Massive Search for Spot- and Facula-Crossing Events in 1598 Exoplanetary Transit Light Curves

• Autorzy: Baluev R. V. , Sokov E. N. , Sokova I. A. , Shaidulin V. Sh. , Veselova A. V. , Aitov V. N. , Mitiani G. Sh. , Valeev A. F. , Gadelshin D. R. , Gutaev A. G. , Beskin G. M. , Valyavin G. G. , Antonyuk K. , Barkaoui K. , Gillon M. , Jehin E. , Delrez L. , Guðmundsson S. , Dale H. A. , Fernández-Lajús E. , Di Sisto R. P. , 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. , Garlitz J. , Esseiva N. , Ogmen Y. , Bosch-Cabot P. , Selezneva A. , Hinse T. C.

Identyfikatory

DOI

10.32023/0001-5237/71.1.2

• Języki publikacji: EN

Abstrakty

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.

Słowa kluczowe

EN

planetary systems; techniques: photometric; starspots

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2021
• Tom: Vol. 71, No. 1
• Strony: 25--53
• Opis fizyczny: Bibliogr. 103 poz., rys., tab.

Twórcy

autor

Baluev R. V.

• Saint Petersburg State University, 7–9 Universitetskaya Emb., St Petersburg 199034, Russia

autor

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

autor

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

autor

Shaidulin V. Sh.

• Saint Petersburg State University, 7–9 Universitetskaya Emb., St Petersburg 199034, Russia

autor

Veselova A. V.

• Saint Petersburg State University, 7–9 Universitetskaya Emb., St Petersburg 199034, Russia

autor

Aitov V. N.

• Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Russia

autor

Mitiani G. Sh.

• Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Russia

autor

Valeev A. F.

• Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Russia
• Crimean Astrophysical Observatory, Russian Academy of Sciences, Nauchny, 298409, Russia

autor

Gadelshin D. R.

• Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Russia

autor

Gutaev A. G.

• Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Russia
• Kazan (Volga Region) Federal University, Kazan, 420008, Russia

autor

Beskin G. M.

• Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Russia
• Kazan (Volga Region) Federal University, Kazan, 420008, Russia

autor

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

autor

Antonyuk K.

• Crimean Astrophysical Observatory, Russian Academy of Sciences, Nauchny, 298409, Russia

autor

Barkaoui K.

• Astrobiology Research Unit, Université de Liège, Alleé du 6 Août 19C, B-4000 Liège, Belgium
• Oukaimeden Observatory, High Energy Physics and Astrophysics Laboratory, Cadi Ayyad University, Marrakech, Morocco

autor

Gillon M.

• Astrobiology Research Unit, Université de Liège, Alleé du 6 Août 19C, B-4000 Liège, Belgium

autor

Jehin E.

• Space Sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Allée du 6 Août 19C, B-4000 Liège, Belgium

autor

Delrez L.

• Astrobiology Research Unit, Université de Liège, Alleé du 6 Août 19C, B-4000 Liège, Belgium
• Space Sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Allée du 6 Août 19C, B-4000 Liège, Belgium

autor

Guðmundsson S.

• Nes Observatory, Hraunholl 5, 781 Hornafjörður, Southeast Iceland

autor

Dale H. A.

• Emory University Department of Physics, 400 Dowman Drive, Suite N201, Atlanta, GA 30322, USA

autor

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

autor

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

autor

Bretton M.

• Baronnies Provençales Observatory, Hautes Alpes - Parc Naturel Régional des Baronnies Provençales, F-05150 Moydans, France

autor

Wunsche A.

• Baronnies Provençales Observatory, Hautes Alpes - Parc Naturel Régional des Baronnies Provençales, F-05150 Moydans, France

autor

Hentunen V.-P.

• Taurus Hill Observatory, Warkauden Kassiopeia ry., Härkämäentie 88, 79480 Kangaslampi, Finland

autor

Shadick S.

• Physics and Engineering Physics Department, University of Saskatchewan, 116 Science Place, Saskatoon, Saskatchewan, S7N 5E2, Canada

autor

Jongen Y.

• Observatoire de Vaison la Romaine, 1075 RD 51, Le Palis, 84110 Vaison-la-Romaine, France

autor

Kang W.

• National Youth Space Center, Goheung, Jeollanam-do, 59567, South Korea

autor

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

autor

Pakštienė E.

• Institute of Theoretical Physics and Astronomy, Vilnius University, Sauletekio al. 3, Vilnius 10257, Lithuania

autor

Qvam J. K. T.

• Horten Videregående Skole, Strandpromenaden 33, 3183 Horten, Norway

autor

Knight C. R.

• Ngileah Observatory, 144 Kilkern Road, RD 1. Bulls 4894, New Zealand

autor

Guerra P.

• Observatori Astronňmic Albanyŕ, Camí de Bassegoda s/n, 17733 Albanyŕ, Spain

autor

Marchini A.

• Astronomical Observatory, DSFTA - University of Siena, Via Roma 56, 53100 – Siena, Italy

autor

Salvaggio F.

• Astronomical Observatory, DSFTA - University of Siena, Via Roma 56, 53100 – Siena, Italy

autor

Papini R.

• Astronomical Observatory, DSFTA - University of Siena, Via Roma 56, 53100 – Siena, Italy

autor

Evans P.

• El Sauce Observatory, Coquimbo Province, Chile

autor

Salisbury M.

• School of Physical Sciences, The Open University, Milton Keynes, MK7 6AA, UK

autor

Garlitz J.

• AAVSO, Private Observatory, Elgin, OR 97827, USA

autor

Esseiva N.

• Observatory Saint Martin, code k27, Amathay Vesigneux, France

autor

Ogmen Y.

• Green Island Observatory, Code B34, Gecitkale, Famagusta, North Cyprus

autor

Bosch-Cabot P.

• Observatori Astronòmic Albanyà, 17733 Albanyà, Girona, Spain

autor

Selezneva A.

• Observatori Astronòmic Albanyà, 17733 Albanyà, Girona, Spain

autor

Hinse T. C.

• Institute of Astronomy, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, 87-100 Toruń, Poland
• Chungnam National University, Department of Astronomy, Space Science and Geology, Daejeon, South Korea

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)