论文标题
SN 2018LAB中的偶尔介质相互作用，一种低亮度II-P超新星，乳胶观察到
Circumstellar Medium Interaction in SN 2018lab, A Low-Luminosity II-P Supernova observed with TESS
论文作者
论文摘要
我们提供了SN 2018LAB的光度和光谱数据，这是一种低光度IIP超新星（LLSN），其V波段峰值光度为$ -15.1 \ pm0.1 $ mag。 SN 2018 LAB通过小于40 MPC（DLT40）SNE调查发现的距离仅0.73天，从而发现了爆炸术，这是通过从过境外部外球运动员调查卫星（TESS）的观察结果确定的。 SN 2018 LAB的苔丝观察结果可能由偶尔培养基（CSM）相互作用提供的密集采样，快速升高的早期光曲线。 SN 2018LAB最早的光谱（$ <$ 2天）中的蓝班，扩展的闪光功能为Ejecta-CSM互动提供了进一步的证据。 SN 2018LAB光谱中的早期发射特征通过具有扩展信封和CLOSLE-IN CSM的红色超级祖细胞的模型很好地描述了。作为为数不多的具有观察到的闪光灯功能的LLSNE之一，SN 2018LAB突出了需要更多早期光谱来解释II型SNE中Flash特征形态的多样性。
We present photometric and spectroscopic data of SN 2018lab, a low luminosity type IIP supernova (LLSN) with a V-band peak luminosity of $-15.1\pm0.1$ mag. SN 2018lab was discovered by the Distance Less Than 40 Mpc (DLT40) SNe survey only 0.73 days post-explosion, as determined by observations from the Transiting Exoplanet Survey Satellite (TESS). TESS observations of SN 2018lab yield a densely sampled, fast-rising, early time light curve likely powered by circumstellar medium (CSM) interaction. The blue-shifted, broadened flash feature in the earliest spectra ($<$2 days) of SN 2018lab provide further evidence for ejecta-CSM interaction. The early emission features in the spectra of SN 2018lab are well described by models of a red supergiant progenitor with an extended envelope and close-in CSM. As one of the few LLSNe with observed flash features, SN 2018lab highlights the need for more early spectra to explain the diversity of flash feature morphology in type II SNe.
