Hatena::Groupkanatatmp

KANATA ObsLog

2010-08-01

[] Spectroscopy of V1280 Sco : update

f:id:kanataobslog:20100802013718p:image

We performed the spectroscopy of the extremely slow nova V1280 Sco. The spectrum shows the strong emission line of H-alpha. The emission line still forms the P Cyg profile with the asymmetric profile. The absorption lines reached at 2300km/s. HeI also shows the P Cyg profile with the absorptions, which reached at the 1400km/s. These characteristics indicate that the nova atmosphere still forms optically-thin winds above the optically-thick photosphere. On the other hand, the spectra exhibit the forbidden line, which indicate that a part of the expanding shell become the very optically-thin.