Answered: Astronomers us the P-Cygni line… | bartleby

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Astronomers us the P-Cygni line features in a spectrum of a supernova to...
Select one alternative:
...measure the velocity of the supernova ejecta.
...to measure the rotation speed of the star that exploded.
...measure the composition of the supernova ejecta more accurately than with other lines.
...to measure the mass of the neutron star or black hole formed in the supernova.

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