Beethoven

Keck Data files:

Date: May 4, 2000 (UT), Epoch -9.6d, rest
Exposure time: 4 x 1200s = 4800s(?)
Data reduced by: Isobel
Weather note:
Preliminary reduction: [asc] [SN with 90n, -14d]

VLT Data files:

Date: May 12, 2000 (UT), Epoch -4.6d, rest.
Exposure time:
Data reduced by: Chris
Weather note:
Final reduction: [nonoverlapping ps comparison to 90N -7d] [overlapping ps comparison to 90N -7d] [unsmoothed fits] [unsmoothed asc]

Comments:

Isobel (preliminary): z~0.546 (OII line + type Ia like SN features). Note that this is superceded by VLT redshift below.

Andy (final): The VLT spectrum is a good fit to SN 1990N at -7d. You can see Si II 4000 on the earlier Keck spectrum (-9.6d rest). The best match (from my fitting program) to the Keck spectrum is SN 1994D at -9d, though SN 1990N at -14d is not a bad match as well. SN 1990N doesn't show Si 4000 yet, but Beethoven does. Note that there are some small differences in the (rest frame) UV, where the spectrum is dominated by iron-peak elements.

Gabriele: Page containing various fits.

Chris: VLT OII is probably best redshift: z=0.543. See email.

Chris: J -> Js transormations and Beethoven epochs. See email.


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