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Optical and X-Ray Variability of Gamma Cas Analogs. / Холтыгин, Александр Федорович.

в: Galaxies, Том 13, № 5, 109, 15.09.2025.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

Harvard

Холтыгин, АФ 2025, 'Optical and X-Ray Variability of Gamma Cas Analogs', Galaxies, Том. 13, № 5, 109. https://doi.org/10.3390/galaxies13050109

APA

Холтыгин, А. Ф. (2025). Optical and X-Ray Variability of Gamma Cas Analogs. Galaxies, 13(5), [109]. https://doi.org/10.3390/galaxies13050109

Vancouver

Холтыгин АФ. Optical and X-Ray Variability of Gamma Cas Analogs. Galaxies. 2025 Сент. 15;13(5). 109. https://doi.org/10.3390/galaxies13050109

Author

Холтыгин, Александр Федорович. / Optical and X-Ray Variability of Gamma Cas Analogs. в: Galaxies. 2025 ; Том 13, № 5.

BibTeX

@article{72ff37e5f3474f7aa95b499f2178fdd0,
title = "Optical and X-Ray Variability of Gamma Cas Analogs",
abstract = "γ Cas analogs is an enigmatic group of Be stars with unusually hard X-rays and an X-ray luminosity of 10^{31}–10^{33} erg s−1, which is higher than a typical value for classical Be stars. The evolutionary status of these mysterious objects and the nature of their X-ray emission remains disputable. I suppose that our understanding of this mystery is in the detailed studies of their optical and X-ray variability on the various time scales from very short to very long. In the present paper the optical and X-ray spectral and photometric observations of these stars are reviewed. The contemporary assumptions on the mechanisms of X-rayradiation generation of γ Cas analogs are discussed. It is concluded that the analysis of the binarity of γ Cas analog helps to understand their inexplicable nature.",
keywords = "gamma Cas analog, stars: spectra, stars: line profile variability, stars: X-ray",
author = "Холтыгин, {Александр Федорович}",
year = "2025",
month = sep,
day = "15",
doi = "10.3390/galaxies13050109",
language = "English",
volume = "13",
journal = "Galaxies",
issn = "2075-4434",
publisher = "MDPI AG",
number = "5",

}

RIS

TY - JOUR

T1 - Optical and X-Ray Variability of Gamma Cas Analogs

AU - Холтыгин, Александр Федорович

PY - 2025/9/15

Y1 - 2025/9/15

N2 - γ Cas analogs is an enigmatic group of Be stars with unusually hard X-rays and an X-ray luminosity of 10^{31}–10^{33} erg s−1, which is higher than a typical value for classical Be stars. The evolutionary status of these mysterious objects and the nature of their X-ray emission remains disputable. I suppose that our understanding of this mystery is in the detailed studies of their optical and X-ray variability on the various time scales from very short to very long. In the present paper the optical and X-ray spectral and photometric observations of these stars are reviewed. The contemporary assumptions on the mechanisms of X-rayradiation generation of γ Cas analogs are discussed. It is concluded that the analysis of the binarity of γ Cas analog helps to understand their inexplicable nature.

AB - γ Cas analogs is an enigmatic group of Be stars with unusually hard X-rays and an X-ray luminosity of 10^{31}–10^{33} erg s−1, which is higher than a typical value for classical Be stars. The evolutionary status of these mysterious objects and the nature of their X-ray emission remains disputable. I suppose that our understanding of this mystery is in the detailed studies of their optical and X-ray variability on the various time scales from very short to very long. In the present paper the optical and X-ray spectral and photometric observations of these stars are reviewed. The contemporary assumptions on the mechanisms of X-rayradiation generation of γ Cas analogs are discussed. It is concluded that the analysis of the binarity of γ Cas analog helps to understand their inexplicable nature.

KW - gamma Cas analog

KW - stars: spectra

KW - stars: line profile variability

KW - stars: X-ray

UR - https://www.mendeley.com/catalogue/456da7bf-5a9a-3a42-a55b-00ac76e8a4e9/

U2 - 10.3390/galaxies13050109

DO - 10.3390/galaxies13050109

M3 - Article

VL - 13

JO - Galaxies

JF - Galaxies

SN - 2075-4434

IS - 5

M1 - 109

ER -

ID: 143342591