An astronomer observes the spectrum of a distant star and notices that the Hydrogen alpha absorption line appears with a wavelength of 590.4 nm. This spectral line has a wavelength of 656 nm when measured in the laboratory. Choose the option below that most plausibly explains this observation. Select one: O a. Some intervening material must be imposing an unusual absorption spectrum on the star's continuum radiation O b. The star is moving towards the observer with a speed of 10% of the speed of light. O C. The star is moving away from the observer with a speed of 10% of the speed of light O d. The star is moving towards the observer with a speed 10 m/s O e. The star has a very hot atmosphere that changes the wavelengths of the spectral lines
An astronomer observes the spectrum of a distant star and notices that the Hydrogen alpha absorption line appears with a wavelength of 590.4 nm. This spectral line has a wavelength of 656 nm when measured in the laboratory. Choose the option below that most plausibly explains this observation. Select one: O a. Some intervening material must be imposing an unusual absorption spectrum on the star's continuum radiation O b. The star is moving towards the observer with a speed of 10% of the speed of light. O C. The star is moving away from the observer with a speed of 10% of the speed of light O d. The star is moving towards the observer with a speed 10 m/s O e. The star has a very hot atmosphere that changes the wavelengths of the spectral lines
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Transcribed Image Text:An astronomer observes the spectrum of
a distant star and notices that the
Hydrogen alpha absorption line appears
with a wavelength of 590.4 nm. This
spectral line has a wavelength of 656 nm
when measured in the laboratory.
Choose the option below that most
plausibly explains this observation.
Select one:
а.
Some intervening material must be
imposing an unusual absorption
spectrum on the star's continuum
radiation
O b. The star is moving towards the
observer with a speed of 10% of the
speed of light.
О с.
The star is moving away from the
observer with a speed of 10% of the
speed of light
O d. The star is moving towards the
observer with a speed 10 m/s
O e. The star has a very hot atmosphere
е.
that changes the wavelengths of the
spectral lines
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