From: Ariel Goobar (ariel@physto.se)
Date: Tue Apr 23 2002 - 05:31:02 PDT
Here is another reason to get a good spectrum of S02-032:
The apparent "over"-brightness of S02-032 may be related
to what Rob has observing for the previous batch HST SNe, what he
called "UV-enhancement". At z=1.08 the I-band filter is about
1/2 U + 1/2 B. Rob was observing quite high fluxes from the
restframe U part. A good spectrum of > 600 nm might be very
useful to be able to tell where the flux is coming from.
It may well be that this guy is not particularly bright in J-band
in spite of the high flux in I.
Ariel
On Mon, 22 Apr 2002 DAHowell@lbl.gov wrote:
> I think that we really must get more on this SN if we are going to use
> it. The fact that it is so bright worries me. We will never have
> another shot, so it is now or never. If it has brightened, it may be
> easier to get spectroscopy now anyway.
>
> -Andy
>
> ----- Original Message -----
> From: Lifan Wang <lifan@panisse.lbl.gov>
> Date: Monday, April 22, 2002 7:08 pm
> Subject: Re: confirm S02-032?
>
> > > From owner-deepnews@listserv.lbl.gov Mon Apr 22 18:56:56 2002
> > > X-Authentication-Warning: listserv.lbl.gov: majordom set sender
> > to owner-deepnews@listserv.lbl.gov using -f
> > > X-Sender: ihook@vela
> > > To: Greg Aldering <aldering@panisse.lbl.gov>
> > > cc: deepnews@lbl.gov
> > > Subject: Re: confirm S02-032?
> > > MIME-Version: 1.0
> > > Content-Type: TEXT/PLAIN; charset=US-ASCII
> > > Sender: owner-deepnews@lbl.gov
> > >
> > >
> > > Hi,
> > >
> > > I would support that if its possible. The Subaru spectrum was
> > quite low
> > > signal to noise - but wouldn't it take more than an hour with
> > VLT to
> > > improve on it?
> >
> > Of the three half hour SUBARU exposures, only one is showing
> > sufficient signal
> > to be useful. One hour exposure with good seeing could be sufficient.
> >
> > >
> > > Isobel.
> > >
> > >
> > > On Mon, 22 Apr 2002, Greg Aldering wrote:
> > >
> > > > Hi Chris,
> > > >
> > > > We were wondering whether there is some value in getting a better
> > > > confirmation spectrum of S02-032 with FORS2. Is this possible?
> > > > Does anyone else have an opinion on spending an hour on this?
> > > >
> > > > Cheers,
> > > >
> > > > Greg, Saul, Tony
> > > >
> > > >
> > >
> >
>
-- ___________________________________________________________________ Ariel Goobar (ariel@physto.se) FYSIKUM, Stockholm University Stockholm Center for Physics, Astronomy & Biotechnology tel: +46 8 55378659
This archive was generated by hypermail 2.1.4 : Tue Apr 23 2002 - 05:35:07 PDT