ChromaStarAtlas

OpenStars approximate stellar atmosphere and spectrum synthesis modeling in Java.
User interface in JavaScript + HTML5. Hover for tips. Click for data coordinates. Ctrl +/- to zoom

Optional plots: Spectrum synthesis Atmosphere Chem Eq (if Atmos plots ON) Radiation field

Star inputs:

Surface temperature, Tsurf
(3000 - 50000) K)

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


Mass
(0.1 - 20.0 MSun)


Metal content
(log10 0.001 - 10.0 x solar)

Microturbulence, ξ T , (0.0 - 8.0 km s-1)
κFudge log10 mass extinction (-2.0 - 2.0 log cm2 g-1)

Stellar outputs

Planetary inputs:

Affects Habitable zone and Transit light curve

Surf pressure
(0.6 - 22000 kPa)

Greenhouse effect, ΔT
(-200 - +600 K)

Albedo (0.0 - 0.95)

ROrbit (AU) (0.01 - 50)

RPlanet (REarth) (0.1 - 20)

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

Planetary outputs

Spectrum parameters

λStart (260 - λStop nm)

λStop (λStart - 2600 nm)

Labeled species

Narrow band Gaussian filter λ (270 - 2550 nm) σ (0.01 - 10 nm)
Detailed print-out (below graphs): None Spectrum synthesis Atmospheric structure Flux spectral energy distribution (SED) Specific intensity distribution Limb darkening coeffs Partial pressures A12 abundances Transit light curves JSON string