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Hubble Space Telescope
Emission Line

The emission line is assumed to be monochromatic at the specified wavelength and redshift / velocity.

You can either:

Velocities should be given in km s-1. Note that Doppler shift calculations are fully relativistic.

Four example inputs are shown below. These are all equivalent and give the same result. The line flux is 1.2x10-14 erg cm-2 s-1, and the observed line wavelength is 5082 Angstroms.

Emission Line:

Line Flux: (erg cm-2 s-1)

Line: : (units)

Emission Line:

Line Flux: (erg cm-2 s-1)

Line: : (units)

Emission Line:

Line Flux: (erg cm-2 s-1)

Line: : (units)

Emission Line:

Line Flux: (erg cm-2 s-1)

Line: : (units)