Investigative study of five low mass ratio semi-detached binaries

IF 1.8 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Astrophysics and Space Science Pub Date : 2024-10-21 DOI:10.1007/s10509-024-04368-6

Vinay Kumar G, Shanti Priya Devarapalli, Mudumba Parthasarathy, Rukmini Jagirdar, Keivan G. Stassun

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Abstract

We present the first pulsation analysis of four totally eclipsing Algol systems S Cnc, SS Cet, TW And, and VW Cyg using the latest data available from Kepler (K2), and TESS databases. Based on the characteristics observed they are classified to be oscillating eclipsing Algol binaries with primary components having \(\gamma \) Dor type pulsations. The photometric solutions were derived for five Algols including TT Hya using Wilson-Devinney code (v2015), and the absolute parameters of all Algols in study were computed. The period variation study was also conducted using the O-C diagram and the variation is correlated either to mass loss or mass transfer or presence of third body in these systems. All the available IUE high and low resolution spectra for S Cnc, TT Hya as well as VBT and LAMOST spectra for SS Cet were used to measure the equivalent widths of prominent lines, and their significance is presented. Based on the photometric, spectroscopic, period variation, and pulsation studies the evolutionary scenario of all the five Algols is discussed using \(T_{\mathrm{eff}}\) - Luminosity, q-r and q-p diagrams.

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五个低质量比半分离双星的调查研究

我们利用开普勒（K2）和TESS数据库提供的最新数据，首次对S Cnc、SS Cet、TW And和VW Cyg这四个完全食星系统进行了脉动分析。根据观测到的特征，它们被归类为振荡食星双星，其主成分具有\(\gamma \) Dor型脉动。利用威尔逊-德文尼（Wilson-Devinney）代码（v2015）推导出了包括TT Hya在内的五颗恒星的测光解，并计算出了研究中所有恒星的绝对参数。还利用 O-C 图进行了周期变化研究，这些变化与质量损失、质量转移或这些系统中第三体的存在有关。利用所有可用的 S Cnc 和 TT Hya 的 IUE 高分辨率和低分辨率光谱以及 SS Cet 的 VBT 和 LAMOST 光谱来测量突出谱线的等效宽度，并介绍其意义。根据对测光、光谱、周期变化和脉动的研究，使用 \(T_\mathrm{eff}}\) - 光度图、q-r 图和 q-ps 图讨论了所有五颗天体的演化情况。

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来源期刊

Astrophysics and Space Science 地学天文-天文与天体物理

CiteScore

3.40

自引率

5.30%

发文量

106

审稿时长

2-4 weeks

期刊介绍： Astrophysics and Space Science publishes original contributions and invited reviews covering the entire range of astronomy, astrophysics, astrophysical cosmology, planetary and space science and the astrophysical aspects of astrobiology. This includes both observational and theoretical research, the techniques of astronomical instrumentation and data analysis and astronomical space instrumentation. We particularly welcome papers in the general fields of high-energy astrophysics, astrophysical and astrochemical studies of the interstellar medium including star formation, planetary astrophysics, the formation and evolution of galaxies and the evolution of large scale structure in the Universe. Papers in mathematical physics or in general relativity which do not establish clear astrophysical applications will no longer be considered. The journal also publishes topically selected special issues in research fields of particular scientific interest. These consist of both invited reviews and original research papers. Conference proceedings will not be considered. All papers published in the journal are subject to thorough and strict peer-reviewing. Astrophysics and Space Science features short publication times after acceptance and colour printing free of charge.