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dc.contributor.author
Baluev, R. V.
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Sokov, E. N.
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Sokova, I. A.
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Shaidulin, V. Sh.
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Veselova, A. V.
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Aitov, V. N.
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Mitiani, G. Sh.
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Valeev, A. F.
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Gadelshin, D.R.
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Gutaev, A. G.
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Beskin, G.M.
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Valyavin, G. G.
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Antonyuk, K.
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Barkaoui, K.
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Gillon, M.
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Jehin, E.
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Delrez, L.
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Gumundsson, S.
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Dale, H. A.
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Fernandez Lajus, Eduardo Eusebio
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Di Sisto, Romina Paula
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Bretton, M.
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Wunsche, A.
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Hentunen, V. P.
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Shadick, S.
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Jongen, Y.
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Kang, W.
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Kim, T.
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Pakštienė, E.
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Qvam, J. K. T.
dc.date.available
2021-11-03T15:42:08Z
dc.date.issued
2021-05
dc.identifier.citation
Baluev, R. V.; Sokov, E. N.; Sokova, I. A.; Shaidulin, V. Sh.; Veselova, A. V.; et al.; Massive search of spot- and facula-crossing events in 1598 exoplanetary transit lightcurves; Copernicus Foundation Polish Astronomy; Acta Astronomica; 71; 1; 5-2021; 25-53
dc.identifier.issn
0001-5237
dc.identifier.uri
http://hdl.handle.net/11336/145824
dc.description.abstract
We developed a dedicated statistical test for a massive detection of spot- A nd facula-crossing anomalies in multiple exoplanetary transit light curves, based on the frequentist p-value thresholding. This test was used to augment our algorithmic pipeline for transit light curves analysis. It was applied to 1598 amateur and professional transit observations of 26 targets being monitored in the EXPANSION project. We detected 109 statistically significant candidate events revealing a roughly 2 : 1 asymmetry in favor of spots-crossings over faculae-crossings. Although some candidate anomalies likely appear non-physical and originate from systematic errors, such asymmetry between negative and positive events should indicate a physical difference between the frequency of star spots and faculae. Detected spot-crossing events also reveal positive correlation between their amplitude and width, possibly due to spot size correlation. However, the frequency of all detectable crossing events appears just about a few per cent, so they cannot explain excessive transit timing noise observed for several targets.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Copernicus Foundation Polish Astronomy
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
PLANETARY SYSTEMS
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TECHNIQUES: PHOTOMETRIC
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STARSPOTS
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Massive search of spot- and facula-crossing events in 1598 exoplanetary transit lightcurves
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-07-01T14:24:39Z
dc.journal.volume
71
dc.journal.number
1
dc.journal.pagination
25-53
dc.journal.pais
Polonia
dc.journal.ciudad
Varsovia
dc.description.fil
Fil: Baluev, R. V.. Saint Petersburg State University; Rusia
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Fil: Sokov, E. N.. Saint Petersburg State University; Rusia. Russian Academy of Sciences. Central Astronomical Observatory at Pulkovo; Rusia
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Fil: Sokova, I. A.. Saint Petersburg State University; Rusia. Russian Academy of Sciences. Central Astronomical Observatory at Pulkovo; Rusia
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Fil: Shaidulin, V. Sh.. Saint Petersburg State University; Rusia
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Fil: Veselova, A. V.. Saint Petersburg State University; Rusia
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Fil: Aitov, V. N.. Russian Academy of Sciences. Special Astrophysical Observatory; Rusia
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Fil: Mitiani, G. Sh.. Russian Academy of Sciences. Special Astrophysical Observatory; Rusia
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Fil: Valeev, A. F.. Russian Academy of Sciences. Special Astrophysical Observatory; Rusia. Russian Academy of Sciences. Crimean Astrophysical Observatory; Rusia
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Fil: Gadelshin, D.R.. Russian Academy of Sciences. Special Astrophysical Observatory; Rusia
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Fil: Gutaev, A. G.. Russian Academy of Sciences. Special Astrophysical Observatory; Rusia. KazanFederal University (Volga Region); Rusia
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Fil: Beskin, G.M.. Russian Academy of Sciences. Special Astrophysical Observatory; Rusia. KazanFederal University (Volga Region); Rusia
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Fil: Valyavin, G. G.. Russian Academy of Sciences. Special Astrophysical Observatory; Rusia. Russian Academy of Sciences. Crimean Astrophysical Observatory; Rusia. Saint Petersburg State University; Rusia
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Fil: Antonyuk, K.. Russian Academy of Sciences. Crimean Astrophysical Observatory; Rusia
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Fil: Barkaoui, K.. Université de Liège; Bélgica. Cadi Ayyad University; Marruecos
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Fil: Gillon, M.. Université de Liège; Bélgica
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Fil: Jehin, E.. Université de Liège; Bélgica
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Fil: Delrez, L.. Université de Liège; Bélgica
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Fil: Gumundsson, S.. Nes Observatory; Islandia
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Fil: Dale, H. A.. University of Emory; Estados Unidos
dc.description.fil
Fil: Fernandez Lajus, Eduardo Eusebio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
dc.description.fil
Fil: Di Sisto, Romina Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
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Fil: Bretton, M.. Baronnies Provençales Observatory; Francia
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Fil: Wunsche, A.. Baronnies Provençales Observatory; Francia
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Fil: Hentunen, V. P.. Taurus Hill Observatory; Finlandia
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Fil: Shadick, S.. University of Saskatchewan; Canadá
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Fil: Jongen, Y.. Observatoire de Vaison la Romaine; Francia
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Fil: Kang, W.. National Youth Space Center; Corea del Sur
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Fil: Kim, T.. National Youth Space Center; Corea del Sur. Chungbuk National University; Corea del Sur
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Fil: Pakštienė, E.. Vilnius University; Lituania
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Fil: Qvam, J. K. T.. Horten Videregående Skole; Noruega
dc.journal.title
Acta Astronomica
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.32023/0001-5237/71.1.2
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://acta.astrouw.edu.pl/Vol71/n1/a_71_1_2.html
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