[supernova] Possible SN in NGC 3613 : Type Identification kanataobslog
[f:id:kanataobslog:20110731195921p:image] We performed the spectroscopic observations of the possible SN in NGC 3613 on Jul 30.6. The spectrum exhibits the SII W-shape feature, SiII 5972, SiII 6355, OI 7774 and CaII IR triplet. The line velocity of SiII63 ...
[Nova] Nova Sgr 2011 : update kanataobslog
[f:id:kanataobslog:20110223030832p:image] We update the light curve of nova Sgr 2011. The light curves show the rebrightening in the V, J, H and Ks bands. This indicates that the decline and rebrightening could not be caused by the dust formation.
[dwarf nova] J2138+26: gradually fading kanataobslog
[f:id:kanataobslog:20100603183051p:image:left] After the rapid fading stopped, the object is now gradually fading. The V-J color index is ~1.2, close to that observed in GW Lib just after its superoutburst. J2138+26 is now very red.
[supernova] Type II SN 2009js : update kanataobslog
[f:id:kanataobslog:20100110183945p:image] We update the light curve of Type II SN 2009js. The light curve would show of the rapid decreasing of the luminosity, which suggest that the recombinations of the hydrogen layer should end. Assuming SN 2009js of a ...
[XRB] V4641 Sgr active kanataobslog
[f:id:kanataobslog:20081016200603p:image] [f:id:kanataobslog:20081016200602p:image] As noticed by Dr. Yamaoka in [http://ooruri.kusastro.kyoto-u.ac.jp/pipermail/vsnet-alert/2008-October/002189.html:title=vsnet-alert 10580], the black hole X-ray binary, ...