2019-2022年异步极地IGR J19552+0044的光度研究

IF 0.6 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Astrophysics Pub Date : 2024-07-31 DOI:10.1007/s10511-024-09825-2

Ju. V. Babina, E. P. Pavlenko, N. V. Pit, K. A. Antonyuk, A. A. Sosnovskij, V. G. Godunova, I. A. Izviekova, G. I. Kokhirova, F. D. Rakhmatullaeva, A. O. Simon, M. V. Chupira

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引用次数: 0

摘要

本文分析了克里米亚天体物理观测台以及Terskol Peak、Sanglokh和Lesniki观测台在2019-2022年59个夜晚对异步极地IGR J19552+0044进行的多色光度观测数据，以及TESS空间望远镜在2022年27天获得的数据。结果表明，在 Ic 波段观测到了白矮星自转周期（~2m.5-3m）亮度振荡的最大振幅，而在 B 波段则基本接近于零。白矮星的自转周期被细化为 0.05645350(14)天。探测到自转周期亮度曲线的振幅与同步周期的相位有关。

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Photometric Study of the Asynchronous Polar IGR J19552+0044 in 2019-2022

This paper is an analysis of data from multicolor photometric observations of the asynchronous polar IGR J19552+0044 obtained over 59 nights from 2019-2022 at the Crimean Astrophysical Observatory, as well as at the Terskol Peak, Sanglokh, and Lesniki Observatories, and data from the TESS space telescope obtained on 27 days in 2022. It is shown that the maximum amplitude of the brightness oscillations at the rotation period of the white dwarf (~2^m.5-3^m) is observed in the Ic band and is essentially close to zero in the B band. The rotation period of the white dwarf is refined to 0.05645350(14) days. A dependence of the amplitude of the brightness curve of the rotation period on the phase of the synodic period is detected.

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来源期刊

Astrophysics 地学天文-天文与天体物理

CiteScore

0.90

自引率

20.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Astrophysics (Ap) is a peer-reviewed scientific journal which publishes research in theoretical and observational astrophysics. Founded by V.A.Ambartsumian in 1965 Astrophysics is one of the international astronomy journals. The journal covers space astrophysics, stellar and galactic evolution, solar physics, stellar and planetary atmospheres, interstellar matter. Additional subjects include chemical composition and internal structure of stars, quasars and pulsars, developments in modern cosmology and radiative transfer.