Emission lines in the long period Cepeheid [script l] Carinae

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National Aeronautics and Space Administration, National Technical Information Service, distributor , [Washington, DC, Springfield, Va
Cepheids., Emission-line gala
StatementErika Bo hm-Vitense and Stanley G. Love.
Series[NASA contractor report] -- NASA CR-190853., NASA contractor report -- NASA CR-190853.
ContributionsLove, Stanley G., United States. National Aeronautics and Space Administration.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL14689619M

Get this from a library. Emission lines in the long period Cepeheid [script l] Carinae. [E Böhm-Vitense; Stanley G Love; United States.

National Aeronautics and Space Administration.]. Eta Carinae (η Carinae, abbreviated to η Car), formerly known as Eta Argus, is a stellar system containing at least two stars with a combined luminosity greater than five million times that of the Sun, located around 7, light-years (2, parsecs) distant in the constellation usly a 4th-magnitude star, it brightened in to become brighter than Rigel, marking the start of Constellation: Carina.

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When acquiring a spectrum of an astronomical object, astronomers rely upon spectral lines to determine a myriad of physical properties, such as composition, temperature, ionization state, velocity, redshift and more. Measurements of the asymmetry of the emission peaks in the core of the Ca ii H line for giant stars are reported.

The asymmetry is quantified with the parameter V/R, defined as the ratio between the maximum number of counts in the blueward peak and the redward peak of the emission Ca ii H and K emission lines probe the differential motion of certain chromospheric layers Cited by: 1.

Abstract. Profiles of the H and K lines of Mg II and the K line of Ca II are computed using a two-level atom for five model atmospheres distinguished from each other mainly by the location of the temperature minimum.

Description Emission lines in the long period Cepeheid [script l] Carinae FB2

In the five models the temperature minimum and the chromospheric temperature are adjusted to give best agreement between computed and observed by:   Jenelle Evans first appeared in the reality television program 16 and Pregnant and then went on to star in the follow-up series Teen Mom is a model and an actress, but above all else, Jenelle is a mom.

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In a poem, a pair of lines that are the same length and usually rhyme and form a complete thought. dactyl A metrical foot of three syllables, one long (or stressed) followed by two short (or unstressed). Learn cepheid variable with free interactive flashcards.

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Opposite term: stimulated emission German: spontane Emission. Categories: quantum optics, fluctuations and noise.

How to cite the article; suggest additional literature. Author: Dr. Rüdiger Paschotta. The Theory of Cepheid Varia hili ty y (George Darwin Lecture, delivered at Burlington House on September 8) INTRODUCTION It is now just 50 years since Eddington's first paper on Cepheid pulsation (1).

He recognized immediately the central problem of the maintenance of pulsation and proceeded to develop (2) the linear theory.

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The correct answer that would best complete the given statement above would be option B. Non-intersecting lines that are separated by equal distances at every point can best be described as PARALLEL.

When the lines are parallel, they do not intersect. Hope this answers your question. 3. Why does each metal have its own distinctive flame test color?

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