更新的IS CMa绝对参数和运动学参数

IF 1.1 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Astronomische Nachrichten Pub Date : 2024-06-23 DOI:10.1002/asna.20240038

Serkan Evcil, Simge Adalalı, Neslihan Alan, Remziye Canbay, Selcuk Bilir

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Following the analysis, the masses and radii of the primary and secondary components were determined as <math>\n <semantics>\n <mrow>\n <msub>\n <mi>M</mi>\n <mn>1</mn>\n </msub>\n <mo>=</mo>\n <mn>1.58</mn>\n <mo>±</mo>\n <mn>0.01</mn>\n <msub>\n <mi>M</mi>\n <mo>⊙</mo>\n </msub>\n </mrow>\n <annotation>$$ {M}_1=1.58\\pm 0.01{M}_{\\odot } $$</annotation>\n </semantics></math>, <math>\n <semantics>\n <mrow>\n <msub>\n <mi>M</mi>\n <mn>2</mn>\n </msub>\n <mo>=</mo>\n <mn>0.48</mn>\n <mo>±</mo>\n <mn>0.02</mn>\n <msub>\n <mi>M</mi>\n <mo>⊙</mo>\n </msub>\n </mrow>\n <annotation>$$ {M}_2=0.48\\pm 0.02{M}_{\\odot } $$</annotation>\n </semantics></math>, and <math>\n <semantics>\n <mrow>\n <msub>\n <mi>R</mi>\n <mn>1</mn>\n </msub>\n <mo>=</mo>\n <mn>1.93</mn>\n <mo>±</mo>\n <mn>0.01</mn>\n <msub>\n <mi>R</mi>\n <mo>⊙</mo>\n </msub>\n </mrow>\n <annotation>$$ {R}_1=1.93\\pm 0.01{R}_{\\odot } $$</annotation>\n </semantics></math>, <math>\n <semantics>\n <mrow>\n <msub>\n <mi>R</mi>\n <mn>2</mn>\n </msub>\n <mo>=</mo>\n <mn>1.14</mn>\n <mo>±</mo>\n <mn>0.01</mn>\n <msub>\n <mi>R</mi>\n <mo>⊙</mo>\n </msub>\n </mrow>\n <annotation>$$ {R}_2=1.14\\pm 0.01{R}_{\\odot } $$</annotation>\n </semantics></math>, respectively. 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It has an increasing rate of <math>\n <semantics>\n <mrow>\n <mi>dP</mi>\n <mo>/</mo>\n <mi>dt</mi>\n </mrow>\n <annotation>$$ dP/ dt $$</annotation>\n </semantics></math> = 1.09 <math>\n <semantics>\n <mrow>\n <mo>×</mo>\n </mrow>\n <annotation>$$ \\times $$</annotation>\n </semantics></math> 10<math>\n <semantics>\n <mrow>\n <msup>\n <mrow></mrow>\n <mrow>\n <mo>−</mo>\n <mn>7</mn>\n </mrow>\n </msup>\n </mrow>\n <annotation>$$ {}^{-7} $$</annotation>\n </semantics></math> day year<math>\n <semantics>\n <mrow>\n <msup>\n <mrow></mrow>\n <mrow>\n <mo>−</mo>\n <mn>1</mn>\n </mrow>\n </msup>\n </mrow>\n <annotation>$$ {}^{-1} $$</annotation>\n </semantics></math>. Using PARSEC stellar evolutionary tracks and isochrones with solar metallicity estimated the age of IS CMa as <math>\n <semantics>\n <mrow>\n <mn>1.3</mn>\n <mo>±</mo>\n <mn>0.1</mn>\n </mrow>\n <annotation>$$ 1.3\\pm 0.1 $$</annotation>\n </semantics></math> Gyr. 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引用次数: 0

摘要

食双星系统是天体物理学的重要天体，通过直接观测可以确定恒星的基本参数。在这项研究中，我们利用威尔逊和德文尼代码，通过同时分析径向速度和TESS光曲线，精确测定了双星成分恒星的基本参数。分析结果表明，主成分和副成分的质量和半径分别为、和。此外，还计算出 IS CMa 的距离为 pc。根据对中食时间的分析，可以发现轨道周期的变化是一条向上的抛物线。它的增长率为 = 1.09 10 天年。利用 PARSEC 恒星演化轨迹和太阳金属度等时线，估计 IS CMa 的年龄为 Gyr。从该系统的天体测量和光谱数据中获得了IS CMa的运动学和银河轨道参数。银河轨道分析表明，IS CMa 是在太阳圈内形成的，属于年轻的薄盘群体。

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Updated absolute parameters and kinematics of IS CMa

Eclipsing binary systems are significant objects for astrophysics in that direct observations can determine the fundamental parameters of stars. In this study, we precisely determined the fundamental parameters of the binary component stars obtained by simultaneous analysis of radial velocities and the TESS light curve using the Wilson and Devinney code. Following the analysis, the masses and radii of the primary and secondary components were determined as $M_{1} = 1.58 \pm 0.01 M_{⊙}$ , $M_{2} = 0.48 \pm 0.02 M_{⊙}$ , and $R_{1} = 1.93 \pm 0.01 R_{⊙}$ , $R_{2} = 1.14 \pm 0.01 R_{⊙}$ , respectively. Furthermore, the distance of IS CMa is calculated as $92.7 \pm 6.5$ pc. On the basis of the analysis of the mid-eclipse times, it was found that the variation in the orbital period is represented by an upward parabola. It has an increasing rate of $dP / dt$ = 1.09 $\times$ 10 $^{- 7}$ day year $^{- 1}$ . Using PARSEC stellar evolutionary tracks and isochrones with solar metallicity estimated the age of IS CMa as $1.3 \pm 0.1$ Gyr. Kinematic and Galactic orbital parameters of IS CMa were obtained from the astrometric and spectroscopic data of the system. The Galactic orbit analysis reveals that IS CMa formed inside the solar circle and it is a member of the young thin-disc population.

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来源期刊

Astronomische Nachrichten 地学天文-天文与天体物理

CiteScore

1.80

自引率

11.10%

发文量

审稿时长

4-8 weeks

期刊介绍： Astronomische Nachrichten, founded in 1821 by H. C. Schumacher, is the oldest astronomical journal worldwide still being published. Famous astronomical discoveries and important papers on astronomy and astrophysics published in more than 300 volumes of the journal give an outstanding representation of the progress of astronomical research over the last 180 years. Today, Astronomical Notes/ Astronomische Nachrichten publishes articles in the field of observational and theoretical astrophysics and related topics in solar-system and solar physics. Additional, papers on astronomical instrumentation ground-based and space-based as well as papers about numerical astrophysical techniques and supercomputer modelling are covered. Papers can be completed by short video sequences in the electronic version. Astronomical Notes/ Astronomische Nachrichten also publishes special issues of meeting proceedings.