Optical studies of a bright Type Iax supernova SN 2020rea
Optical studies of a bright Type Iax supernova SN 2020rea
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明亮的 Iax 型超新星 SN 2020rea 的光学研究
DOI：
10.1093/mnras/stac3059
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发表时间：
2022
影响因子：
4.8
通讯作者：
Dastidar, Raya
中科院分区：
文献类型：
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作者：
Singh, Mridweeka;Misra, Kuntal;Sahu, Devendra K.;Ailawadhi, Bhavya;Dutta, Anirban;Howell, D. Andrew;Anupama, G. C.;Bostroem, K. Azalee;Burke, Jamison;Dastidar, Raya
本文对位于Iax型超新星(SNE)光度端较亮的一颗Iax型超新星(SN)2020rea进行了光学光度和光谱分析。SN2020rea的光曲线下降率为ΔM15(G)=111.31±10.08，与SNE2012Z和2005hk相似。用辐射扩散模型模拟伪测辐射光曲线，得到56Ni的质量为0.13±0.01M⊙，喷发质量为0.77M⊙。SN2020rea在光球相的光谱特征与SN2012Z有很好的相似性。对SN-2020rea早期光谱的Tardis模拟揭示了铁族元素(IGES)的优势。SN2020地区锡兰的光球最大速度附近为∼6500公里S−1，小于飞线的实测值，表明存在明显的混合作用。观测到的SN-2020rea的物理性质与Chandrasekhar质量C-O白矮星的纯爆燃模型的预测相吻合。SN区周围宿主星系的金属丰度为12×10+L(O/H)=68.56×10~(-6)×100.18×××，与SN2012Z相似。
We present optical photometric and spectroscopic analysis of a Type Iax supernova (SN) 2020rea situated at the brighter luminosity end of Type Iax supernovae (SNe). The light curve decline rate of SN 2020rea is Δm15(g) = 1.31 ± 0.08 mag which is similar to SNe 2012Z and 2005hk. Modelling the pseudo-bolometric light curve with a radiation diffusion model yields a mass of56Ni of 0.13 ± 0.01 M⊙and an ejecta mass of 0.77M⊙. Spectral features of SN 2020rea during the photospheric phase show good resemblance with SN 2012Z. TARDIS modelling of the early spectra of SN 2020rea reveals a dominance of Iron Group Elements (IGEs). The photospheric velocity of the Siiiline around maximum for SN 2020rea is ∼ 6500 km s−1which is less than the measured velocity of the Feiiline and indicates significant mixing. The observed physical properties of SN 2020rea match with the predictions of pure deflagration model of a Chandrasekhar mass C–O white dwarf. The metallicity of the host galaxy around the SN region is 12 + log(O/H) = 8.56 ± 0.18 dex which is similar to that of SN 2012Z.
tardis-sn/tardis: TARDIS v3.0 alpha2
DOI：
10.5072/zenodo.263063
发表时间：
2019
期刊：
Int. J. Hum. Comput. Stud.
影响因子：
--
作者：
W. E. Kerzendorf;U. Nöbauer;Stuart A. Sim;S. Lietzau;V. Jancauskas;Christian Vogl;Mikhail Mishin;Fotis Tsamis;A. Boyle;Vaibhav Gupta;Karan Desai;Michael Klauser;F. Beaujean;Adam Suban;E. Heringer;L. Shingles;B. Barna;G. Gautam;Maryam Patel;Talytha Barbosa;Kaushik Varanasi;M. Reinecke;T. Bylund;Laud Bentil;S. Rajagopalan;Rinkle Jain;Sourav Singh;Chinmay Talegaonkar;C. Sofiatti;Pratik Patel;K. Yap;Ujjwal Wahi;Suyash Gupta
通讯作者：
Suyash Gupta