Optical Observations of the Young Type Ic Supernova SN 2014L in M99 Academic Article uri icon


  • Abstract 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 M V = 17.73 0.28 mag (L = [2.06 0.50] 1042 erg s1) 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 M Ni = 0.075 0.025 M , and the mass and total energy of the ejecta as M ej = 1.00 0.20M and E ej = 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.

published proceedings


altmetric score

  • 8.08

author list (cited authors)

  • Zhang, J., Wang, X., Vinko, J., Wheeler, J. C., Chang, L., Yang, Y. i., ... Bai, J.

citation count

  • 13

complete list of authors

  • Zhang, Jujia||Wang, Xiaofeng||Vinko, Jozsef||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

publication date

  • August 2018