The surface brightness profiles of spiral galaxy disks follow the Sersic formula with n = 1. How much fainter is the spiral galaxy at a radius of r compared to the r0, or in other words, what is the ratio of I(r)/I0. Express your answer in scientific notation with zero decimal places. Values: r = 19 r0

The surface brightness profiles of spiral galaxy disks follow the Sersic formula with n = 1. How much fainter is the spiral galaxy at a radius of r compared to the r0, or in other words, what is the ratio of I(r)/I0. Express your answer in scientific notation with zero decimal places. Values: r = 19 r0

Astronomy

1st Edition

ISBN:9781938168284

Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff

Publisher:Andrew Fraknoi; David Morrison; Sidney C. Wolff

Chapter28: The Evolution And Distribution Of Galaxies

Section: Chapter Questions

Problem 11E: Given the ideas presented here about how galaxies form, would you expect to find a giant elliptical...

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If the diameter of the Milky Way Galaxys visible disk, 80,000 ly, is represented in a model by a dinner plate with a diameter of 10 inches, what is the model distance to galaxy M31, 2.6 millionly away? What is the model distance to the Virgo galaxy cluster, 16 Mpc away? (Convert answers to feet.)
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