Study of Slowly Rotating CP Stars Observed with TESS

D 2020

Study of Slowly Rotating CP Stars Observed with TESS

KOBZAR, O.; V. KHALACK; D. BOHLENDER; A. DAVID-URAZ; P. KASHKO et al.

Základní údaje

Originální název

Study of Slowly Rotating CP Stars Observed with TESS

Autoři

KOBZAR, O.; V. KHALACK; D. BOHLENDER; A. DAVID-URAZ; P. KASHKO; D. M. BOWMAN; C. LOVEKIN; D. TVARDOVSKYI; M. PERRON-CORMIER; Ernst PAUNZEN; J. SIKORA; P. LAMPENS a O. RICHARD

Vydání

Warszawa, Proceedings of the Polish Astronomical Society, Vol. 11, od s. 214-218, 5 s. 2020

Nakladatel

Polskie Towarzystwo Astronomiczne

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10308 Astronomy

Stát vydavatele

Polsko

Utajení

není předmětem státního či obchodního tajemství

Forma vydání

elektronická verze "online"

Odkazy

URL

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/20:00118440

Organizační jednotka

Přírodovědecká fakulta

ISBN

978-83-950430-9-3

ISSN

Klíčová slova anglicky

stars: chemically peculiar; stars: individual; stars: oscillations; stars: magnetic fields; stars: variables

Štítky

14312040, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 29. 3. 2021 18:36, doc. Ernst Paunzen, Dr.rer.nat

Anotace

V originále

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.

Citovat

KOBZAR, O.; V. KHALACK; D. BOHLENDER; A. DAVID-URAZ; P. KASHKO; D. M. BOWMAN; C. LOVEKIN; D. TVARDOVSKYI; M. PERRON-CORMIER; Ernst PAUNZEN; J. SIKORA; P. LAMPENS a O. RICHARD. Study of Slowly Rotating CP Stars Observed with TESS. Online. In Gregg Wade, Evelyne Alecian, David Bohlender, Aaron Sigut. Proceedings of the Polish Astronomical Society, Vol. 11. Warszawa: Polskie Towarzystwo Astronomiczne, 2020, s. 214-218. ISBN 978-83-950430-9-3.

@inproceedings{1754776,
   author = {Kobzar, O. and Khalack, V. and Bohlender, D. and DavidandUraz, A. and Kashko, P. and Bowman, D. M. and Lovekin, C. and Tvardovskyi, D. and PerronandCormier, M. and Paunzen, Ernst and Sikora, J. and Lampens, P. and Richard, O.},
   address = {Warszawa},
   booktitle = {Proceedings of the Polish Astronomical Society, Vol. 11},
   editor = {Gregg Wade, Evelyne Alecian, David Bohlender, Aaron Sigut},
   keywords = {stars: chemically peculiar; stars: individual; stars: oscillations; stars: magnetic fields; stars: variables},
   howpublished = {elektronická verze "online"},
   language = {eng},
   location = {Warszawa},
   isbn = {978-83-950430-9-3},
   pages = {214-218},
   publisher = {Polskie Towarzystwo Astronomiczne},
   title = {Study of Slowly Rotating CP Stars Observed with TESS},
   url = {https://www.pta.edu.pl/pliki/proc/vol11/v11p214.pdf},
   year = {2020}
}

TY  - CONF
ID  - 1754776
AU  - Kobzar, O. - Khalack, V. - Bohlender, D. - David-Uraz, A. - Kashko, P. - Bowman, D. M. - Lovekin, C. - Tvardovskyi, D. - Perron-Cormier, M. - Paunzen, Ernst - Sikora, J. - Lampens, P. - Richard, O.
PY  - 2020
TI  - Study of Slowly Rotating CP Stars Observed with TESS
PB  - Polskie Towarzystwo Astronomiczne
CY  - Warszawa
SN  - 9788395043093
KW  - stars: chemically peculiar
KW  - stars: individual
KW  - stars: oscillations
KW  - stars: magnetic fields
KW  - stars: variables
UR  - https://www.pta.edu.pl/pliki/proc/vol11/v11p214.pdf
N2  - 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.
ER  -

KOBZAR, O.; V. KHALACK; D. BOHLENDER; A. DAVID-URAZ; P. KASHKO; D. M. BOWMAN; C. LOVEKIN; D. TVARDOVSKYI; M. PERRON-CORMIER; Ernst PAUNZEN; J. SIKORA; P. LAMPENS a O. RICHARD. Study of Slowly Rotating CP Stars Observed with TESS. Online. In Gregg Wade, Evelyne Alecian, David Bohlender, Aaron Sigut. \textit{Proceedings of the Polish Astronomical Society, Vol. 11}. Warszawa: Polskie Towarzystwo Astronomiczne, 2020, s.~214-218. ISBN~978-83-950430-9-3.

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