论文标题
沙漠中的热量亚纽扣和微弱的M矮人的温带超级地球：TOI-4479B和TOI-2081b的颜色验证
A hot sub-Neptune in the desert and a temperate super-Earth around faint M dwarfs: Color validation of TOI-4479b and TOI-2081b
论文作者
论文摘要
我们报告了绕过微弱的M矮人的两个苔丝系外行星的发现和验证：TOI-4479B和TOI-2081b。我们使用我们的多色光度法传输分析管道共同分析了空间（TESS任务）和基于地面的（Muscat2，Muscat3和Sinistro Instruments）的光曲线。这使我们能够对候选人进行污染限制，并将其作为行星大小的同伴验证。我们发现TOI-4479b是一个亚北极大小的行星（$ r_ {p} = 2.82^{+0.65} _ { - 0.63}〜\ rm r _ {\ oplus} $）和TOI-2081B （$ r_ {p} = 2.04^{+0.50} _ { - 0.54}〜\ rm r _ {\ oplus} $）。此外，我们获得了TOI-4479b，其短轨道周期为$ 1.15890^{+0.00002} _ { - 0.00001}〜\ rm天$，实际上位于Neptune沙漠中，实际上是几乎最大的超高时期行星，周围是M的M dwarf周围已知的M dwarf。这些结果使TOI-4479b在当前已知的矮人恒星周围的超级球星人群中很少见，这是光谱型随访和未来对行星形成和进化的未来研究的特别有趣的目标。
We report the discovery and validation of two TESS exoplanets orbiting faint M dwarfs: TOI-4479b and TOI-2081b. We have jointly analyzed space (TESS mission) and ground based (MuSCAT2, MuSCAT3 and SINISTRO instruments) lightcurves using our multi-color photometry transit analysis pipeline. This allowed us to compute contamination limits for both candidates and validate them as planet-sized companions. We found TOI-4479b to be a sub-Neptune-sized planet ($R_{p}=2.82^{+0.65}_{-0.63}~\rm R_{\oplus}$) and TOI-2081b to be a super-Earth-sized planet ($R_{p}=2.04^{+0.50}_{-0.54}~\rm R_{\oplus}$). Furthermore, we obtained that TOI-4479b, with a short orbital period of $1.15890^{+0.00002}_{-0.00001}~\rm days$, lies within the Neptune desert and is in fact the largest nearly ultra-short period planet around an M dwarf known to date. These results make TOI-4479b rare among the currently known exoplanet population around M dwarf stars, and an especially interesting target for spectroscopic follow-up and future studies of planet formation and evolution.
