海尔库利新星 2021 作为中间极地

Contributions of the Astronomical Observatory Skalnaté Pleso Pub Date : 2024-02-01 DOI:10.31577/caosp.2024.54.2.128

P. Dubovský, K. Petrík, V. Breus

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引用次数: 0

摘要

.我们报告了对赫库利新星 2021 - V1674 Her 的观测结果。该天体具有一些特殊的性质。原生星被确定为中极星。外流速度达到 10000 公里/秒-1。亮度下降异常迅速：t 2 ∼ = 1 . 2 d，t 3 ∼ = 3 d。脉冲自旋信号在新星爆发后不久就在光度测量中被探测到了。测量到了白矮星旋转的极速自旋。尽管在周期计数方面存在挑战，我们还是根据三季的观测结果成功地构建了自旋脉冲最大值的O - C图。结果表明，白矮星的自旋加速度比较稳定，预计在未来几十年内会逐渐下降。此外，我们还研究了轨道周期的演变。

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Nova Herculi 2021 as an intermediate polar

. We report the results of observations of Nova Herculi 2021 - V1674 Her. The object is characterized by several exceptional properties. The progenitor was identiﬁed as an intermediate polar. The speed of the outﬂow reached 10000 km s − 1 . The brightness decline was exceptionally rapid: t 2 ∼ = 1 . 2 d , t 3 ∼ = 3 d . The pulse spin signal was detected in photometry soon after the nova eruption. Extremely fast spin-up of the white dwarf rotation was measured. Despite challenges in cycle counting, we successfully constructed the O - C diagram of spin pulse maxima based on three seasons of observations. The result suggests a stable spin acceleration, with an anticipated gradual decline over the next decades. Additionally, we investigated the evolution of the orbital period.

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Contributions of the Astronomical Observatory Skalnaté Pleso

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