Hatena::Groupkanatatmp

KANATA ObsLog

2009-07-18

[] S5 0716+714 Update the data

f:id:kanataobslog:20090718195246p:image

The object has been variable and the amplitude of the magnitude was about 2 mag. The V-J color was also variable. When the object was bright, the V-J color was bluer. This feature is called the "bluer-when-brighter".

[] OJ 287 : Recent behavior

f:id:kanataobslog:20090718194621p:image

The figure shows the light curve and the temporal variation of the polarization degree in V band. The object has been faded since JD 2454750. In JD 2454985, the object was the faintest state. On the other hand, the polarization degree has been risen. During JD 2454960, the polarization degree reached 38 %.

[] 3C 279 : Update the data

f:id:kanataobslog:20090718194047p:image

The figure shows the light curve (red point) and the temporal variation of the polarization degree (blue point) in V band. The object has been faint since JD 2454930. However, the polarization degree of the object has slightly risen in the recent data point.