Sentences with phrase «spectral line emission»

The red color represents spectral line emission from hydrogen atoms.

Not exact matches

When hydrogen gas is heated by the ultraviolet emissions of new stars, it produces a spectral signature called the Lyman - alpha line.

Though a significant number of these astrometric matches are likely to be spurious, we sought out spectral characteristics of active stars and interacting binaries, such as hot, massive spectral types or emission lines in order to corroborate the X-ray activity and certify the authenticity of the match.

The Argus millimeter - wave camera on the GBT produces data cubes of the emission from spectral lines with high spectral and spatial resolution.

With spectral data taken in a wide frequency range, we can obtain intensity ratio of various molecular line emissions.

For example, 59 Cygni is listed as spectral type B1.5 Vnne, [34] indicating a spectrum with the general classification B1.5 V, as well as very broad absorption lines and certain emission lines.

An interesting result from this data was that no emission was detected in the Stokes I spectral line profiles during the flare, which is traditionally seen in such magnetic transient regions.

Infrared light, on the other hand, traces dust in a galaxy, and emission lines that are detected in spectral lines trace the gas clouds.

Previously classed as spectral type M4.5 e (with emission lines), the object was observed to be four times brighter than would be expected for a dim red dwarf of that type based on a revised parallax measurement of its distance from the Solar System (Ken Croswell, Science@Now, September 6, 2011).

A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from emission or absorption of light in a narrow frequency range, compared with the nearby frequencies.

We characterize the main emission lines found in the spectrum, which primarily arise from a range of components associated with Orion KL including the hot core, but... ▽ More We present the first high spectral resolution observations of Orion KL in the frequency ranges 1573.4 - 1702.8 GHz (band 6b) and 1788.4 - 1906.8 GHz (band 7b) obtained using the HIFI instrument on board the Herschel Space Observatory.

Magnetic transients have traditionally been explained as artifacts produced when flare emission contaminates the spectral line profile, leading to false reversals of the Stokes V profile.

@Vaughn https://judithcurry.com/2012/12/04/multidecadal-climate-to-within-a-millikelvin/#comment - We know quantitatively, albeit roughly, from the work of Tyndall in the 1850s the extent to which CO2 itself... blocks the passage of thermal radiation; these days we infer this much more precisely from the HITRAN tables of spectral absorption / emission lines.

We know quantitatively, albeit roughly, from the work of Tyndall in the 1850s the extent to which CO2 itself, with no feedbacks, blocks the passage of thermal radiation; these days we infer this much more precisely from the HITRAN tables of spectral absorption / emission lines.

If one were to take the model and plot a curve of emission versus wavelength rather than simply summing up the values (integrating over wavelength), it would show a spectral curve of a black body at 288.2 k with the absorption lines of the atmosphere dipping down to the point where there is a spectral curve for a lower temperature at which there is emission going on in the wavelength bands associated with ghg absorption.

Empirical evidence using spectroscopy proves that a gas does not absorb spontaneous emission from a body which is significantly cooler than it, but it does absorb (and spectral lines thus appear) when the same body is made warmer than the gas.

The Wikipedia article you pointed to is about spectral lines, and at other points in the article they note that «spectral lines» applies to both absorption and emission.