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arXiv 2402.15935astro-ph.SRastro-ph.EP
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TESS 感兴趣天体中的脉动现象

Pulsation in TESS Objects of Interest

R. L. Gomes, B. L. Canto Martins, D. O. Fontinele, L. A. Almeida, R. Alves Freire, A. C. Brito, R. G. S. B. de Amorim, C. E. Ferreira Lopes, D. Hazarika, E. Jan… 展开作者

R. L. Gomes, B. L. Canto Martins, D. O. Fontinele, L. A. Almeida, R. Alves Freire, A. C. Brito, R. G. S. B. de Amorim, C. E. Ferreira Lopes, D. Hazarika, E. Janot-Pacheco, I. C. Leão, Y. S. Messias, R. A. A. Souza, J. R. De Medeiros

AI总结:

本文在 TESS 的 3901 颗 TOI 中发现三颗具有经典脉动特征的恒星(两颗 δ Sct 型、一颗 γ Dor 型),为研究恒星-行星相互作用及行星探测提供了新样本。

摘要:

我们报告在凌星系外行星巡天卫星(TESS)感兴趣天体(TOI)中发现三颗具有脉动特征的天体,且均在多个扇区中被观测到。我们的主要目标是探究在 TOI 脉动天体中,经典脉动变星(如 δ Sct、γ Dor、天琴座 RR 型变星和造父变星)的种类多样性有多大。分析显示,在 3901 颗具有可用光变曲线(LCs)的 TOI 样本中,有两颗恒星呈现 δ Sct 型脉动特征,一颗呈现 γ Dor 型脉动特征。迄今为止,已知的拥有行星的脉动恒星数量非常稀少。当前发现也为研究不同天体物理现象提供了一个令人兴奋的实验室,包括恒星-行星相互作用对脉动的影响以及行星伴星的时间测定探测。我们还识别出 16 颗 TOI 恒星,其周期性和光变曲线形态与不同的经典脉动类别相符,但对其中大多数而言,主导频率信号来源于污染源。

英文摘要:

We report the discovery of three Transiting Exoplanet Survey Satellite Objects of Interest (TOI) with signatures of pulsation, observed in more than one sector. Our main goal is to explore how large is the variety of classical pulsators such as $δ$ Sct, $γ$ Dor, RR Lyrae and Cepheid among TOI pulsators. The analysis reveals two stars with signatures of $δ$ Sct and one of $γ$ Dor, out of a sample of 3901 TOIs with available light curves (LCs). To date, there is a very scarce number of known pulsating stars hosting planets. The present finding also emerges as an exciting laboratory for studying different astrophysical phenomena, including the effects of star-planet interaction on pulsation and timing detection of planetary companions. We have also identified 16 TOI stars with periodicities and LCs morphology compatible with different classical pulsating classes, but for most of them, the dominant frequency signals originate from contaminating sources.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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