We update the light curve of SN 2009dc. The I-band luminosity began to rise to secondary peak, which is expected to reach at later than normal SN Ia. The R-band light curve showed the shoulder-shape structure. Such a behavior is also commonly seen in both typical SNe Ia and peculiar bright SN 2006gz.
We update light curves of the dust-forming classical nova V1280 Sco. The decline trend continues in V-band.
We update the light curve of the peculiar Type Ia SN 2009dc. The photometric results indicated that I-band light curve may begin to rise to secondary maximum. In another peculiar Type Ia SN 2006gz, the secondary maximum is not seen. But, if the secondary maximum is confirmed, the maximum timing may be another luminosity indicator (Kasen 2006). We will continue to observe this peculiar object.
■ [unidentified] J1509-21: the outburst finished
We confirmed that the fading from the outburst finished and the object has returned to the quiescent state.
The figure shows the light curve in V band and the V-J color variation of the object. The object has recently been faded and the V-J color became redder.
■ blazar PKS 1510-089 : Optical flaring !
The object has recently been bright since JD 2454900. In JD 2454960, the object has an exceptional flare with a rising of a polarization degree. This figure shows the light curve and temporal variation of the polarization degree of the object in V band. The brightness reached about V~13.3. The peak of the polarization degree anticipated that of the brightness. The polarization degree reached about 37%.
We update the light curve of Type II SN 2009dd. The light curve shows an amplitude of 0.2~0.5mag, does not rapidly fading. Such a behavior for Type IIP supernova is typically seen early plateau phase.
■ [blazar] PKS 1510-089 : Rebrightening
The figure shows the light curve and the temporal variation of the Polarization degree the object in V band. The object had a flare from JD 2454900 to 2454940. Recently, the object has a rebrightening, and at the same time, the polarization degree becomes high. This behavior is similar to the prior flare.
■ [blazar] PKS 1502+106 : Bright
The object was in the brightest state in our observing period. The object has been bright since JD 2454945. The polarization degree was also high compared with that in JD 2454940.
The object has been faded since JD 2454940. The brightness reached V~15.6. The color variation has become bluer compared with the color around JD 2454900.
3C 273 is one of the most famous blazar. The object has been observed since 11 Dec. 2008. The figure shows the light curve and the temporal variation of the polarization degree in V band of the object. The brightness was varied. The amplitude of the magnitude was about 0.2 in V band. The polarization degree was less than 1%.
We performed B,V,Rc,Ic-band photometric observations for Type II SN 2009dd. The light curve showed the rapidly fading, and a color became red. The shape of light curve may mean that the plateau phase had already finished, or this object was "Type II linear SN". We will perform a polarimetric observations for SN 2009dd.