Hatena::Groupkanatatmp

KANATA ObsLog

2009-09-17

[] QSO 0133+476 : faded

f:id:kanataobslog:20090918003824p:image

The object has been faded from 15.5 to 16.7 in V band. The polarization degree also decreased to 17%.

[] 3C 66A : Update the data

f:id:kanataobslog:20090918002826p:image

The figure shows the light curve of 3C 66A and the temporal variation of the polarization degree in V band. The polarization degree of the object rose and was about 18%.

[] SN 2009ig : update

f:id:kanataobslog:20090917224403p:image

We update the light curve of Type Ia SN 2009ig. The decline rate of B-band light curve is compared with those of a typical Type Ia SN 2005cf (Wang et al. 2009) and most luminous Type Ia SN 2009dc (Yamanaka et al. 2009). We suggest that SN 2009ig is classified into over-luminous SNe Ia as SN 1991T-like. We will continue this object.

[] 3C 454.3 : Update the data

f:id:kanataobslog:20090917204133p:image

f:id:kanataobslog:20090917204130p:image

These figures show the light curve, the V-J color variation and the temporal variation of the polarization degree in V band. In Sep 15, 2009, the object was bright in gamma-ray region (ATel #2200). The V-J has recently become red compared with that around JD 2455000. The polarization degree has been variable between 0% and 12% for the last 130 days.