[vsnet-campaign-sn2002ap 46] Re: SN 2002ap spectrum

[Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>]

Re: SN 2002ap spectrum

> Another feature of hypernovae is a very (up to 30000 km/s or more)
> expansion velocity, derived both from the width and the blueshift of
> the absorption features (if identified).

   Wouldn't that be an observational characteristic of "some" hypernovae,
rather than the definition?  If the maximum luminosity of SN 2002ap eventually
turns out to be comparable to a normal SN, should one call it a hypernova
from this spectroscopic diagnosis?  Or one will not have to think of
such a possibility?

Regards,
Taichi Kato

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