DES15E2mlf：一颗在大爆炸后35亿年爆发且经光谱证实的极亮超新星
星系天体物理
2017-08-02 v1 太阳与恒星天体物理
摘要
我们展示了暗能量巡天（DES）对DES15E2mlf的发现，这是迄今为止经光谱证实的最遥远的极亮超新星（SLSN）。DES15E2mlf的光变曲线与Gemini光谱表明它是一颗位于z = 1.861（回溯时间约10 Gyr）的I型极亮超新星（SLSN-I），峰值绝对星等为M_AB = -22.3 +/- 0.1 mag。鉴于其高红移，我们的数据探测了该超新星在静止参考系紫外（1400-3500 A）波段的性质，发现在最大光度前后14天内C III特征的速度变化了约5600 km/s。我们发现DES15E2mlf宿主星系的恒星质量为3.5^+3.6_-2.4 x 10^9 M_sun，这比典型的SLSN-I宿主星系质量更大。
引用
@article{arxiv.1707.06649,
title = {DES15E2mlf: A Spectroscopically Confirmed Superluminous Supernova that Exploded 3.5 Gyr After the Big Bang},
author = {Y. -C. Pan and R. J. Foley and M. Smith and L. Galbany and C. B. D'Andrea and S. Gonzalez-Gaitan and M. J. Jarvis and R. Kessler and E. Kovacs and C. Lidman and R. C. Nichol and A. Papadopoulos and M. Sako and M. Sullivan and T. M. C. Abbott and F. B. Abdalla and J. Annis and K. Bechtol and A. Benoit-Levy and D. Brooks and E. Buckley-Geer and D. L. Burke and A. Carnero Rosell and M. Carrasco Kind and J. Carretero and F. J. Castander and C. E. Cunha and L. N. da Costa and S. Desai and H. T. Diehl and P. Doel and T. F. Eifler and D. A. Finley and B. Flaugher and J. Frieman and J. Garcia-Bellido and D. A. Goldstein and D. Gruen and R. A. Gruendl and J. Gschwend and G. Gutierrez and D. J. James and A. G. Kim and E. Krause and K. Kuehn and N. Kuropatkin and O. Lahav and M. Lima and M. A. G. Maia and M. March and J. L. Marshall and P. Martini and R. Miquel and P. Nugent and A. A. Plazas and A. K. Romer and E. Sanchez and V. Scarpine and M. Schubnell and I. Sevilla-Noarbe and R. C. Smith and F. Sobreira and E. Suchyta and M. E. C. Swanson and R. C. Thomas and A. R. Walker},
journal= {arXiv preprint arXiv:1707.06649},
year = {2017}
}
备注
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