the orbital properties of the planet and its host star and measured its obliquity for the first time. The measured sky-projected angle between the stellar spin-axis and the orbital axis of the planet is compatible with an orbit that is well-aligned with the equator of the host star ({lambda}=0.77+/-0.99{deg}). We are not able to detect any absorption feature of H{alpha} or any other atomic spectral features in the high-resolution transmission spectra of this source owing to low S/N at the line cores. Despite previous claims regarding the presence of strong optical absorbers such as TiO and VO gases in the atmosphere of WASP-74 b, new ground-based photometry combined with a reanalysis of previously reported observations from the literature show a slope in the low-resolution transmission spectrum that is steeper than expected from Rayleigh scattering alone.2020A&A...642A..50Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/642/A50CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/MNRAS/485/5168 : Light curves of WASP-74 (Mancini+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/642/A50https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/642/A50http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/642/A50https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/642/A50https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/642/A50http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/642/A50GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/642/A50/listList of light curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObs.dateObservation datetime.epoch;obsnullableBand[gri z_s_] Observed bandinstr.bandpasscharNobsNumber of observationmeta.numberintlcShow the light curvesmeta.ref.urlcharFileNameName of the table, in subdirectory lcmeta.id;meta.tablecharTitleTitle of the tablemeta.title;meta.tablechar