Hatena::Groupkanatatmp

KANATA ObsLog

2009-12-28

[] PKS 2155-304 : Faded

f:id:kanataobslog:20091228205614p:image

The figure shows the light curve and temporal variation of the polarization degree of the object in V band. Although the object had gradually been bright since JD~2455100, the object was faded at recent data. The polarization degree of the object was still high and about 8%.

[] 3C 454.3 : Update the data

f:id:kanataobslog:20091228205206p:image

The figure shows the light curve of the object in V band. The object has recently been bright since JD~2455162, and reached about 13.7 mag.

2009-12-27

[] Nova Eri 2009 (=KT Eri) : update

f:id:kanataobslog:20091228010012p:image

We update the light curve of nova Eri 2009.

Optical transient in UGC 2773 : update

f:id:kanataobslog:20091228003939p:image

We update the light curve of the optical transient of UGC 2773.

[] Type II SN 2009md : update

f:id:kanataobslog:20091228201459p:image

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

[] Type II SN 2009ls : update

f:id:kanataobslog:20091227231535p:image

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

2009-12-26

[] Type II SN 2009md : update

f:id:kanataobslog:20091226203422p:image

We update the light curve of Type II SN 2009md. The light curve still shows the rising in V,R,I-band. But, B-band light curve show the slow decline.

[] Type II SN 2009ls : update

f:id:kanataobslog:20091226181639p:image

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

2009-12-24

[] Type II SN 2009kr : update

f:id:kanataobslog:20091225004712p:image

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

2009-12-23

Optical transient in UGC 2773 : update

f:id:kanataobslog:20091223210258p:image

We update the light curve of optical transient in UGC 2773.

2009-12-22

[] Type II SN 2009kr : update

f:id:kanataobslog:20091222170519p:image

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

[] SN 2009md : update

f:id:kanataobslog:20091222165017p:image

We update the light curve of Type II SN 2009md. We can confirm the brightening in R and I bands.

Optical transient in UGC 2773 : update

f:id:kanataobslog:20091222160746p:image

We have performed the BVRcIc bands photometric observations of optical transient in UGC 2773. We confirmed that the luminosity reached the brightest comparing with those measured until previous phase.

2009-12-19

[] Type II SN 2009md : update

f:id:kanataobslog:20091219151925p:image

we update the light curve of Type II SN 2009md.

[] Type IIP SN 2009ls : update

f:id:kanataobslog:20091219151812p:image

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

[] Type II SN 2009kr : update

f:id:kanataobslog:20091219151707p:image

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

2009-12-17

[] Nova Eri 2009 : update

f:id:kanataobslog:20091217203720p:image

We update the light curve of nova Eri 2009.

[] Type Ia SN 2009kk : update

f:id:kanataobslog:20091217203305p:image

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

[] Type II SN 2009js : update

f:id:kanataobslog:20091217190106p:image

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

2009-12-09

[] OJ 49 : Rising

f:id:kanataobslog:20091210013703p:image

The object has recently been rising, and reached about V~14.8.

[] 3C 454.3 : Rising the polarization degree

f:id:kanataobslog:20091210013512p:image

Recently, the polarization degree of the object has been rising. The brightness of the object was still bright.

2009-12-08

[] Starting observations of Type II SN 2009md

f:id:kanataobslog:20091209025500p:image

We have performed the photometric observations of SN 2009md. This SN was discovered by K. Itagaki on 2009 Dec. 4 (reported in CBET 2065). The spectroscopic observation was performed by Sollerman et al. (reported in CBET 2068). The spectrum resemble a young one of a Type II SN. The magnitude was calibrated using the comparison star, whose magnitude is from the USNO B1.0 catalog. We will continue the observations of SN 2009md.

[] SN 2009ls : update

f:id:kanataobslog:20091209021717p:image

We update the light curve of SN 2009ls.

[] Type IIn SN 2009kr : update

f:id:kanataobslog:20091209021553p:image

We update the light curve of Type IIn SN 2009kr.

Optical transient in UGC 2773 : update

f:id:kanataobslog:20091209021350p:image

We update the light curve of optical transient in UGC 2773.

[] 3C 454.3 : Update the data

f:id:kanataobslog:20091209002202p:image

We update the light curve of 3C 454.3 in V band. The object has still be bright.

2009-12-07

[] Nova Eri 2009 : update

f:id:kanataobslog:20091208012112p:image

We update the light curve of nova Eri 2009. We have already reported the rebrightening of 0.1 in the B and V bands in VSNET. But, thereafter the luminosity slowly decreases with time. Such a small fluctuations of the light curve possibly indicate that the nova Eri 2009 might evolve into the transitional phase. We continue the observations of nova Eri 2009..

Optical transient in UGC 2773 : update

f:id:kanataobslog:20091208004036p:image

We update the light curve of optical transient in UGC 2773.

[] Type IIn SN 2009kr : update

f:id:kanataobslog:20091207235750p:image

We update the light curve of Type IIn SN 2009kr.

[] Type II SN 2009js : update

f:id:kanataobslog:20091207233525p:image

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

2009-12-04

[] Possible regrightening in Nova Eri 2009 !

f:id:kanataobslog:20091204234820p:image

We update the light curve of classical nova Eri 2009. The light curve showed the possible small rebrightening as 0.1 mag in B,V-band at MJD 55168.7. The color index became bluer than that measured in previous phase when the rebrightening occurred. We continue the observations of Nova Eri 2009.

[] Type IIn SN 2009kr : update

f:id:kanataobslog:20091204233249p:image

We update the light curve of Type IIn SN 2009kr.

[] Type Ia SN 2009kk : update

f:id:kanataobslog:20091204224713p:image

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

[] SN 2009ls : update

f:id:kanataobslog:20091204214246p:image

We update the light curve of Type II SN 2009ls. The light curve show a bit decline in all band.

2009-12-03

[] 3C 454.3 : Continue to be bright

f:id:kanataobslog:20091203194522p:image

The object continues to be bright. The recent brightness of the object was about 13.7 mag. in V band.

2009-12-02

[] Nova Eri 2009 : update

f:id:kanataobslog:20091203053230p:image

We update the light curve of nova Eri 2009.

Optical transient in UGC 2773

f:id:kanataobslog:20091203052534p:image

We update the light curve of optical transient in UGC 2773.

[] Type II SN 2009ls : update

f:id:kanataobslog:20091203050645p:image

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

[] Type IIn SN 2009kr : update

f:id:kanataobslog:20091203050214p:image

We update the light curve of Type IIn SN 2009kr.

[] Type II SN 2009js : update

f:id:kanataobslog:20091203045250p:image

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

[] OJ 287 : High state of polarization degree

f:id:kanataobslog:20091203025813p:image

The object has been bright state. The polarization degree has risen since about JD 2455150, and reached about 35%.

[] OJ 49 : High state

f:id:kanataobslog:20091203024630p:image

The figure shows the light curve of OJ 49 in V band from 31 Oct. 2008 to 1 Dec. 2009. The object has recently been brightened, and reached about 15.1 mag.

[] PKS 2155-304 : Gradually brightening

f:id:kanataobslog:20091203023922p:image

The object was faint in JD 2455100. The object has been brightened since about JD 2455130. The polarization degree of the object in V band has not been higher than 10%, yet.

2009-12-01

[] SN 2009ls : update

f:id:kanataobslog:20091202041844p:image

We update the light curve of Type II SN 2009ls. The object still shows the slowly rising in the BVRI-band light curves.

[] Start of the observations of classical nova Eri 2009

f:id:kanataobslog:20091202035512p:image

We started the photometric observations of classical novae Eri 2009, using our observational instrument KANATA/HOWPol. We show the multi color light curve of the optical region in the above figure. The light curves show the fast decline rate like very fast nova. It would be consistent with the those derived from the typical light curve of a He/N nova.

[] Type Ia SN 2009ig : update

f:id:kanataobslog:20091202012145p:image

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