Stars other than our sun normally appear featureless when viewed through telescopes. Yet astronomers can readily use the light from these stars to determine that they are rotating and even measure the speed of their surface. How do you think they can do this?
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Solution 20DQ By stellar rotation, we check the spectral lines observed from a star. These spectral lines give the exact information about the constituents of the star, the rotational speed and many things. The rate of rotation of a star creates some equatorial bulge due to the centrifugal force, as the star is made up of gases. The equator can rotate at a different speed than the higher latitude places. By the interaction of the magnetic field of the star with the stellar wind also we can predict the rate of rotation. These are all a part of astronomical spectroscopy which is beyond the scope of this course. Otherwise we would have discussed the various spectral lines by different types of rotation and vibration
Textbook: University Physics
Author: Hugh D. Young, Roger A. Freedman
This full solution covers the following key subjects: stars, rotating, determine, Even, featureless. This expansive textbook survival guide covers 26 chapters, and 2929 solutions. The full step-by-step solution to problem: 20DQ from chapter: 16 was answered by , our top Physics solution expert on 05/06/17, 06:07PM. University Physics was written by and is associated to the ISBN: 9780321675460. The answer to “Stars other than our sun normally appear featureless when viewed through telescopes. Yet astronomers can readily use the light from these stars to determine that they are rotating and even measure the speed of their surface. How do you think they can do this?” is broken down into a number of easy to follow steps, and 44 words. Since the solution to 20DQ from 16 chapter was answered, more than 279 students have viewed the full step-by-step answer. This textbook survival guide was created for the textbook: University Physics, edition: 13.