The First Photometric Study of the Binary System CSS J003106.8+313347

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

Astrophysics Pub Date : 2024-01-16 DOI:10.1007/s10511-024-09802-9

E. Paki, S. Baudart, A. Poro

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引用次数: 0

Abstract

We performed the first photometric study of the CSS J003106.8+313347 W Ursae Majoris (WUMa)-type system based on ground-based observations. We extracted times of minima from our observations and proposed a linear ephemeris based on the increasing incline of the orbital period using a Markov chain Monte Carlo (MCMC) approach. The PHOEBE Python code and the MCMC approach were used for the light curve analysis. This system did not need starspots for the light curve analysis. Mass ratio, fillout factor, and inclination were obtained as 0.699, 0.322, and 60°.6 respectively. We also estimated the absolute parameters of the system using the Gaia DR3 parallax. Therefore, the masses, radii, and luminosities have been determined to be M₁ = 1.675, M₂ = 1.171, R₁ = 1.292, R₂ = 1.097, L₁ = 1.348, and L₂ = 1.221. The orbital angular momentum J₀ of the CSS J003106.8+313347 illustrates that this system is located in a region of contact binaries. The positions of the primary and secondary components on the Hertzsprung-Russell (HR) diagram are depicted.

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首次对双星系统 CSS J003106.8+313347 进行光度研究

我们首次根据地基观测数据对CSS J003106.8+313347 大熊座W（WUMa）型系统进行了测光研究。我们从观测数据中提取了极小时间，并利用马尔可夫链蒙特卡洛（MCMC）方法提出了基于轨道周期倾斜度增加的线性星历。光曲线分析使用了 PHOEBE Python 代码和 MCMC 方法。该系统的光曲线分析不需要星斑。质量比、填充因子和倾角分别为 0.699、0.322 和 60°.6。我们还利用 Gaia DR3 视差估算了该系统的绝对参数。因此，质量、半径和光度被确定为 M1 = 1.675、M2 = 1.171、R1 = 1.292、R2 = 1.097、L1 = 1.348 和 L2 = 1.221。CSS J003106.8+313347 的轨道角动量 J0 表明，这个系统位于一个接触双星区域。主成分和副成分在赫兹普朗-拉塞尔（HR）图上的位置如图所示。

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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.