Re: Do we have any more examples of Adam's I band magnitudes? This is alittle too close to...

From: Vitaliy Fadeyev (VAFadeyev@lbl.gov)
Date: Mon Apr 05 2004 - 21:55:15 PDT

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    According to my notes, that's all Adam said about I-band mags
    at the time of our phone conference. There was another candidate
    they did not measured I-band mag for at that time.

    vitaliy

    Saul Perlmutter wrote:

    > Does anybody have any more examples of Adam's I band magnitudes? This
    > I band difference between us and Adam for the two examples shown is a
    > little too close to the difference between Type Ia and II for comfort.
    >
    > Greg Aldering wrote:
    >
    > >Vitaliy and I looked at whether the zeropoint corrections just sent
    > >by Rob bring our photometry into agreement with that of Adam. Here
    > >is a comparison table
    > >
    > > Zorig Zapcor Zcorr ZAdam Diff | Iorig Iapcor Icorr IAdam Diff
    > > ----------------------------------------------------------------------------
    > > -076 24.52 0.57 25.09 25.1 0.0 | 25.96 0.59 26.55 26.8 -0.3
    > > -177 24.61 0.81 25.42 25.2 0.2 | 25.52 0.72 26.24 26.65 -0.41
    > > -096 24.90 0.73 25.63 25.5 0.1 |
    > >
    > >Look at the "Diff" columns; the corrections look good in Z-band. In
    > >I-band there is still a hint of a systematic (note the I-band magnitude
    > >uncertainties are 0.2-0.3 mag, so this is just a hint).
    > >
    > >- G & V
    > >
    > >

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