SN 2018agk:Kepler (K2) 中具平滑幂律上升的典型 Ia 型超新星
高能天体物理现象
2021-12-30 v2
摘要
我们展示了 Ia 型超新星(SN Ia)SN 2018agk 的 30 分钟 cadence Kepler/K2 光变曲线,覆盖爆炸前约一周、完整上升阶段以及直至峰值后 40 天的下降段。我们还展示了同一时域内多波段的地基观测,包括初光后前 5 天内的 1 天 cadence DECam 观测。Kepler 早期光变曲线完全符合单一幂律上升,无任何隆起特征证据。我们将 SN 2018agk 与文献中其他无早期超量流量的 SNe~Ia 样本比较。我们发现无超量流量的 SNe Ia 在早期 天内具有窄范围( mag)内缓慢演化的早期颜色。另一方面,在探测到超量的 SNe Ia 中,SN 2017cbv 与 SN 2018oh 倾向更蓝,而 iPTF16abc 的演化类似于无超量的正常 SNe Ia( 中)。我们进一步将 SN 2018agk 的 Kepler 光变曲线与伴星相互作用模型比较,排除了在小于 的视角下存在经历洛希瓣溢出的典型非简并伴星。
引用
@article{arxiv.2108.13607,
title = {SN 2018agk: A Prototypical Type Ia Supernova with a Smooth Power-law Rise in Kepler (K2)},
author = {Qinan Wang and Armin Rest and Yossef Zenati and Ryan Ridden-Harper and Georgios Dimitriadis and Gautham Narayan and V. Ashley Villar and Mark R. Magee and Ryan J. Foley and Edward J. Shaya and Peter Garnavich and Lifan Wang and Lei Hu and Attila Bodi and Patrick Armstrong and Katie Auchettl and Thomas Barclay and Geert Barentsen and Zsófia Bognár and Joseph Brimacombe and Joanna Bulger and Jamison Burke and Peter Challis and Kenneth Chambers and David A. Coulter and Géza Csörnyei and Borbála Cseh and Maxime Deckers and Jessie L. Dotson and Lluís Galbany and Santiago González-Gaitán and Mariusz Gromadzki and Michael Gully-Santiago and Ottó Hanyecz and Christina Hedges and Daichi Hiramatsu and Griffin Hosseinzadeh and D. Andrew Howell and Steve B. Howell and Mark E. Huber and Saurabh W. Jha and David O. Jones and Réka Könyves-Tóth and Csilla Kalup and Charlie Kilpatrick and Levente Kriskovics and Wenxiong Li and Thomas B Lowe and Steven Margheim and Curtis McCully and Ayan Mitra and Jose A. Muñoz and Matt Nicholl and Jakob Nordin and András Pál and Yen-Chen Pan and Anthony L Piro and Sofia Rest and João Rino-Silvestre and César Rojas-Bravo and Krisztián Sárneczky and Matthew R. Siebert and Stephen J. Smartt and Ken Smith and Ádám Sódor and Maximilian D. Stritzinger and Róbert Szabó and Róbert Szakáts and Brad E. Tucker and József Vinkó and Xiaofeng Wang and J. Craig Wheeler and David R. Young and Alfredo Zenteno and Kaicheng Zhang and Gabriella Zsidi},
journal= {arXiv preprint arXiv:2108.13607},
year = {2021}
}
备注
20 pages, 14 figures, 5 tables. Published in ApJ