Discovery of the first Ap star in an eclipsing binary system

D 2020

Discovery of the first Ap star in an eclipsing binary system

SKARKA, Marek; Petr KABÁTH; Ernst PAUNZEN; M MAŠEK; Jiří ŽÁK et. al.

Základní údaje

Originální název

Discovery of the first Ap star in an eclipsing binary system

Autoři

SKARKA, Marek; Petr KABÁTH; Ernst PAUNZEN; M MAŠEK; Jiří ŽÁK a Jan JANÍK

Vydání

Vienna, Stars and their Variability Observed from Space, od s. 175-176, 2 s. 2020

Nakladatel

University of Vienna

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10308 Astronomy

Stát vydavatele

Rakousko

Utajení

není předmětem státního či obchodního tajemství

Forma vydání

elektronická verze "online"

Odkazy

URL

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Stars: chemically peculiar; inidividual: HD 99458; binaries: eclipsing

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 17. 12. 2020 10:30, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

We report the discovery of a very special object, the first star of its kind. HD 99458 appeared to be a chemically peculiar star of Ap type, showing overabundances of Si, Ti and other heavy elements which are concentrated into spots. The spots produce rotational modulation of light variations. In addition, the star shows pulsations of a δ Scuti type, which has never before been reported in Ap stars. The star is in a binary system with a red-dwarf companion, which is also very rare among magnetic chemically-peculiar stars. In this paper we discuss new observations and results concerning the pulsation period and chemical peculiarity of this object.

Návaznosti

EF16_027/0008360, projekt VaV

Název: Postdoc@MUNI

Citovat

SKARKA, Marek; Petr KABÁTH; Ernst PAUNZEN; M MAŠEK; Jiří ŽÁK a Jan JANÍK. Discovery of the first Ap star in an eclipsing binary system. Online. In C. Neiner, W. W. Weiss, D. Baade, R. E. Griffin, C. C. Lovekin, A. F. J. Moffat. Stars and their Variability Observed from Space. Vienna: University of Vienna, 2020, s. 175-176.

@inproceedings{1711376,
   author = {Skarka, Marek and Kabáth, Petr and Paunzen, Ernst and Mašek, M and Žák, Jiří and Janík, Jan},
   address = {Vienna},
   booktitle = {Stars and their Variability Observed from Space},
   editor = {C. Neiner, W. W. Weiss, D. Baade, R. E. Griffin, C. C. Lovekin, A. F. J. Moffat},
   keywords = {Stars: chemically peculiar; inidividual: HD 99458; binaries: eclipsing},
   howpublished = {elektronická verze "online"},
   language = {eng},
   location = {Vienna},
   pages = {175-176},
   publisher = {University of Vienna},
   title = {Discovery of the first Ap star in an eclipsing binary system},
   url = {https://starsandspace.univie.ac.at/fileadmin/user_upload/p_stars/Proceedings/2020starsconf..0175S.pdf},
   year = {2020}
}

TY  - CONF
ID  - 1711376
AU  - Skarka, Marek - Kabáth, Petr - Paunzen, Ernst - Mašek, M - Žák, Jiří - Janík, Jan
PY  - 2020
TI  - Discovery of the first Ap star in an eclipsing binary system
PB  - University of Vienna
CY  - Vienna
KW  - Stars: chemically peculiar
KW  - inidividual: HD 99458
KW  - binaries: eclipsing
UR  - https://starsandspace.univie.ac.at/fileadmin/user_upload/p_stars/Proceedings/2020starsconf..0175S.pdf
L2  - https://starsandspace.univie.ac.at/fileadmin/user_upload/p_stars/Proceedings/2020starsconf..0175S.pdf
N2  - We report the discovery of a very special object, the first star of its kind. HD 99458 appeared to be a chemically peculiar star of Ap type, showing overabundances of Si, Ti and other heavy elements which are concentrated into spots. The spots produce rotational modulation of light variations. In addition, the star shows pulsations of a δ Scuti type, which has never before been reported in Ap stars. The star is in a binary system with a red-dwarf companion, which is also very rare among magnetic chemically-peculiar stars. In this paper we discuss new observations and results concerning the pulsation period and chemical peculiarity of this object.
ER  -

SKARKA, Marek; Petr KABÁTH; Ernst PAUNZEN; M MAŠEK; Jiří ŽÁK a Jan JANÍK. Discovery of the first Ap star in an eclipsing binary system. Online. In C. Neiner, W. W. Weiss, D. Baade, R. E. Griffin, C. C. Lovekin, A. F. J. Moffat. \textit{Stars and their Variability Observed from Space}. Vienna: University of Vienna, 2020, s.~175-176.

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