2016 coi和2018 ebt两颗Ic-BL型超新星的测光观测
Photometric observations of two type Ic-BL Supernovae: 2016coi and 2018ebt
摘要：
介绍了Ic-BL型超新星2016 coi和2018 ebt的CCD BVRI测光。这两个物体的光变曲线的形状对于这类SNe是典型的。SN 2016 coi在最大光照后100天左右出现亮度下降率的变化。SN 2018 ebt的光变曲线与SN Ic-BL 2002 ap的光变曲线最匹配。对于SN 2018 ebt，我们得出了最大光的日期和大小，在演化后期的下降率，并提出了宿主星系灭绝的证据。
英文摘要：
CCD BVRI photometry is presented for the type Ic-BL Supernovae 2016coi and 2018ebt. The shape of the light curves for both objects is typical for this class of SNe. A change of brightness decline rate at about 100 days after maximum light is observed for SN 2016coi. The light curves of SN 2018ebt are best matched by those of SN Ic-BL 2002ap. For SN 2018ebt, we derived the dates and magnitudes of maximum light, rates of decline at late stages of evolution and presented evidence for extinction in the host galaxy being negligible.
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