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A planet orbiting an sdB star and an M dwarf in 2M 1938+4603
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dc.type
JournalArticle
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dc.abstract.en
We present a preliminary analysis of the 2M 1938+4603 star. It is an eclipsing binary system consisting of a primary sdB component and a secondary M dwarf. The photometric data are dominated by mutual eclipses and a very strong reflection effect. The primary has a fairly rich pulsation spectrum which can be used to study its interior. On the other hand, the pulsations affect the binary trend and vice versa what makes the analysis very difficult. Therefore, we attempted at proper modeling of the light variation due to eclipses and reflection and their removal from the data so it does not affect the Fourier analysis of stellar pulsations. We focus on mid-times of over 16 000 primary and secondary minima, which were used to verify stability of the orbital period. The O-C diagram indicates possible parabolic and sinusoidal variations, commonly explained by period changes caused by evolution and a presence of a third body, respectively.
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dc.description.volume
101
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dc.description.publication
0,3
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dc.description.conftype
international
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dc.identifier.doi
10.1051/epjconf/201510106010
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dc.identifier.eissn
2100-014X
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dc.title.journal
EPJ Web of Conferences
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dc.title.volume
The Space Photometry Revolution – CoRoT Symposium 3, Kepler KASC-7 Joint Meeting
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dc.language.container
eng
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dc.affiliation
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomiczne
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dc.subtype
ConferenceProceedings
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dc.conference
The Space Photometry Revolution – CoRoT Symposium 3, Kepler KASC-7 Joint Meeting; 2014-07-06; 2014-07-11; Tuluza; Francja; indeksowana w Web of Science; indeksowana w Scopus; SAO/NASA ADS Astronomy Abstract Service;
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dc.identifier.articleid
06010
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dc.rights.original
CC-BY; otwarte czasopismo; ostateczna wersja wydawcy; w momencie opublikowania; 0;