useful: Useful Constants

In increasechief/chromastar: Pedagogical Stellar Atmposhere and Spectrum Modelling of Stars

Description

Linear and logarithmic physical constant and conversion factors with units.

Usage

useful["x"]

Arguments

x	Name of numerical constant to return

Details

Used throughout chromastar to complete stellar calculations.

Value

"c"	Light speed in vaccum (cm/s)
"sigma"	Stefan-Boltzman constant (ergs/s/cm^2/K^4)
"K"	Boltzmann constant (ergs/K)
"H"	Planck's constant (ergs/s)
"ee"	Fundamental charge unit in statcoulombs (cgs)
"mE"	Electron mass (g)
"GConst"	Newton's gravitational constant (cgs)
"amu"	Conversion factor: tomic mass unit in g
"eV"	Conversion factor: eV in ergs
"rSun"	Conversion factor: solar radii to cm
"mSun"	Conversion factor: solar mass to g
"lSun"	Conversion factor: solar bolometric luminosities to (ergs/s)
"logC"	Natural log fundamental constant for: "c"
"logSigma"	Natural log fundamental constant for: "sigma"
"logK"	Natural log fundamental constant for: "K"
"logH"	Natural log fundamental constant for: "H"
"logEe"	Natural log fundamental constant for: "ee"
"logMe"	Natural log fundamental constant for: "mE"
"logGConst"	Natural log fundamental constant for: "GConst"
"logAmu"	Natural log fundamental constant for: "amu"
"logEv"	Natural log fundamental constant for: "eV"
"logRSun"	Natural log fundamental constant for: "rSun"
"logMSun"	Natural log fundamental constant for: "mSun"
"logLSun"	Natural log fundamental constant for: "lSun"

Author(s)

Oliver Dechant

References

Dr. Ian Short (2017). ChromaStarPy, Useful.py

Examples

#Not run
useful["c"]
> 2.9979249e10

increasechief/chromastar documentation built on May 14, 2019, 5:14 a.m.