Re: comments on SC4

From: Robert A. Knop Jr. (robert.a.knop@vanderbilt.edu)
Date: Thu May 22 2003 - 10:11:12 PDT

  • Next message: Greg Aldering: "Re: comments on SC4"

    On Thu, May 22, 2003 at 10:04:53AM -0700, Greg Aldering wrote:
    > I think that the SNe without suitable colors should be removed from
    > Table 4. Then that table is more self-consistent, being "New Fits to
    > Perlmutter (1999) SNe used in this paper". I think this is necessary
    > because, e.g., the fit to 1997S in this paper probably is not
    > superior to the fit given in P99, whereas we think the fits are
    > better for others with good colors. These fits were not necessary to
    > *make* the cut on color error, since the fits from P99 were suitable
    > for that. So, there is no need to introduce them in the table.

    OK, will do. I'll change the text a little as well to indicate that.
    (That's just a small change.)

    >
    > Has the issue of 97ai been resolved? It disagrees badly with P99. Are
    > we just going to ignore that difference? (Note - this could be handled
    > later.)

    Not at the moment. Let's ignore it for now, resolve it while the
    referee looks at the paper.

    > p20, figure 3: If the SNe without colors are removed from consideration, as
    > I advocated above, then the dotted tail to negative E(B-V) is
    > eliminated; that is, the P99 histogram has to be redone. This
    > has the benefit that the horizontal scale can be improved to
    > span only -0.75 to 0.75.

    Will do; easy enough.

    > p21 : Help me out here: at the start of section 4.1 you describe
    > K-corrected rest-frame B-band peak magnitudes. But, aren't they also
    > stretch-corrected? If not, why not?

    You mean in the Hubble diagram? They are not stretch corrected, no.
    Reason: because that's the way I did it. (I.e. no good reason.) I
    could do that and redo the Hubble diagrams. I would also then add that
    to the text.

    I think there is value in showing the "plain" magnitudes, although not
    enough to add another Hubble diagram (with and without stretch
    corrections).

    -Rob

    -- 
    --Prof. Robert Knop
      Department of Physics & Astronomy, Vanderbilt University
      robert.a.knop@vanderbilt.edu
    


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