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roygomel / EllipsoidalAmplitudes

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When the logg is 3.65, the a1c is nan #1

Open tpos8 opened 2 days ago

tpos8 commented 2 days ago

hi, I want to use your model to fit my observation data, but when I use the logg to input the code fitting, the fitting always failed . So that, I checked the model's output, discovering the a1c is nan

roygomel commented 1 day ago

Hi,

This is correct. The reason is that these amplitudes were obtained only for main-sequence primaries. I guess that a value of logg = 3.65 represents a subgiant right? Since we used PHOEBE for a limited GRID of main-sequence stars, I can advise two options:

  1. If your fill-out factor << 1, then you can use the well-known Morris & Naftilan approximation.
  2. You could try taking the A1C value which is closest to your stellar parameters.

Best, Roy

On Mon, Nov 18, 2024 at 3:38 AM Cosmic @.***> wrote:

hi, I want to use your model to fit my observation data, but when I use the logg to input the code fitting, the fitting always failed . So that, I checked the model's output, discovering the a1c is nan

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tpos8 commented 5 minutes ago

Hi, Yeah, you are right, but I am trying to use your model to fit the subgiant binary system.