J 2024

Apparent non-variable stars from the Kepler mission

PAUNZEN, Ernst, F. BINDER, A. CYNIBURK, M. N. DUFFEK, F. HABERHAUER et. al.

Základní údaje

Originální název

Apparent non-variable stars from the Kepler mission

Autoři

PAUNZEN, Ernst (40 Rakousko, domácí), 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 a I. WIZANI

Vydání

Astronomy and Astrophysics, EDP Sciences, 2024, 0004-6361

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Francie

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 6.500 v roce 2022

Organizační jednotka

Přírodovědecká fakulta

UT WoS

001270377500012

Klíčová slova anglicky

methods: data analysis; catalogs; Hertzsprung-Russell and C-M diagrams; supernovae: general

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 7. 8. 2024 13:26, Mgr. Marie Šípková, DiS.

Anotace

V originále

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).