The meaning of absolute-visual and apparent-visual and relation between them.

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Chapter 9, Problem 4RQ

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The meaning of absolute-visual and apparent-visual and relation between them.

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Please answer them:) Hey! As you can see, there is an image wherein the question is cut of. Here is the question: Which of the following statements is CORRECT in terms of the star's absolute magnitude??

15: A star has a parallax angle of 0.0270 arcseconds and an apparent magnitude of 4.641. What is the distance to this star? Answer: 37 16: What is the absolute magnitude of this star? Answer:1.8 17: Is this star more or less luminous than the Sun? Answer "M" for More luminous or "L" for Less luminous. (HINT: the absolute magnitude of the Sun is 4.8) Answer: M 18: What is the luminosity of this star? (HINT: The luminosity of the Sun is 3.85×1026 W.) Please answer question #18, #15-17 are correct, the photos provide the work for them.

Consider two stars A and B, with apparent magnitudes mA = 3 and mB = 13. Which star is brighter? (Answer this for yourself---don't enter below. This is easy if you understand the meaning of the magnitude scale.) How much brighter (in flux) is the brighter star? (I.e., enter the appropriate multiplicative factor N, such that Fbrighter = N Fdimmer. )