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  1. LSST Verification and Validation
  2. LVV-10985

Separate stars and galaxies using photometry and morphology

    Details

    • Type: Validation
    • Status: Not Covered
    • Priority: Undefined
    • Resolution: Unresolved
    • Component/s: DM
    • Labels:
    • Success Criteria:
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      This is not meant to test the scientific accuracy of the results, but rather the ability to undertake such studies with the LSP. It will be considered successful if the steps can be completed, and produce "reasonable" results.

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      This is not meant to test the scientific accuracy of the results, but rather the  ability  to undertake such studies with the LSP. It will be considered successful if the steps can be completed, and produce "reasonable" results.
    • Verification Method:
      Analysis

      Description

      2. A user can separate stars and galaxies from photometric magnitudes and morphology. [DES]
      i) Plot separate color-color diagrams for extendedness = 0 and high extendedness objects. Use tools such as a 2D histogram and a contour map to compare the distributions from overlaid datasets.
      ii) Overlay a predict stellar locus from a reference model. E.g., Davenport 2014.
      iii) Compare how the galaxies and stars are distributed at different values of Galactic (l, b). See if the galaxy contours or stellar locus move. Compare the degree to which they move together and separately.

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            • Assignee:
              jcarlin Jeffrey Carlin
              Reporter:
              jcarlin Jeffrey Carlin
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              • Created:
                Updated:

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