PAUNZEN, Ernst, F. BINDER, A. CYNIBURK, M. N. DUFFEK, F. HABERHAUER, C. HEINREICHSBERGER, H. KOHLHOFER, L. KUESS, H. M. MAITZEN, T. SAALMANN, A. M. SCHANZ, S. SCHAUER, K. SCHMIDT, A. TOKAREVA and I. WIZANI. Apparent non-variable stars from the Kepler mission. Astronomy and Astrophysics. EDP Sciences, 2024, vol. 687, July 2024, p. 1-7. ISSN 0004-6361. Available from: https://dx.doi.org/10.1051/0004-6361/202244572.
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Basic information
Original name Apparent non-variable stars from the Kepler mission
Authors PAUNZEN, Ernst (40 Austria, belonging to the institution), F. BINDER, A. CYNIBURK, M. N. DUFFEK, F. HABERHAUER, C. HEINREICHSBERGER, H. KOHLHOFER, L. KUESS, H. M. MAITZEN, T. SAALMANN, A. M. SCHANZ, S. SCHAUER, K. SCHMIDT, A. TOKAREVA and I. WIZANI.
Edition Astronomy and Astrophysics, EDP Sciences, 2024, 0004-6361.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher France
Confidentiality degree is not subject to a state or trade secret
WWW URL URL
Impact factor Impact factor: 6.500 in 2022
Organization unit Faculty of Science
Doi http://dx.doi.org/10.1051/0004-6361/202244572
UT WoS 001270377500012
Keywords in English methods: data analysis; catalogs; Hertzsprung-Russell and C-M diagrams; supernovae: general
Tags rivok
Tags International impact, Reviewed
Changed by Changed by: Mgr. Marie Šípková, DiS., učo 437722. Changed: 7/8/2024 13:26.
Abstract
Context. The analysis of non-variable stars is generally neglected in the literature. However, such objects are needed for many calibration processes and for testing pulsational models. The photometric time series of the Kepler satellite mission still stand as the most accurate data available today and are excellently suited to the search for non-variable stars. Aims. We analysed all long-cadence light curves for stars not reported as a variable so far from the Kepler satellite mission. Using the known characteristics and flaws of these data sets, we defined three different frequency ranges where we searched for non-variability. Methods. We used the Lomb–Scargle periodogram and the false-alarm probability (FAP) to analyse the cleaned data sets of 138 451 light curves. We then used log FAP ≥ −2 to define a star as ‘non-variable’ in the ranges below 0.1 c/d, 0.1 to 2.0 c/d, and 2.0 to 25.0 c/d, respectively. Furthermore, we also calculated the standard deviation of the mean light curve to obtain another parameter. Results. In total, we found 14 154 stars that fulfil the set criteria. These objects are mostly cooler than the 7000 K populating the whole main sequence (MS) to the red giant branch (RGB).
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