论文标题

苔丝在120秒和20秒的节奏中观察到的太阳能振荡器的目录

A Catalogue of Solar-Like Oscillators Observed by TESS in 120-second and 20-second Cadence

论文作者

Hatt, Emily, Nielsen, Martin B., Chaplin, William J., Ball, Warrick H., Davies, Guy R., Bedding, Timothy R., Buzasi, Derek L., Chontos, Ashley, Huber, Daniel, Kayhan, Cenk, Li, Yaguang, White, Timothy R., Cheng, Chen, Metcalfe, Travis S., Stello, Dennis

论文摘要

过境系外行星调查卫星(TESS)任务为几乎整个天空的恒星提供了光度光曲线。这允许将星空学应用于尺寸前所未有的潜在太阳能振荡器池。我们旨在生产苔丝在120秒和20秒的节奏模式下观察到的太阳能振荡器的目录。该目录旨在突出显示恒星以30分钟的苔丝节奏Nyquist频率振荡,目的是涵盖主序列和次巨头进化阶段。我们旨在为全局的Asterosis参数提供估计值$ν_ {\ mathrm {max}}} $和$Δν$。我们将新的概率检测算法应用于超过250,000星的120秒和20秒的光曲线。该算法标志的目标是显示出太阳样振荡的特征特征。我们手动审查所得目标列表,以确认存在类似太阳能振荡的存在。使用算法计算的概率密度,我们测量了全局的Asterossismic参数$ν_ {\ Mathrm {max}} $和$Δν$。我们生产一个由4,177个太阳能振荡器的目录,报告$Δν$和$ν_ {\ mathrm {max}} $,价格为$ 98 \%\%$ nater star Count。 Asterosic数据揭示了人力资源图的巨大覆盖范围,填充了红色巨型分支,次巨人制度,并延伸到主序列。与外部目录的交叉匹配表明,检测到的太阳样振荡器中有25个是光谱二进制的组成部分,而28个已确认的行星宿主星。这些结果为这些结果和任何其他感兴趣的苔丝目标提供了精确,独立的强烈震中的潜力。

The Transiting Exoplanet Survey Satellite (TESS) mission has provided photometric light curves for stars across nearly the entire sky. This allows for the application of asteroseismology to a pool of potential solar-like oscillators that is unprecedented in size. We aim to produce a catalogue of solar-like oscillators observed by TESS in the 120-second and 20-second cadence modes. The catalogue is intended to highlight stars oscillating at frequencies above the TESS 30-minute cadence Nyquist frequency with the purpose of encompassing the main sequence and subgiant evolutionary phases. We aim to provide estimates for the global asteroseismic parameters $ν_{\mathrm{max}}$ and $Δν$. We apply a new probabilistic detection algorithm to the 120-second and 20-second light curves of over 250,000 stars. This algorithm flags targets that show characteristic signatures of solar-like oscillations. We manually vet the resulting list of targets to confirm the presence of solar-like oscillations. Using the probability densities computed by the algorithm, we measure the global asteroseismic parameters $ν_{\mathrm{max}}$ and $Δν$. We produce a catalogue of 4,177 solar-like oscillators, reporting $Δν$ and $ν_{\mathrm{max}}$ for $98\%$ of the total star count. The asteroseismic data reveals vast coverage of the HR diagram, populating the red giant branch, the subgiant regime and extending toward the main sequence. A crossmatch with external catalogs shows that 25 of the detected solar-like oscillators are a component of a spectroscopic binary, and 28 are confirmed planet host stars. These results provide the potential for precise, independent asteroseismic constraints on these and any additional TESS targets of interest.

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