Reference : Massive Search for Spot- and Facula-Crossing Events in 1598 Exoplanetary Transit Ligh...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/260562
Massive Search for Spot- and Facula-Crossing Events in 1598 Exoplanetary Transit Light Curves
English
Baluev, R. V. [Saint Petersburg State University, 7-9 Universitetskaya Emb., St Petersburg 199034, Russia]
Sokov, E. N. [Central Astronomical Observatory at Pulkovo of Russian Academy of Sciences, Pulkovskoje sh. 65/1, St Petersburg 196140, Russia, Saint Petersburg State University, 7-9 Universitetskaya Emb., St Petersburg 199034, Russia]
Sokova, I. A. [Central Astronomical Observatory at Pulkovo of Russian Academy of Sciences, Pulkovskoje sh. 65/1, St Petersburg 196140, Russia, Saint Petersburg State University, 7-9 Universitetskaya Emb., St Petersburg 199034, Russia]
Shaidulin, V. Sh [Saint Petersburg State University, 7-9 Universitetskaya Emb., St Petersburg 199034, Russia]
Veselova, A. V. [Saint Petersburg State University, 7-9 Universitetskaya Emb., St Petersburg 199034, Russia]
Aitov, V. N. [Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Russia]
Mitiani, G. Sh [Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Russia]
Valeev, A. F. [Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Russia, Crimean Astrophysical Observatory, Russian Academy of Sciences, Nauchny, 298409, Russia]
Gadelshin, D. R. [Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Russia]
Gutaev, A. G. [Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Russia, Kazan (Volga Region) Federal University, Kazan, 420008, Russia]
Beskin, G. M. [Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Russia, Kazan (Volga Region) Federal University, Kazan, 420008, Russia]
Valyavin, G. G. [Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Russia, Crimean Astrophysical Observatory, Russian Academy of Sciences, Nauchny, 298409, Russia, Saint Petersburg State University, 7-9 Universitetskaya Emb., St Petersburg 199034, Russia]
Antonyuk, K. [Crimean Astrophysical Observatory, Russian Academy of Sciences, Nauchny, 298409, Russia]
Barkaoui, Khalid mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Gillon, Michaël mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Jehin, Emmanuel mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Delrez, Laetitia mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Guðmundsson, S. [Nes Observatory, Hraunholl 5, 781 Hornafjörður, Southeast Iceland]
Dale, H. A. [Emory University Department of Physics, 400 Dowman Drive, Suite N201, Atlanta, GA 30322]
Fernández-Lajús, E. [Facultad de Ciencias Astronómicas y Geofísicas - Universidad Nacional de La Plata, Paseo del Bosque S/N - 1900 La Plata, Argentina Instituto de Astrofísica de La Plata CCT La Plata - CONICET/UNLP, Argentina]
Di Sisto, R. P. [Facultad de Ciencias Astronómicas y Geofísicas - Universidad Nacional de La Plata, Paseo del Bosque S/N - 1900 La Plata, Argentina Instituto de Astrofísica de La Plata CCT La Plata - CONICET/UNLP, Argentina]
Bretton, M. [Baronnies Provençales Observatory, Hautes Alpes - Parc Naturel Règional des Baronnies Provençales, F-05150 Moydans, France]
Wunsche, A. [Baronnies Provençales Observatory, Hautes Alpes - Parc Naturel Règional des Baronnies Provençales, F-05150 Moydans, France]
Hentunen, V.-P. [Taurus Hill Observatory, Warkauden Kassiopeia ry., Härkämäentie 88, 79480 Kangaslampi, Finland]
Shadick, S. [Physics and Engineering Physics Department, University of Saskatchewan, 116 Science Place, Saskatoon, Saskatchewan, S7N 5E2, Canada]
Jongen, Y. [Observatoire de Vaison la Romaine, 1075 RD 51, Le Palis, 84110 Vaison-la-Romaine, France]
Kang, W. [National Youth Space Center, Goheung, Jeollanam-do, 59567, South Korea]
Kim, T. [National Youth Space Center, Goheung, Jeollanam-do, 59567, South Korea, Department of Astronomy and Space Science, Chungbuk National University, Cheongju-City, 28644, South Korea]
Pakštienė, E. [Institute of Theoretical Physics and Astronomy, Vilnius University, Sauletekio al. 3, Vilnius 10257, Lithuania]
Qvam, J. K. T. [Horten Videregående Skole, Strandpromenaden 33, 3183 Horten, Norway]
Knight, C. R. [Ngileah Observatory, 144 Kilkern Road, RD 1. Bulls 4894, New Zealand]
Guerra, P. [Observatori Astronómic Albanyà, Camí de Bassegoda s/n, 17733 Albanyà, Spain]
Marchini, A. [Astronomical Observatory, DSFTA - University of Siena, Via Roma 56, 53100 - Siena, Italy]
Salvaggio, F. [Astronomical Observatory, DSFTA - University of Siena, Via Roma 56, 53100 - Siena, Italy]
Papini, R. [Astronomical Observatory, DSFTA - University of Siena, Via Roma 56, 53100 - Siena, Italy]
Evans, P. [El Sauce Observatory, Coquimbo Province, Chile]
Salisbury, M. [School of Physical Sciences, The Open University, Milton Keynes, MK7 6AA, UK]
Garlitz, J. [AAVSO, Private Observatory, Elgin, OR 97827, USA]
Esseiva, N. [Observatory Saint Martin, code k27, Amathay Vesigneux, France]
Ogmen, Y. [Green Island Observatory, Code B34, Gecitkale, Famagusta, North Cyprus]
Bosch-Cabot, P. [Observatori Astronómic Albanyà, 17733 Albanyà, Girona, Spain]
Selezneva and, A. [Observatori Astronómic Albanyà, 17733 Albanyà, Girona, Spain]
Hinse, T. C. [Institute of Astronomy, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziądzka 5, 87-100 Toruń, Poland, Chungnam National University, Department of Astronomy, Space Science and Geology, Daejeon, South Korea)]
1-Mar-2021
Acta Astronomica
Copernicus Foundation for Polish Astronomy
71
25
Yes
International
0001-5237
Poland
[en] Planetary systems - Techniques: photometric - starspots
[en] We developed a dedicated statistical test for a massive detection of spot- and 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.
Professionals
http://hdl.handle.net/2268/260562
10.32023/0001-5237/71.1.2
https://ui.adsabs.harvard.edu/abs/2021AcA....71...25B

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