Comments (3)
bd-j
commented on August 16, 2024
Hi @pzyao, it is not possible to use fsps.StellarPopulation().isochrones() with the BPASS models, precisely because for these models FSPS only has access to the integrated SSP spectra, not individual stars along an isochrone. More generally the concept of a traditional isochrone is not quite appropriate for BPASS models since two stars of the same mass and age can be in different locations on the HR diagram depending on the (distribution of) binary properties.
But isochrones() should probably give a more informative error message when BPASS is being used.
The "COMPSP WARNING" is due to check in FSPS that is not tailored correctly for BPASS models. It can be safely ignored, but the check should be updated in FSPS.
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pzyao
commented on August 16, 2024
I see! That's unfortunate, but thank you for answering my question.
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bd-j
commented on August 16, 2024
No problem, sorry it wasn't a more useful answer!
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