Study of Slowly Rotating CP Stars Observed with TESS

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F20%3A00118440" target="_blank" >RIV/00216224:14310/20:00118440 - isvavai.cz</a>
Result on the web
<a href="https://www.pta.edu.pl/pliki/proc/vol11/v11p214.pdf" target="_blank" >https://www.pta.edu.pl/pliki/proc/vol11/v11p214.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Study of Slowly Rotating CP Stars Observed with TESS
Original language description
Since the end of 2018, the Transiting Exoplanet Survey Satellite (TESS) provides high-quality space data on stellar photometry to the astronomical community. We present the results of an analysis of TESS photometric data for known slowly rotating, magnetic, chemically peculiar (mCP) stars. In general, mCP stars show an inhomogeneous distribution of elements in their stellar atmospheres that leads to spectroscopic (line profile) and photometric (light curve) variations over the rotation period. In the frame of the oblique magnetic rotator (OMR) model, patches of enhanced chemical abundance on the stellar surface reveal the frequency of stellar rotation. Using this approach, we have compiled a list of slowly rotating mCP stars with rotation periods longer than two days from the analysis of the photometric data provided by TESS for the first eight sectors of observations. Slowly rotating mCP stars usually possess a hydrodynamically stable stellar atmosphere where a magnetic field can amplify the process of atomic diffusion and this leads to the horizontal and vertical stratification of chemical abundances.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the Polish Astronomical Society, Vol. 11
ISBN
9788395043093
ISSN
2545-1022
e-ISSN
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Number of pages
5
Pages from-to
214-218
Publisher name
Polskie Towarzystwo Astronomiczne
Place of publication
Warszawa
Event location
London (Canada)
Event date
Jul 8, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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