Reviewer Response

[djperrefort]

• Apply spectroscopic classifications (Estimate effeciency of classification #45)

  • How many of these ~400 SN Ia are clearly normal SN Ia?
  • How many have spectra that look more like 91bg-like SN Ia?
  • How many look like SN Ia, but could be 91bg-like at other epochs?
  • What is the FOM?
  • Choose the classification approach (i.e., band v collective v SiFTO) quantitatviely by using the FOM.

• Double check how SDSS flagged peculiar SNe and update the text accordingly.

• Clarify which SNe are classificed as peculiar by SDSS and what their classifications are. If shown in the appendix, they should be highlighted in some way.

• "After visually inspecting the light-curves of each selected target, we disregard any objects that are found to have significantly noisy light-curves, which leaves us with 15 remaining SNe": This should be a cut instead of a pure subjective decision that is not defined at all in the paper, e.g. use the median S/N or the cumulative S/N, or both.

• Objects in Appendix A should be grouped into the passed and excluded. Excluded objects should include the reason.

• "having an older average stellar age that the hosts of normal SNe Ia." -> "than the hosts"

• Please replace LSST with VRO Response: We intend to refer to the survey, not the observatory

• 2002cx-like SNe, also known as SNe Iax (Li et al. 2003;Jha et al. 2006): add more current references, this has been a topic of significant advances in the last few years.

• Change "We here " to "We here..."

• Figure 1: Remove SNeII and unknown classifications.

• Fig. 4: A few outliers are driving the axis limits, and it is hard to see the details in the central region. In particular the histograms are too small.

• Fig. 5: The blue and green line are difficult to distinguish.

• Fig. 4 caption: Clarify how "better" is defined

• Fig 4 and analysis: Clarify we consider all observed SNe, not just SNe Ia.

• "We note that three of the four SNe that were visually flagged by the SDSS SN team as potential 91bg-like objects are also labeled as 91bg-like SNe by our classifier."

  • Clarify what "visual" means. From the light curve, or spectra?
  • Fig. 6 is not annotated using open symbols like in Fig. 4
  • What does labeled as 91bg like SNe by the classifier mean? Clarify the bounds.