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  • Optical Observations of the...
    Zhang, Jujia; Wang, Xiaofeng; Vinkó, József; Wheeler, J. Craig; Chang, Liang; Yang, Yi; Wang, Lifan; Zhai, Qian; Rui, Liming; Mo, Jun; Zhang, Tianmeng; Zhang, Yu; Wang, Jianguo; Mao, Jirong; Wang, Chuanjun; Yi, Weimin; Xin, Yuxin; Li, Wenxiong; Lun, Baoli; Lu, Kaixing; Sai, Hanna; Zheng, Xiangming; Zhang, Xiliang; Zhou, Xu; Bai, Jinming

    The Astrophysical journal, 08/2018, Letnik: 863, Številka: 1
    Journal Article

    We present optical spectroscopic and photometric observations of the nearby type Ic supernova (SN Ic) SN 2014L. This SN was discovered by the Tsinghua-NAOC Transient Survey (TNTS) in the nearby type-Sc spiral galaxy M99 (NGC 4254). Fitting to the early-time light curve indicates that SN 2014L was detected at only a few hours after the shock breakout, and it reached a peak brightness of MV = −17.73 0.28 mag (L = 2.06 0.50 ×1042 erg s−1) approximately 13 days later. SN 2014L shows a close resemblance to SN 2007gr in the photometric evolution, while it shows stronger absorption features of intermediate-mass elements (especially Ca ii) in the early-time spectra. Based on simple modeling of the observed light curves, we derived the mass of synthesized 56Ni as MNi = 0.075 0.025 M , and the mass and total energy of the ejecta as Mej = 1.00 0.20M and Eej = 1.45 0.25 foe, respectively. Given these typical explosion parameters, the early detection, and the extensive observations, we suggest that SN 2014L could be a template sample for the investigation of SNe Ic.