Light Curves and Frequency Analysis of Hybrid δSct-γ Dor Stars

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F22%3A00576368" target="_blank" >RIV/67985815:_____/22:00576368 - isvavai.cz</a>

Result on the web

<a href="https://hdl.handle.net/11104/0345939" target="_blank" >https://hdl.handle.net/11104/0345939</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Light Curves and Frequency Analysis of Hybrid δSct-γ Dor Stars

Original language description

Space observations have greatly improved our knowledge of stellar oscillations since they allowed us to discover many oscillation frequencies with small amplitudes that used to be hidden from the ground observations. One of the interesting phenomena revealed was a large number of hybrid δ Sct-γ Dor stars discovered. These objects are low-mass main sequence stars oscillating in radial and non-radial pressure (p) and gravity (g) modes. Thes simultaneous presence of p- and g- modes in these stars makes them excellent targets for asteroseismology since these modes together allow to probe both the external and near-to-core layers of the stars. Nevertheless, their location at the Hertzsprung-Russel diagram indicates they might have surface activity (spots) hindering the correct classification of oscillation modes in the frequency spectrum, especially at low-frequency ranges. Additionally, these objects might be in binary systems, which makes mode classification, and thus the explanation of the origin of their light curve variability, an even more complex task. In this work, we present a frequency analysis of the hybrid δSct-γ Dor star CoRoT-102314644 and summarize the difficulties that arise when classifying the origin of the light curve variations in this type of objects.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Astronomical Journal of Azerbaijan

ISSN

2078-4163

e-ISSN

2078-4171

Volume of the periodical

17

Issue of the periodical within the volume

2

Country of publishing house

AZ - AZERBAIJAN

Number of pages

9

Pages from-to

100-108

UT code for WoS article

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EID of the result in the Scopus database

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