THE BRIGHT SN 1979 C IN M 100.
THE BRIGHT SN 1979 C IN M 100.
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DOI：
10.1086/130772
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发表时间：
1981-02
影响因子：
3.5
通讯作者：
G. de Vaucouleurs;A. de Vaucouleurs;R. Buta;H. Ables;A. Hewitt
中科院分区：
文献类型：
--
作者：
G. de Vaucouleurs;A. de Vaucouleurs;R. Buta;H. Ables;A. Hewitt
本文讨论了在弱棒旋星系M100中发现的亮超新星1979 c的观测特征。SN 1979 c的UBV光和色曲线是根据1979年4月15日至8月4日进行的视觉、摄影和光电测光以及补充的发现前观测和IUE数据得出的。在B-V和U-B中，M100的星际红化值分别为0.12 +或-0.03和0.08，而银河系中相应的红化值分别为0.06 +或-0.02和0.04。由此得到B-V和U-B的总色余分别为0.18 +或-0.04和0.12 +或-0.03，对应于B的总色余为0.75和v为0.55星等。M100的距离模数为30.30 +或-0.15，这导致SN 1979 c的绝对B星等为-19.45，使其成为有记录以来最亮的II型超新星。
The observational characteristics of the bright supernova 1979c discovered in the weak-barred spiral galaxy M100 are discussed. The UBV light and color curves of SN 1979c were derived from coordinated visual, photographic and photoelectric photometry carried out from April 15 to August 4, 1979 and supplementary prediscovery observations and IUE data. Values of 0.12 + or - 0.03 and 0.08 are estimated for the interstellar reddening in M100 in B-V and U-B, respectively, while values of 0.06 + or - 0.02 and 0.04 are adopted for the corresponding reddenings in the Galaxy. Total color excesses in B-V and U-B of 0.18 + or - 0.04 and 0.12 + or - 0.03, respectively, are thus obtained, corresponding to total extinctions in B of 0.75 and v of 0.55 magnitudes. A distance modulus of M100 of 30.30 + or - 0.15 is derived, which leads to a corrected absolute B magnitude for SN 1979c of -19.45, making it the brightest type II supernova on record.