Spectroscopic and Photometric Study of the New Eclipsing Polar Gaia23cer

IF 1.1 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS
A. I. Kolbin, E. P. Pavlenko, V. Yu. Kochkina, A. S. Vinokurov, S. Yu. Shugarov, A. A. Sosnovskij, K. A. Antonyuk, O. I. Antonyuk, N. V. Pit’, M. V. Suslikov, E. K. Galimova, N. V. Borisov, A. N. Burenkov, O. I. Spiridonova
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引用次数: 0

Abstract

We present the results of our optical study of the eclipsing polar Gaia23cer. We analyze the orbital brightness variability in high (\(\langle r\rangle\approx 16.5^{m}\)) and low (\(\langle r\rangle\approx 19.2^{m}\)) states. The system has an orbital period \(P_{\textrm{orb}}=102.0665\pm 0.0015\) min and exhibits deep eclipses with a duration \(\Delta t_{\textrm{ecl}}=401.30\pm 0.81\) s. The spectra have a red cyclotron continuum with the Zeeman H\(\alpha\) absorption triplet forming in a magnetic field with a strength \(B=15.2\pm 1.1\) MG. The source of emission lines has a high radial velocity semi-amplitude (\(K\approx 450\) km s\({}^{-1}\)), and its eclipse lags behind the eclipse of the white dwarf. The mass \(M_{1}=0.79\pm 0.03\;M_{\odot}\) and temperature \(T=11\,350\pm 650\) K of the white dwarf have been estimated by modelling the spectral energy distribution. The eclipse duration corresponds to a donor mass \(M_{2}=0.10{-}0.13\;M_{\odot}\) and an orbital inclination \(i=84.3^{\circ}{-}87.0^{\circ}\). The donor temperature was estimated to be \(T\approx 2900\) K by modelling the elliptical variability and eclipse depth.

Abstract Image

Abstract Image

新的极地食星 Gaia23cer 的光谱和光度研究
Abstract We present the results of our optical study of the eclipsing polar Gaia23cer.我们分析了高亮(约16.5^{m})和低亮(约19.2^{m})状态下的轨道亮度变化。该系统的轨道周期为 \(P_{textrm{orb}}=102.0665\pm 0.0015\) min,并出现持续时间为 \(\Delta t_{textrm{ecl}}=401.30\pm 0.光谱中有一个红色回旋连续波,在强度为 B=15.2\pm 1.1 MG 的磁场中形成了 Zeeman H\(α\) 吸收三重。发射线源具有很高的半幅径向速度(\(K\approx 450\) km s\({}^{-1}\) ),它的日食滞后于白矮星的日食。白矮星的质量(M_{1}=0.79\pm 0.03\;M_{odot}\)和温度(T=11\,350\pm 650\)K是通过模拟光谱能量分布估算出来的。日食持续时间与供体质量(M_{2}=0.10{-}0.13;M_{odot}\)和轨道倾角(i=84.3^{\circ}{-}87.0^{\circ}\)相对应。通过模拟椭圆变率和日蚀深度,估计供体温度为 \(T\approx 2900\) K。
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来源期刊
CiteScore
1.70
自引率
22.20%
发文量
0
审稿时长
6-12 weeks
期刊介绍: Astronomy Letters is an international peer reviewed journal that publishes the results of original research on all aspects of modern astronomy and astrophysics including high energy astrophysics, cosmology, space astronomy, theoretical astrophysics, radio astronomy, extragalactic astronomy, stellar astronomy, and investigation of the Solar system.
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