Hatena::Groupkanatatmp

KANATA ObsLog

2009-04-09

[] SN 2009an : Secondary maximum in I-band

f:id:kanataobslog:20090410023719p:image

We update the light curve of Type Ia SN 2009an. The secondary maximum day of SN 2009an is estimated as around 24 days after B-band maximum, which suggests that SN 2009an categorized to normal SNe Ia (Branch et al.(1993)). The secondary maximum of I-band magnitude would be thought to be luminosity indicator, though there are a small uncertainty of maximum day. In order to determine absolute magnitude, we require to derive the more reliable parameter using B-band light curve. We will continue the observations.