ChromaStar

Star inputs:

Surface temperature, T_surf
(3000 - 50000) K)

K
Log₁₀ surface gravity, log(g)
(0.0 - 5.5 cm s^-2 = dynes g^-1)

Mass
(0.1 - 20.0 M_Sun)

M_Sun
Metal content
(log₁₀ 0.001 - 10.0 x solar)

κ_Fudge log₁₀ mass extinction (-2.0 - 2.0 log cm² g^-1)
[He/Fe] (-1 - 1)
[C/O] (-2 - 2)
[α/Fe] (-0.5 - 0.5)

Stellar outputs

Planetary inputs:

Affects Habitable zone and Transit light curve

Surface pressure
(0.6 - 22000 kPa)

kPa
Greenhouse effect, ΔT
(-200 - +600 K)

K
Albedo (0.0 - 0.95)

R_Orbit (AU) (0.01 - 50)

R_Planet (R_Earth) (0.1 - 20)

i_Rot (0 - 90 ^o)
Organic solvent
Water Methane Ammonia Carbon dioxide

Planetary outputs

Modeling realism vs performance

ONLY update spectral line
No. HSE-EOS-Opac iters
No. Pe-IonEquil-MolecEquil iters
TiO bands (C³Δ-X³Δ, c¹Φ-a¹Δ, A³Φ-X³Δ)

2-level atom: Spectral line parameters

Show 2-level atom plots

Line center wavelength, λ₀ (350 - 1000 nm)

Line strength:

A₁₂ Number density (2.0 - 11.0)
Log₁₀ Oscillator strength, log f , (-6.0 - +1.0)
Ionization stage
Stage I ground ionization E, χ_I (eV ) (4.0 - 25.0)
Stage II ground ionization E, χ_II( eV ) (5.0 - 55.0)
Stage III ground ionization E, χ_III( eV ) (5.0 - 55.0)
Stage IV ground ionization E, χ_IV( eV ) (5.0 - 55.0)
Excitation E, χ_l ( eV ) (0 - χ_I)
Stage I ground statistical wght, g₁ (unitless) (1 - 100)
Stage II ground statistical wght, g₂ (unitless) (1 - 100)
Stage III ground statistical wght, g₃ (unitless) (1 - 100)
Stage IV ground statistical wght, g₄ (unitless) (1 - 100)
Lower E-level statistical wght, g_L (unitless) (1 - 100)

Line width:

Microturbulence, ξ _T , (0.0 - 4.0 km s^-1)
Particle mass (1 - 60 amu)
Log₁₀ Broadening enhancement, γ_Extra (0.0 - 1.0)
v_Macro (0 - 8 km s^-1)
v_Rot (0 - 20 km s^-1)
i_Rot (0 - 90 ^o)

λ (270 - 2550 nm) σ (0.01 - 10 nm)

ChromaStar (formerly "GrayStar")