[vsnet-campaign-sn2002ap 23] (fwd) Re: SN 2002ap spectrum (Deng)

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

From: "Jinsong Deng" <deng@astron.s.u-tokyo.ac.jp>
Subject: Re: [vsnet-campaign-sn2002ap 20] Re: SN 2002ap spectrum
Date: Fri, 1 Feb 2002 16:19:54 +0900

I am now modelling the Jan.31 spectrum sent to
us by H. Yamaoka with a SN spectrum synthesis code, SYNOW. 
The observed broad features can only be explained 
when assuming very high expansion velocities 
for the ejecta material, like in SNe 1997ef and 1998bw. 
This in turn suggests very high explosion energy, 
higher than 1 times 10^52 ergs. So it is a hypernova.

Regards,

Jinsong Deng

----- Original Message ----- 
From: "Taichi Kato" <tkato@kusastro.kyoto-u.ac.jp>
To: <vsnet-campaign-sn2002ap@ooruri.kusastro.kyoto-u.ac.jp>
Sent: Friday, February 01, 2002 3:30 PM
Subject: [vsnet-campaign-sn2002ap 20] Re: SN 2002ap spectrum


> Re: SN 2002ap spectrum
> 
> > This information was announced on IAUC 7811, as well as other two
> > spectrum (ESO and Wise Obs.), both of which reached the same
> > conclution, i.e., SN 2002ap is a HYPERNOVA !
> 
>   I presume that the hypernova classification is based on its luminosity
> (or total energy), rather than the spectrum.  Is there any indication
> for that?  I wonder what would be the expected maximum magnitude (and when)
> of this super/hypernova.
> 
> Regards,
> Taichi Kato

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