DES16C3cje：一颗低光度、长寿命的超新星
高能物理 - 唯象学
2020-06-03 v2 高能天体物理现象
摘要
我们介绍了DES16C3cje，这是一颗在红移0.0618处由暗能量巡天（DES）探测到的低光度、长寿命的II型超新星（SN II）。DES16C3cje是一颗独特的超新星。其光谱特征为极窄的光球层谱线，对应非常低的膨胀速度（ km s），而光变曲线显示初始峰值在50天后衰减，随后在100天内缓慢重新变亮，达到绝对亮度M mag。晚期光变曲线的衰减速率慢于Co放射性衰变供能所预期的速率，但与吸积供能所预期的速率相当。通过将热光变曲线与流体动力学模型进行比较，我们发现DES16C3cje可以用以下两种情景之一解释：i）低爆炸能量（0.11 foe）和相对较大的Ni产量（0.075 M），来自一颗典型的其他II型超新星中约15 M的红超巨星前身星；或ii）一颗相对致密的约40 M恒星，爆炸能量为1 foe，Ni产量为0.08 M。两种情景都需要额外的能量输入来解释晚期光变曲线，这与速率约为 M s的回流吸积一致。
引用
@article{arxiv.2001.11559,
title = {DES16C3cje: A low-luminosity, long-lived supernova},
author = {C. P. Gutiérrez and M. Sullivan and L. Martinez and M. C. Bersten and C. Inserra and M. Smith and J. P. Anderson and Y. -C. Pan and A. Pastorello and L. Galbany and P. Nugent and C. R. Angus and C. Barbarino and T. -W. Chen and T. M. Davis and M. Della Valle and R. J. Foley and M. Fraser and C. Frohmaier and S. González-Gaitán and G. F. Lewis and M. Gromadzki and E. Kankare and R. Kokotanekova and J. Kollmeier and M. R. Magee and K. Maguire and A. Möller and N. Morrell and M. Nicholl and M. Pursiainen and J. Sollerman and N. E. Sommer and E. Swann and B. E. Tucker and P. Wiseman and M. Aguena and S. Allam and S. Avila and E. Bertin and D. Brooks and E. Buckley-Geer and D. L. Burke and A. Carnero Rosell and M. Carrasco Kind and J. Carretero and M. Costanzi and L. N. da Costa and J. De Vicente and S. Desai and H. T. Diehl and P. Doel and T. F. Eifler and B. Flaugher and P. Fosalba and J. Frieman and J. García-Bellido and D. W. Gerdes and D. Gruen and R. A. Gruendl and J. Gschwend and G. Gutierrez and S. R. Hinton and D. L. Hollowood and K. Honscheid and D. J. James and K. Kuehn and N. Kuropatkin and O. Lahav and M. Lima and M. A. G. Maia and M. March and F. Menanteau and R. Miquel and E. Morganson and A. Palmese and F. Paz-Chinchón and A. A. Plazas and M. Sako and E. Sanchez and V. Scarpine and M. Schubnell and S. Serrano and I. Sevilla-Noarbe and M. Soares-Santos and E. Suchyta and M. E. C. Swanson and G. Tarle and D. Thomas and T. N. Varga and A. R. Walker and R. Wilkinson},
journal= {arXiv preprint arXiv:2001.11559},
year = {2020}
}
备注
Accepted in MNRAS. 17 pages, 6 figures