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When the spectrum of light from a star is Redshifted the star must be what?
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Analysis of the of a star reveals the composition of the star?
That's done by analyzing the star's spectrum.
What is a stellar spectra?
A stellar spectrum is the light emitted by a star.
Visible light from a distant star can be spread into a spectrum by using what?
spectrometer which has prism installed in it
What part of a star is it that astronomers study in order to learn its characteristics of a star?
Primarily, it's spectrum (it's light seen through a spectrograph).
How can you find out the temperature of a star by its light?
The star can be observed with a spectrograph, which spreads the light out according to its wavelength to produce a spectrum. The wavelength of peak intensity indicates the surface temperature. The light from a star is classified paradoxically as 'black body radiation', which means that its colour and temperature are closely linked by a relationship that can be reproduced in the laboratory. Within the spectrum there are also dark lines at specific wavelengths, and these indicate the presence of the different elements in the outer layer of the star.
Does the spectrum of light from a star have no gaps?
No, a spectrum of light with no gaps can not be achieved.
If a star is moving away from you the absorption lines in its spectrum will?
If a star is moving away from you, the emission lines in its spectrum will be shiftedtoward longer wavelengths/lower frequency/the red end of the spectrum, since theyoriginate on the star itself.But there's no effect on the absorption lines, because those are caused by materialthat's unrelated to the star, and just happens to be in the line of sight between thestar and you.
The father the star is away from the earth the more is is?
Redshifted.
Analysis of the of a star reveals the composition of the star?
That's done by analyzing the star's spectrum.
What does a star emits?
The spectrum is a kind of analysis of the light emitted by a star.
Why is the blue star hotter?
When a star is blue it means it is putting out light mostly in the ultraviolet spectrum which is of a higher energy than infared light, or light in the visible spectrum. This means the star has more energy and heat.
What happens when a star's spectrum is redshifted as a result of the Doppler effect?
With respect to light, the Doppler effect refers to the apparent change in the frequency (and wavelength) of electromagnetic radiation due to the relative motion of the source relative to the observer. When the source (i.e. a star) moves AWAY from the observer, there is an apparent rarefaction (expansion) in the wavelength of emitted light (i.e. frequency decreases), causing a shift in the emission spectrum towards the red side. This is known as redshifting --> the star is moving away from the observer. The opposite happens in blueshift, when the source moves towards the observer.
What type of spectrum do most stars have?
The spectrum is a kind of analysis of the light emitted by a star.
What is a stellar spectra?
A stellar spectrum is the light emitted by a star.
The apparent shift in the spectrum of a star as it moves toward or away from the earth is explained by the phenomenon known as the?
Doppler effect. This effect causes the wavelengths of light from a star to appear shorter (blueshifted) as it moves towards the Earth and longer (redshifted) as it moves away, providing valuable information about the star's motion in space.
How can spectrum tell us if an object is reflecting blue light from a star?
how can you tell if an object is reflecting blue light from a star
Why can elements in a star be separated?
Because the spectrum of the star's light can be seen to have dark lines all the way through, and each element has its own set of dark lines in the star's spectrum.
