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  1. DRP 2-D Pipeline
  2. PIPE2D-538

Stellar typing using broad band photometries

    Details

    • Type: Story
    • Status: Done (View Workflow)
    • Priority: Normal
    • Resolution: Done
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Sprint:
      2DDRP-2021 A

      Description

      This is a collection of stories/tasks for broad-band stellar typing. 

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          is blocked by

          Story - Created by Jira Software - do not edit or delete. Issue type for a user story. PIPE2D-539 Stellar typing with HSC broad-band data

          • Normal - Normal priorities
          • Done

          Story - Created by Jira Software - do not edit or delete. Issue type for a user story. PIPE2D-634 Stellar typing with Gaia broad-band data

          • Normal - Normal priorities
          • Done

          Story - Created by Jira Software - do not edit or delete. Issue type for a user story. PIPE2D-642 Stellar typing with SDSS broad-band data

          • Normal - Normal priorities
          • Done

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            takuji.yamashita Takuji Yamashita added a comment - - edited

            This is a figure including all the cases of broad band stellar typing using PS1, SDSS, and Gaia. The sample consists of 22 stars with no photometry problems in all the catalogs. The stars meet the crude color selection for F-stars defined in PIPE2D-383. 

            There are five cases that use a different photometry set: PS1 grizy, PS1 grizy + SDSS u-band, SDSS ugriz, SDSS griz (without u), Gaia GBpRp.

            The robust (sigma clipping) RMSs of fractional residuals of each case are about 3-4%. There is no big difference among the cases. If we add SDSS-u to PS1, we can get a bit better result. 

            The largest RMS at PS1 g-r~0.33 is due to a double peak of its probability distribution in log g. This could be improved by a spectral typing. 

             

             

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            takuji.yamashita Takuji Yamashita added a comment - - edited This is a figure including all the cases of broad band stellar typing using PS1, SDSS, and Gaia. The sample consists of 22 stars with no photometry problems in all the catalogs. The stars meet the crude color selection for F-stars defined in PIPE2D-383 .  There are five cases that use a different photometry set: PS1 grizy, PS1 grizy + SDSS u-band, SDSS ugriz, SDSS griz (without u), Gaia GBpRp. The robust (sigma clipping) RMSs of fractional residuals of each case are about 3-4%. There is no big difference among the cases. If we add SDSS-u to PS1, we can get a bit better result.  The largest RMS at PS1 g-r~0.33 is due to a double peak of its probability distribution in log g. This could be improved by a spectral typing.     
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            takuji.yamashita Takuji Yamashita added a comment -

            We can close this ticket and all of the blocking tickets. There were no concerns in 2DDRP telecons. In the future, we will revisit broad band stellar typing tasks (new tickets) to do the code implementation and to fix problems (if needed).

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            takuji.yamashita Takuji Yamashita added a comment - We can close this ticket and all of the blocking tickets. There were no concerns in 2DDRP telecons. In the future, we will revisit broad band stellar typing tasks (new tickets) to do the code implementation and to fix problems (if needed).

              People

              • Assignee:
                takuji.yamashita Takuji Yamashita
                Reporter:
                takuji.yamashita Takuji Yamashita
                Reviewers:
                hassan
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                • Created:
                  Updated:
                  Resolved: