Re: question for HST paper

From: Greg Aldering (aldering@panisse.lbl.gov)
Date: Wed Apr 30 2003 - 18:10:49 PDT

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    Hi Andy,

    I am looking at the spectral fits to 98104 on your website. I don't see a
    relation between your spectrum and Isobel's. Am I even looking at the
    right thing? (Yours is labeled "Observed: 98104cc_comb.Ic.asc" and
    Isobel's is labeled "98104 (Keck) : 98104cc_comb.asc". Yours is a
    power law and Isobel's have plenty of wriggles.

    >Due to the E's 4000A break, you subtrack off more light blueward of 4000A
    >than redward, and this can mimic Ca from the SN.

    No. The effect of subtracting an elliptical is to decrease the strength
    of Ca - unless you let the elliptical go negative! But I do agree that
    9878 isn't convincing.

    - Greg

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