From: Rachel G. (gibbo@panisse.lbl.gov)
Date: Thu Mar 11 2004 - 10:55:37 PST
Hi,
Sure. Will send it, and the SuF02-060 ACS spectrum
along shortly.
Rachel
On 11 Mar 2004, Chris Lidman wrote:
> Hi Rachel, Vallery,
> Could either of you provide Andy with the ACS spectrum of SuF02-012
> together with an error spectrum. It might be interesting to combine
> the ACS/VLT/Subaru spectra into a single spectrum.
>
> Does anybody know who reduced the ESI data on SuF02-012?
>
> Cheers, Chris.
>
> On Wed, 2004-03-10 at 13:37, Chris Lidman wrote:
> > Hi Andy,
> > Thanks for the plot.
> >
> > The Subaru data is available from http://www.sc.eso.org/~clidman/#L2742
> >
> > I weighted the VLT and Subaru spectra (using the error
> > spectra) before combining them. In principle, one could add the ESI and
> > ACS data as well if the the error spectra for these supernova are
> > available. The ACS data appear to be in good agreement with
> > the VLT and Subaru data. I know very little about the ESI
> > data. You might have to ask Rachel, Vallery and Greg about the
> > ACS/ESI data.
> >
> > Cheers, Chris
> >
> >
> >
> >
> >
> >
> > On Wed, 2004-03-10 at 11:52, Andy Howell wrote:
> > > You are right -- I attached the wrong plot! Here is the correct one.
> > > The ACS plot looks pretty good.
> > >
> > > Your first mail said that it was a combined Subaru and VLT plot. I didn't
> > > even know there was Subaru data on this one. According to the
> > > spectroscopy web page we have ESI data as well.
> > >
> > > Any chance you could make a combined ESI, FORS1, Subaru, ACS spectrum,
> > > maybe combining weighted by the errors? I think Peter has a program to
> > > do such a thing. If not, if all of these have error spectra, I could
> > > write something to do the rebinning and combination -- I have most of the
> > > framework already for my program.
> > >
> > > -Andy
> > >
> > > On 10 Mar 2004, Chris Lidman wrote:
> > >
> > > > Hi Andy,
> > > > Thanks for the plots. The first one seems to be a plot
> > > > of SuF02-002. Perhaps, you attached the wrong PostScript file.
> > > >
> > > > I've cc'ed this e-mail to Rachel and Vallery as both have been
> > > > involved in the reduction of the ACS data on this elusive candidate.
> > > >
> > > > I attach a comparison plot of the VLT/ACS data that was sent to me
> > > > by Vallery. The ACS data also show a dip at ~9200 Angstroms.
> > > > If this is Si4000, then this might point to a type Ia at z=1.26.
> > > >
> > > > Cheers, Chris.
> > > >
> > > > On Tue, 2004-03-09 at 21:46, Andy Howell wrote:
> > > > > Chris,
> > > > > This spectrum is better! I get z ~ 1.26, or z ~ 1.02 (see attached). I
> > > > > prefer z=1.02.
> > > > >
> > > > > -Andy
> > > > >
> > > > > On 8 Mar 2004, Chris Lidman wrote:
> > > > >
> > > > > > Hi Andy,
> > > > > > I've combined the Subaru and VLT spectra of SuF02-012 into a
> > > > > > single spectrum. The spectrum and the associated error spectrum are
> > > > > > available at
> > > > > >
> > > > > > http://www.sc.eso.org/~clidman/
> > > > > >
> > > > > > This candidate has been placed at various redshifts, anywhere from
> > > > > > z=0.9 to z=1.6. The wiggles in the combined spectrum are more
> > > > > > pronounced, but finding a redshift will be hard.
> > > > > >
> > > > > > Cheers, Chris.
> > > > > >
> > > >
> > >
> >
> >
>
This archive was generated by hypermail 2.1.4 : Thu Mar 11 2004 - 10:56:08 PST