织女星光谱中的小尺度变异性

IF 0.5 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Kinematics and Physics of Celestial Bodies Pub Date : 2025-05-13 DOI:10.3103/S0884591325030031

S. M. Pokhvala, B. E. Zhilyaev

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引用次数: 0

摘要

本文介绍了织女星大气中氢巴尔默谱线的小尺度变化的观测结果。光谱观测是用安装在乌克兰国家科学院主天文台的低分辨率光谱仪（R ~ 600）进行的。光谱以二阶时间分辨率获得。在氢谱线Hβ、Hγ、Hδ中检测到变异性，可以解释为非径向脉动。观测到的变化特征时间范围为300 ~ 1200s。振荡元件的水平尺度约为800毫米，与太阳半径相当。变化的径向速度约为36公里/秒。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Small-Scale Variability in the Spectrum of Vega

The results of observations of small-scale variations in the hydrogen Balmer lines in the atmosphere of Vega are presented. The spectral observations are performed with a low-resolution spectrograph (R ~ 600) installed in the Main Astronomical Observatory of the National Academy of Sciences of Ukraine. The spectra are obtained with a second-order time resolution. Variability has been detected in the hydrogen lines H_β, H_γ, H_δ, which can be interpreted as nonradial pulsations. The characteristic time of the observed variations ranges from 300 to 1200 s. The horizontal scale of the oscillating elements is approximately 800 mm, which is comparable to the solar radius. The radial velocity of the variations is approximately 36 km/s.

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来源期刊

Kinematics and Physics of Celestial Bodies ASTRONOMY & ASTROPHYSICS-

CiteScore

0.90

自引率

40.00%

发文量

审稿时长

>12 weeks

期刊介绍： Kinematics and Physics of Celestial Bodies is an international peer reviewed journal that publishes original regular and review papers on positional and theoretical astronomy, Earth’s rotation and geodynamics, dynamics and physics of bodies of the Solar System, solar physics, physics of stars and interstellar medium, structure and dynamics of the Galaxy, extragalactic astronomy, atmospheric optics and astronomical climate, instruments and devices, and mathematical processing of astronomical information. The journal welcomes manuscripts from all countries in the English or Russian language.