Hatena::Groupkanatatmp

KANATA ObsLog

2011-07-31

[] Possible SN in NGC 3613 : Type Identification

f:id:kanataobslog:20110731195921p:image

We performed the spectroscopic observations of the possible SN in NGC 3613 on Jul 30.6. The spectrum exhibits the SII W-shape feature, SiII 5972, SiII 6355, OI 7774 and CaII IR triplet. The line velocity of SiII6355 reached 10000 km/s. The intensity ratio of SiII 5972 to SiII6355 absorption lines estimated to be 0.5, which is comparable of that of SN 1991bg. These profiles are similar to that of SN 1991bg-like object.