Hatena::Groupkanatatmp

KANATA ObsLog

2010-03-28

[] S5 0716+714 : rising the polarization degree

f:id:kanataobslog:20100328195210p:image

The figure shows the light curve and the temporal variation of the object in the V band. The polarization degree of the object became high, about 24 %. The polarization degree of the object has been typically low compared with other High Polarized Quasars (HPQs), less than 10 % in our dense monitoring from 2008 to 2010. However, the object was in the high polarized state during JD 2455180. In current state, the object was similar in the high polarized state.

2010-03-27

[] Spectroscopy of V407 Cyg : update

f:id:kanataobslog:20100328015454p:image

We update the spectra of symbiotic nova V407 Cyg.

2010-03-24

[] Spectroscopy of Nova Sco 2010 : update

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We update the spectra of Nova 2010 Oph.

[] Spectroscopy of V407 Cyg : observations start

f:id:kanataobslog:20100325001624p:image

We update the spectrum of the symbiotic nova V407 Cyg.

2010-03-22

[] PTF10bzf (=SN 2010ah) : update

f:id:kanataobslog:20100322231917p:image

We update the light curve of SN 2010ah.

2010-03-21

[] U Sco : update

f:id:kanataobslog:20100321184205p:image

We update the light curve of U Sco.

2010-03-20

[] Spectroscopy of Nova Sco 2010 : update

f:id:kanataobslog:20100321043421p:image

We update the spectra of Nova Sco 2010.

[] Spectroscopy of Nova Oph 2010 No.2 : update

f:id:kanataobslog:20100321042607p:image

We update the spectra of Nova Oph 2010 No.2.

[] Type Ia SN 2010Y : update

f:id:kanataobslog:20100321041536p:image

We have performed the photometric observations of normal Type Ia SN 2010Y. We confirmed that the secondary maximum of I-band light curve had already passed.

[] PTF10bzf (=SN 2010ah) : update

f:id:kanataobslog:20100321041355p:image

We update the light curve of the Type Ic SN 2010ah (= PTF10bzf).

[] Spectroscopy of V407 Cyg : observations start

f:id:kanataobslog:20100321040214p:image

We have started the spectroscopic observations of symbiotic nova since Mar. 18 (UT). The spectrum shows the strong emissions of the Balmer and Paschen series. The HeI, FeII and OI are also seen in this spectrum. This object is confirmed as a symbiotic star, which is consists of the white dwarf and the Mira-type star. When a nova eruption occurs in such a system, we expect to confirm the emissions line of the higher excitations level due to the interactions of nova ejecta with the circumstellar material. In the case of RS Oph, the highly excited emissions line were clearly detected in their spectra (Iijima 2009). We continue the spectroscopic observations of the symbiotic nova V407 Cyg.

2010-03-19

[] OJ 287 : Update the data

f:id:kanataobslog:20100320020506p:image

We update the light curve and the temporal variation of the polarization degree in V band.

2010-03-17

[] broad-lined Type Ic SN 2010ah (=PTF10bzf) : update

f:id:kanataobslog:20100318032346p:image

We update the light curve of SN 2010ah.

[] Type Ia SN 2009nr : update

f:id:kanataobslog:20100318025229p:image

We update the light curve of Type Ia SN 2009nr.

[] Type II SN 2009ls : update

f:id:kanataobslog:20100318022457p:image

We update the light curve of Type II SN 2009ls.

2010-03-14

[] broad-lined Type Ic PTF10bzf (=SN 2010ah) : observations start

f:id:kanataobslog:20100314230226p:image

We have started the photometric observations of the broad-lined Type Ic PTF10bzf (=SN 2010ah) since Mar. 11. The rapid decline of the light curve indicates that the this SN have already missed around the maximum light. We will observe this object.

[] Type II SN 2009ls : update

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We update the light curve of Type II SN 2009ls.

2010-03-12

[] V1280 Sco : a spectroscopy at 3 years after its outburst

f:id:kanataobslog:20100313014826p:image

V1280 Sco is the peculiar slow novae, whose early photometry in optical and near-infrared regions indicates that the dust formation have undergone just after its maximum light. After the rapidly fading in the light curve, the luminosity has slowly been increasing in 3 years and the recent apparent magnitude was reported of ~10.7 mag from AAVSO. We performed the spectroscopy for V1280 Sco at 2010 Mar. 11 (UT). The spectrum dominated the emissions of Balmer series, HeI and OI. Especially, the HeI clearly shows the P-Cyg profile. This result suggests that the expanding shell would be optically thick.

[] Type IA SN 2010Y : update

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We update the light curve of Type Ia SN 2010Y.