emission lines


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Related to emission lines: line spectrum, Absorption lines, Emission spectroscopy

emission lines

See emission spectrum.

emission lines

[i′mish·ən ‚līnz]
(spectroscopy)
Spectral lines resulting from emission of electromagnetic radiation by atoms, ions, or molecules during changes from excited states to states of lower energy.
References in periodicals archive ?
The presence of emission lines from highly ionized atoms in the E-corona appeared to be making the opposite point, the corona seemed to be much warmer than the photosphere.
He showed how the very sharp emission lines enable Doppler motion within the auroral ovals to be mapped.
An elementary observation constitutes the focus of this work: the intensity of ultraviolet and X-ray emission lines increases dramatically, as observations are moved from the center of the solar disk to the limb of the Sun.
Emission lines show how light interacts with matter, and in this case, they helped the astronomers understand the relationship between the stars and gas in these galaxies.
The spectrum revealed the symbiotic nature of the object with both emission lines and TiO lines showing strongly.
Differences in width not only exist between K, L, and M emission lines of similar energy, but also exist between the multiple lines of the L series of the same element.
Steidel of the California Institute of Technology in Pasadena, Dickinson, and their colleagues found that the spread of velocities within four of the five galaxies was relatively small, as indicated by their narrow emission lines.
Brinckmann asserted that a typical characteristic of a quasar is that the light has broad emission lines from gas close to the black hole.
Rather than limit their sample to certain galaxy types, the researchers instead looked at all galaxies with emission lines bright enough to be used for determining internal motions.
Prominent hydrogen Balmer emission lines and many weaker FeII emission lines are visible showing that the runaway thermonuclear explosion on the surface of the white dwarf in this cataclysmic variable created elements as far up the periodic table as iron.
A typical characteristic of a quasar is that the light has broad emission lines from gas close to the black hole.

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