Show simple item record

dc.contributor.authorBaluev, R. V.
dc.contributor.authorSokov, E. N.
dc.contributor.authorJones, H. R. A.
dc.contributor.authorShaidulin, V. Sh
dc.contributor.authorSokova, I. A.
dc.contributor.authorNielsen, L. D.
dc.contributor.authorBenni, P.
dc.contributor.authorSchneiter, E. M.
dc.contributor.authorD'Angelo, C. Villarreal
dc.contributor.authorFernández-Lajús, E.
dc.contributor.authorSisto, R. P. Di
dc.contributor.authorBaştürk, Ö.
dc.contributor.authorBretton, M.
dc.contributor.authorWunsche, A.
dc.contributor.authorHentunen, V. -P.
dc.contributor.authorShadick, S.
dc.contributor.authorJongen, Y.
dc.contributor.authorKang, W.
dc.contributor.authorKim, T.
dc.contributor.authorPakštienė, E.
dc.contributor.authorQvam, J. K. T.
dc.contributor.authorKnight, C. R.
dc.contributor.authorGuerra, P.
dc.contributor.authorMarchini, A.
dc.contributor.authorSalvaggio, F.
dc.contributor.authorPapini, R.
dc.contributor.authorEvans, P.
dc.contributor.authorSalisbury, M.
dc.contributor.authorGarcia, F.
dc.contributor.authorMolina, D.
dc.contributor.authorGarlitz, J.
dc.contributor.authorEsseiva, N.
dc.contributor.authorOgmen, Y.
dc.contributor.authorKaravaev, Yu
dc.contributor.authorRusov, S.
dc.contributor.authorIbrahimov, M. A.
dc.contributor.authorKarimov, R. G.
dc.date.accessioned2019-10-16T00:10:12Z
dc.date.available2019-10-16T00:10:12Z
dc.date.issued2019-11
dc.identifier.citationBaluev , R V , Sokov , E N , Jones , H R A , Shaidulin , V S , Sokova , I A , Nielsen , L D , Benni , P , Schneiter , E M , D'Angelo , C V , Fernández-Lajús , E , Sisto , R P D , Baştürk , Ö , Bretton , M , Wunsche , A , Hentunen , V -P , Shadick , S , Jongen , Y , Kang , W , Kim , T , Pakštienė , E , Qvam , J K T , Knight , C R , Guerra , P , Marchini , A , Salvaggio , F , Papini , R , Evans , P , Salisbury , M , Garcia , F , Molina , D , Garlitz , J , Esseiva , N , Ogmen , Y , Karavaev , Y , Rusov , S , Ibrahimov , M A & Karimov , R G 2019 , ' Homogeneously derived transit timings for 17 exoplanets and reassessed TTV trends for WASP-12 and WASP-4 ' , Monthly Notices of the Royal Astronomical Society , vol. 490 , no. 1 , pp. 1294-1312 . https://doi.org/10.1093/mnras/stz2620
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 17486514
dc.identifier.otherPURE UUID: a09dce36-f4ef-4753-b057-0388bba2a58a
dc.identifier.otherArXiv: http://arxiv.org/abs/1908.04505v1
dc.identifier.otherScopus: 85075252535
dc.identifier.urihttp://hdl.handle.net/2299/21746
dc.description19 pages, 4 figures, 6 tables; revised manuscript submitted to MNRAS; online-only supplements are in the download archive
dc.description.abstractWe homogeneously analyse ∼3.2 × 10 5 photometric measurements for ∼1100 transit light curves belonging to 17 exoplanet hosts. The photometric data cover 16 years (2004–2019) and include amateur and professional observations. Old archival light curves were reprocessed using up-to-date exoplanetary parameters and empirically debiased limb-darkening models. We also derive self-consistent transit and radial-velocity fits for 13 targets. We confirm the nonlinear transit timing variation (TTV) trend in the WASP-12 data at a high significance, and with a consistent magnitude. However, Doppler data reveal hints of a radial acceleration of about −7.5 ± 2.2 m s −1 yr −1, indicating the presence of unseen distant companions, and suggesting that roughly 10 per cent of the observed TTV was induced via the light-travel (or Roemer) effect. For WASP-4, a similar TTV trend suspected after the recent TESS observations appears controversial and model dependent. It is not supported by our homogeneous TTV sample, including 10 ground-based EXPANSION light curves obtained in 2018 simultaneously with TESS. Even if the TTV trend itself does exist in WASP-4, its magnitude and tidal nature are uncertain. Doppler data cannot entirely rule out the Roemer effect induced by possible distant companions.en
dc.format.extent19
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.subjectastro-ph.EP
dc.subjectSurveys
dc.subjectTechniques: photometric
dc.subjectMethods: statistical
dc.subjectTechniques: radial velocities
dc.subjectMethods: data analysis
dc.subjectPlanetary systems
dc.subjectAstronomy and Astrophysics
dc.subjectSpace and Planetary Science
dc.titleHomogeneously derived transit timings for 17 exoplanets and reassessed TTV trends for WASP-12 and WASP-4en
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionCentre of Data Innovation Research
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85075252535&partnerID=8YFLogxK
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnras/stz2620
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record