Basics

• Get Started
• HMC-NUTS Retrieval of a Methane High-Resolution Emission Spectrum

Applications

Tips for Real Analysis

• Fitting the telluric line model
• Reverse modeling of Methane emission spectrum using precomputed spectrum grids
• On the Device Memory Use
• Optimal Elower Maximum

Transmission Spectra

• Computes Transmission Spectra

🪐 An example of HMC-NUTS for actual hot Saturn (JWST/ERS, NIRSPEC/G395H) can be found here .

Reflection Spectrum

• Foward Modeling of Jupiter-like Ammonia Clouds and Its Reflection Spectrum
• Modeling a High Resolution Reflection Spectrum

🪐 An example of HMC-NUTS for actual Jupiter reflection spectrum can be found here .

Molecular/Atomic/Continuum Databases

• Filtering Lines by Quantum Number
• R-branch and P-branch of CO
• Quatum states of Carbon Monoxide and Fortrat Diagram
• CIA coefficient
• Forward modeling of the emission spectrum using Fe I line list from Kurucz

Multi Molecule/Segments Mdb and Opa Handler

• Multi Molecule Handler

Manual Settings of Opacity (not using opa)

You do not need opa nor art to compute opacity and spectra, if you want.

Cross Section using Various Opacity Calculators

• Computing CO cross section using HITRAN (opacity calculator = LPF)
• Cross Section for Many Lines using PreMODIT
• Comparing HITEMP and ExoMol

Others

Scattering

• Rayleigh scattering

Micro Chemical/Physical Processes

• Ackerman and Marley Cloud Model
• Terminal velocity of Cloud particles

Macro Physical Processes

• Rigid Stellar Rotation and Gaussian Convolution

Others

• Using FastChem2 to calculate the chemical abundances
• Voigt profile
• Cross section computation using the Discrete Integral Transform (DIT) for rapid spectral synthesis
• Cross Section for Many Lines using MODIT