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arXiv 2410.00577astro-ph.EPastro-ph.SR
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环绕巴纳德星的一颗亚地球质量行星:TESS测光数据中无凌日证据

A sub-Earth-mass planet orbiting Barnard's star: No evidence of transits in TESS photometry

A. K. Stefanov, J. I. González Hernández, A. Suárez Mascareño, N. Nari, R. Rebolo, M. Damasso, A. Castro-González, M. -R. Zapatero Osorio, C. Allende Prieto, A.… 展开作者

A. K. Stefanov, J. I. González Hernández, A. Suárez Mascareño, N. Nari, R. Rebolo, M. Damasso, A. Castro-González, M. -R. Zapatero Osorio, C. Allende Prieto, A. M. Silva, C. J. A. P. Martins

AI总结:

本研究利用TESS在Sector 80的测光数据,探测环绕巴纳德星的亚地球质量行星Barnard b的凌日现象。去趋势光变曲线平坦且模型推断无凌日证据,为该行星轨道倾角设定了87.9度的3σ上限。

摘要:

环绕巴纳德星的一颗亚地球质量行星,被命名为Barnard b,近期被宣布发现。几乎同时,凌日系外行星巡天卫星(TESS)在Sector 80发布了巴纳德星的首批测光数据。我们探讨了Barnard b在TESS测光中出现凌日的可能性。去趋势后的2分钟光变曲线显得平坦,通量均方根为0.411千分率。盲测和知情凌日曲线模型推断的尝试表明,没有Barnard b或任何其他天体凌日的证据。这为Barnard b的轨道倾角提供了87.9度的3σ上限。

英文摘要:

A sub-Earth-mass planet orbiting Barnard's star, designated as Barnard b, has been recently announced. At almost the same time, the first photometric data of Barnard's star by the Transit Exoplanet Survey Satellite (TESS) was released in Sector 80. We explore the possibility of emergent transits of Barnard b in TESS photometry. The detrended 2 min light curve appears to be flat, with a flux root mean square of 0.411 parts per thousand. Attempts of blind and informed transit-curve model inference suggest no evidence of transiting Barnard b, or any other body. This provides a 3$σ$ upper bound of 87.9 degrees for the orbital inclination of Barnard b.

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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