TYC 3637-1152-1-A high amplitude delta Scuti star with peculiar pulsational properties

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F19%3A00109347" target="_blank" >RIV/00216224:14310/19:00109347 - isvavai.cz</a>
Result on the web
<a href="https://www.groundai.com/project/tyc-3637-1152-1-a-high-amplitude-delta-scuti-star-with-peculiar-pulsational-properties/1" target="_blank" >https://www.groundai.com/project/tyc-3637-1152-1-a-high-amplitude-delta-scuti-star-with-peculiar-pulsational-properties/1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.newast.2018.10.001" target="_blank" >10.1016/j.newast.2018.10.001</a>

Result language
angličtina
Original language name
TYC 3637-1152-1-A high amplitude delta Scuti star with peculiar pulsational properties
Original language description
In some delta Scuti stars, only one or two radial modes are excited (usually the fundamental mode and/or first overtone mode) and the observed peak-to-peak amplitudes exceed 0.3 mag (V). These stars are known as High Amplitude Delta Scuti (HADS) variables. We here present a detailed photometric and spectroscopic analysis of the HADS star TYC 3637-1152-1. We have derived a metallicity close to solar, a spectral type of F4 V and an age of log t = 9.1. Employing archival time series data from different sources, two frequencies f(0) = 10.034 c/d and f(1) = 12.681 c/d and their harmonics and linear combinations were identified. The period ratio of f(0)/f(1), = 0.791 puts this star into a peculiar position in the Petersen diagram, from which we conclude that TYC 3637-1152-1 is a unique object with peculiar pulsational properties that indicate a transitional state between HADS stars pulsating in the fundamental and first overtone modes and stars pulsating in higher overtones.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
<a href="/en/project/7AMB17AT030" target="_blank" >7AMB17AT030: The analysis of spotted stars using high precision data</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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