From: clidman@eso.org
Date: Wed Apr 24 2002 - 00:00:12 PDT
Dear Colleagues,
The conditions on Paranal were not good enough for S02-032 to
be observed with ISAAC. No observations have yet been taken. There will now
be a period of technical time which will last between 3 to 4 days.
UT4 is now being used to commission NOAS-CONICA and this will last until
May 4th. For this reason FORS2 is unavailable.
What is the I band magnitude of S02-032. From that, I can work out how much exposure
time one would require to get a S/N of three, which was the S/N obtained for S02-002.
Cheers, Chris.
Ariel Goobar wrote:
> 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
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