Sentences with phrase «stellar atmospheres»

The ability to accurately determine the rate of this H - 17O fusion reaction provides nuclear physicists with another key puzzle piece, alongside direct observations of oxygen elemental and isotopic abundances in stellar atmospheres and in primitive meteorites, to zero in on complete and accurate models of stars.

For all too long the theorists have depended on GHG theories based on a model of stellar atmospheres with an infinite depth.

Ongoing radio observations (SMA, JCMT, VLA) of Sirius A are being used to set an observationally determined standard for stellar atmosphere modeling and debris disk studies around A stars, as well as to take the first step toward characterizing potential intrinsic uncertainty in stellar emission at these wavelengths.

It is suitable for stellar atmospheres where Kirchhoff's Law applies because there emission is equal to absorption.

This new information contradicts long - held ideas that such stellar atmospheres are more uniform, and may resolve questions about how the star's atmosphere attains its enormous size as well as how dust and gas is driven away from the star.

The properties of the ionizing star were derived using state - of - the - art stellar atmosphere models.

One is to acknowledge that calculation of radiation transport through a partially opaque atmosphere is one of those problems that seems easy until you try to write down the equations, and then you find it's a monster — the great mathematical physicist S. Chandrasekhar spent years working on it and wrote a book full of equations on stellar atmospheres that I think hardly anyone in atmospheric physics even tries to read.

These lightweight nuclei are probably produced by the breakdown, or spallation, of heavier elements, such as iron and magnesium, by high - energy particles in stellar atmospheres or in the early stages of star formation.

«We simultaneously relaxed two key physical assumptions in the modeling of stellar atmospheres; one - dimensional hydrostatic and local thermodynamic equilibrium,» Lind said.

In 1970, Bolton was the first to develop a computer model for stellar atmospheres that was able to generate large regions of the modeled spectrum with enough precision to allow comparison with the spectra from real stars.

This talk will highlight the effort to characterize stellar atmospheres through a project known as MESAS (Measuring the Emission of Stellar Atmospheres at Submillimeter / millimeter wavelengths) which is imperative to the success of current and future debris disk studies.

High - resolution soft X-ray spectroscopy offers particularly useful observations that can provide information about the evolution of large - scale structure in the universe, conditions near black holes, stellar atmospheres, and more.

Among the heavier elements and molecules detected in its stellar atmosphere have been iron (Fe - 0.5) and CN.

Models of stellar atmospheres and discs are used to estimate the amount of debris around these stars.

The successful applicant will work with Prof. Dr. Jörg Büchner and Dr. Patricio Muñoz on kinetic simulations of electron acceleration by magnetic reconnection in stellar atmospheres to be verified by observed solar type - III radio bursts.

Shown here are the star and infalling planet - which forms a comet - like tail as it crashes into the stellar atmosphere - from the vantage point of a moon orbiting a second planet.

There's a familiarity to the material that's especially pronounced in the movie's opening half hour, as writer / director Braff stresses Aidan's myriad of problems at home - with Braff's decision to emphasize certain less - than - engrossing elements perpetuating the movie's watchable yet far - from - stellar atmosphere (ie it's difficult, for example, to work up much interest in or enthusiasm for Grace and Tucker's continuing school - related difficulties).

Along with some new music tracks, SJ manages to retain its stellar atmosphere.

Poor graphics, stellar atmosphere.

While somewhat antiquated in its controls and visuals, Hyakki Castle is a strange game that uses its stellar atmosphere and exceptional enemy...

In stellar atmospheres, where, within a relatively short distance from the surface of a star the optical depth grows tremendously, this could be a reasonable assumption, and Eq.