Astrophysics (index)

Continuous Absorption

(the absorption of a whole section of a spectrum)

Continuous Absorption is the absorption of more than mere individual Spectral Lines: Absorption over a range of Wavelengths. It can be simulated if the resolution of an instrument is such that the individual Absorption Lines of a substance cannot be distinguished, thus only showing some reduction in the Electromagnetic Radiation over a range of wavelengths (Line Blanketing). Some processes produce it at the source, e.g., within the emitting star, such as Photoionization, which can reduce the Intensity at all wavelengths corresponding to photons of sufficient energy to ionize the material.

Band Absorption refers to absorption over a limited range of wavelengths, which can be referred to as an Absorption Band.