The nature of light variations in magnetic hot stars

J 2018

The nature of light variations in magnetic hot stars

KRTIČKA, Jiří; L. HUANG; Miroslav JAGELKA; T. LUFTINGER; Zdeněk MIKULÁŠEK et. al.

Základní údaje

Originální název

The nature of light variations in magnetic hot stars

Autoři

KRTIČKA, Jiří; L. HUANG; Miroslav JAGELKA; T. LUFTINGER; Zdeněk MIKULÁŠEK; E. NIEMCZURA; Milan PRVÁK; J. SILVESTER a G. WADE

Vydání

Contributions of the Astronomical Observatory Skalnaté Pleso, TATRANSKA LOMINICA, The Institute, 2018, 1335-1842

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Slovensko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 0.833

Kód RIV

RIV/00216224:14310/18:00101471

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000432791300023

EID Scopus

2-s2.0-85042650258

Klíčová slova anglicky

stars: chemically peculiar; stars: early type; stars: variables; stars: winds outflows; stars: mass-loss

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 23. 4. 2024 12:59, Mgr. Michal Petr

Anotace

V originále

Magnetic stars show several types of light variability which is modulated by the stellar rotation. In chemically peculiar stars, the redistribution of the flux in the surface regions with peculiar chemical composition leads to the light variability with a typical amplitude of the order of hundredths of magnitude. The most efficient processes that cause the flux redistribution are bound-bound (line) transitions of iron and bound-free (ionization) transitions of silicon. This type of light variability typically leads to a complex dependence of the amplitude on the wavelength and shows antiphase light curves in the far ultraviolet and visual regions. In hot magnetic stars, the modulation of the stellar wind by the magnetic field and the wind blanketing cause the light variability with a typical amplitude of the order of millimagnitudes. We predict the light variations in selected magnetic hot stars and compare the simulated light curves with light variations derived from observations.

Návaznosti

GA16-01116S, projekt VaV

Název: Atmosféry a okolohvězdné prostředí magnetických horkých hvězd

Investor: Grantová agentura ČR, Atmosféry a okolohvězdné prostředí magnetických horkých hvězd

Citovat

KRTIČKA, Jiří; L. HUANG; Miroslav JAGELKA; T. LUFTINGER; Zdeněk MIKULÁŠEK; E. NIEMCZURA; Milan PRVÁK; J. SILVESTER a G. WADE. The nature of light variations in magnetic hot stars. Contributions of the Astronomical Observatory Skalnaté Pleso. TATRANSKA LOMINICA: The Institute, 2018, roč. 48, č. 1, s. 170-174. ISSN 1335-1842.

@article{1482081,
   author = {Krtička, Jiří and Huang, L. and Jagelka, Miroslav and Luftinger, T. and Mikulášek, Zdeněk and Niemczura, E. and Prvák, Milan and Silvester, J. and Wade, G.},
   article_location = {TATRANSKA LOMINICA},
   article_number = {1},
   keywords = {stars: chemically peculiar; stars: early type; stars: variables; stars: winds outflows; stars: mass-loss},
   language = {eng},
   issn = {1335-1842},
   journal = {Contributions of the Astronomical Observatory Skalnaté Pleso},
   title = {The nature of light variations in magnetic hot stars},
   url = {http://adsabs.harvard.edu/abs/2018CoSka..48..170K},
   volume = {48},
   year = {2018}
}

TY  - JOUR
ID  - 1482081
AU  - Krtička, Jiří - Huang, L. - Jagelka, Miroslav - Luftinger, T. - Mikulášek, Zdeněk - Niemczura, E. - Prvák, Milan - Silvester, J. - Wade, G.
PY  - 2018
TI  - The nature of light variations in magnetic hot stars
JF  - Contributions of the Astronomical Observatory Skalnaté Pleso
VL  - 48
IS  - 1
SP  - 170-174
EP  - 170-174
PB  - The Institute
SN  - 13351842
KW  - stars: chemically peculiar
KW  - stars: early type
KW  - stars: variables
KW  - stars: winds outflows
KW  - stars: mass-loss
UR  - http://adsabs.harvard.edu/abs/2018CoSka..48..170K
N2  - Magnetic stars show several types of light variability which is modulated by the stellar rotation. In chemically peculiar stars, the redistribution of the flux in the surface regions with peculiar chemical composition leads to the light variability with a typical amplitude of the order of hundredths of magnitude. The most efficient processes that cause the flux redistribution are bound-bound (line) transitions of iron and bound-free (ionization) transitions of silicon. This type of light variability typically leads to a complex dependence of the amplitude on the wavelength and shows antiphase light curves in the far ultraviolet and visual regions. In hot magnetic stars, the modulation of the stellar wind by the magnetic field and the wind blanketing cause the light variability with a typical amplitude of the order of millimagnitudes. We predict the light variations in selected magnetic hot stars and compare the simulated light curves with light variations derived from observations.
ER  -

KRTIČKA, Jiří; L. HUANG; Miroslav JAGELKA; T. LUFTINGER; Zdeněk MIKULÁŠEK; E. NIEMCZURA; Milan PRVÁK; J. SILVESTER a G. WADE. The nature of light variations in magnetic hot stars. \textit{Contributions of the Astronomical Observatory Skalnaté Pleso}. TATRANSKA LOMINICA: The Institute, 2018, roč.~48, č.~1, s.~170-174. ISSN~1335-1842.

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