The star Procyon A has an apparent magnitude of 0.38 and an absolute magnitude of 2.66 while the star Ross 128 has an apparentmagnitude of 11.1 and an absolute magnitude of 13.5. Which star emits more energy?A. Procyon AO B. Ross 128O C. They emit pretty much the same energy.D. There is insufficient information to tell.

Answered: Image /qna-images/answer/d862b624-858c-4acb-ae4e-8bc5d24589c0.jpg

Answered: he same energy. nformation to tell.

Horizons: Exploring the Universe (MindTap Course List)

14th Edition

ISBN:9781305960961

Author:Michael A. Seeds, Dana Backman

Publisher:Michael A. Seeds, Dana Backman

Chapter9: The Formation And Structure Of Stars

Section: Chapter Questions

Problem 10RQ

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Similar questions

1. A star on the main sequence has a surface temperature of10,000 K. Use the H-R diagram to determine it’s luminosity(approximately) and then calculate it’s mass and age (you mayuse solar units). If it were a red giant, could we do this?
"51 Pegasi" is the name of the first normal star (besides the Sun) around which a planet was discovered. It is in the constellation Pegasus the horse. Its parallax is measured to be 0.064 arcsec. a. What is its distance from us? b. The apparent brightness is 1.79 × 10-10 J/(s·m2 ). What is the luminosity? How does that compare with that of the Sun? Look up the temperature: how do
4. List the seven main classes of stars, from hottest to coolest.
1. A star such as our Sun will eventually evolve to a “red giant” star and then to a “white dwarf” star. A typical white dwarf is approximately the size of Earth, and its surfacetemperature is about 2.5×10 3K. A typical red giant has a surface temperature of 3.0×104 K and a radius ~100,000 times larger than that of a white dwarf.a) What is the average radiated power per unit area by each of these types of stars?b) What is the ratio of total power radiated from the white dwarf over the power of the red giant
The spectral type of a star is directly related to its color. Recall that a star emits light as a blackbody, which has a particular shape to its spectrum, as shown in this figure. Based on this, what basic property of a star determines its color (and thus its spectral type)? Choose one: A. age B. composition C. radius D. temperature

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