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Release 5.0
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@ideasrule ideasrule released this 04 Feb 00:15
· 67 commits to master since this release
v5.0
cadd75e

PLATON v5 is a major release, corresponding to the version described in our second PLATON paper (submitted). If you cloned the repository before 02/02/2020, PLEASE RE-CLONE THE REPOSITORY AND DELETE THE OLD ONE, due to breaking change #2 below. The most important changes are:

Breaking changes:

  1. Removed data from repository and its history. Data is now stored elsewhere, and will be automatically downloaded on the first initialization of the transit or eclipse calculators. If you cloned the repository before 02/02/2020, PLEASE RE-CLONE THE REPOSITORY AND DELETE THE OLD ONE to avoid data corruption.
  2. run_multinest and run_emcee now return RetrievalResult object, which contains observational data, fit info (fixed parameters, fit parameters, fit priors), best fit spectrum, ancillary data for the best fit spectrum (T/P profile, abundances, stellar spectrum, unbinned best fit spectrum, unbinned stellar spectrum, unbinned correction factors, etc), and 100 randomly sampled unbinned spectra (to plot 1 sigma range). The RetrievalResult has two methods: plot_spectrum() and plot_corner()
  3. Retriever deprecated. Please use CombinedRetriever instead
  4. Removed support for Python 2.

Significant new features:

  1. Correlated k support added
  2. Buggy opacities for C2H2, C2H6, HF, N2, NO2, O2, O3, OCS have been fixed. NH3 opacity now uses the CoYuTe line list, while CH4 opacity uses Rey et al 2017
  3. H- opacity now supported, though disabled by default because it's rarely important in the temperature range we support
  4. A quench pressure is now implemented

Other improvements:

  1. BT-NextGen stellar grid replaced with BT-Settl (better for cooler stars)
  2. Enabling wavelength-dependent cross sections for MgSiO3, TiO2, and SiO2
  3. Retrieval: complex refractive index split into two components, n and log_k, so that the refractive index can be retrieved.
  4. Added wfc3_transit_offset and wfc3_eclipse_offset as retrieval parameters
  5. Can now use blackbody spectrum for star
  6. More accurate interpolation method of absorption cross sections
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