line profile

These distortions will move across spectral line profiles due to the stellar rotation.

This resulting line profile is known as a Doppler profile.

For a fully developed turbulence, the resulting line profile is generally very difficult to distinguish from the thermal one.

It can create density histograms and line profile plots.

All normalized line profiles can be considered to be probability distributions.

A correlation between the variations in the asymmetry of the spectral line profile and the radial velocity has also been found.

There he presented his thesis The calculation of atmospheric models and line profiles for the analysis of stellar spectra.

In 1979, examination of the spectrum of this star found "moving bumps" in its helium line profiles.

If the velocity in lower, spatial resolution is degraded, but variations in the line profile can still give information of areas with higher velocities.

The Rietveld method uses a least squares approach to refine a theoretical line profile until it matches the measured profile.

Spectral line profiles of Tau Ceti are extremely narrow, indicating low turbulence and observed rotation.

Buckeye Pipe Line profile at Yahoo Finance.

The form of the line profile is determined by the functional form of the perturbing force with respect to distance from the perturbing particle.

Precise radial velocity measurements have shown variations in the stellar radial velocities and spectral line profiles.

Assuming each effect is independent, the observed line profile is a convolution of the line profiles of each mechanism.

Because they are enlarged compared to main-sequence and giant stars of the same spectral type, they have lower surface gravities and changes can be observed in their line profiles.

Then it will move across the line profile and increase in angular size since the spot is seen more face-on, the maximum is when the spot passes the star's meridian.

"Broken line profiles and non-straight angles, key elements of an international lineage organicism rediscovered in the 1960s", are " brilliantly integrated in this perfect example of "total design"."

Features include object tracking with position, velocity and acceleration overlays and graphs, special effect filters, multiple reference frames, calibration points and line profiles for analysis of spectra and interference patterns.

Pound and Rebka were able to scan across the very narrow line profile by varying the source velocity and in this way achieved a large gain in sensitivity for locating the line centre.

If the spot is located at high latitude it is possible that it will always be seen, in which case the distortion in the line profile will move back and forth and only the amount of distortion will change.

Asymmetric absorption line profiles are the result of the superposition of multiple absorption lines, each corresponding to the same atomic transition (for example the "K" line of calcium), but occurring in interstellar clouds with different radial velocities.

It was a short duration outburst in IRAS 18566 + 0408 that produced a line profile consistent with the superposition of two Gaussian components, which leads to the belief that an event outside the maser gas triggered simultaneous flares at two different locations.

P Cygni gives its name to a type of spectroscopic feature called a P Cygni profile, where the presence of both absorption and emission in the spectral line profile indicate the existence of a gaseous envelope expanding away from the star.

His research on quasars has included development of the relativistic blast wave model for variability, introduction of reverberation mapping to analyze variable emission line profiles, the two-phase model for quasar emission line regions, and the development of the theory of coronae and winds from accretion disks.