[vsnet-alert 7045] Re: SN 2001ig in NGC 7424

[Hitoshi YAMAOKA <yamaoka@rc.kyushu-u.ac.jp>]

Dear SN watchers,

I wrote in [vsnet-campaign-sn 295]:

>  The spectrum taken at Las Campanas Observatory shows it is in the
>very early phase; it shows very blue continuum with very broad and
>largely blueshifted absorption features.  The CfA team reports the
>provisional classification as type II/IIb, but further spectroscopy
>is needed to confirm.

And also in [vsnet-campaign-sn 303]:

># SN 2001ig goes quite bright (now mag 13).  Its spectrum (on Dec.
># 16.1) resembles to SN IIb 1993J but much bluer and more rapidly
># expanding.   

IAUC 7793 informed that the spectrum of this SN IIb is now (Jan. 13.0)
making a transition from type II to type Ib/c-like one.  The expansion
velocity is quite larger and the luminosity seems brighter (if it is
further than 10Mpc) than the typical SN IIb 1993J on the similar phase.  

Sincerely Yours,
Hitoshi Yamaoka, Kyushu Univ., Japan
yamaoka@rc.kyushu-u.ac.jp

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