(a) The way, one can tell that the 20 brightest stars of the main-sequence stars like Sirius (spectral type A1), Vega (A0), etc. are younger than the Sun.

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Answer 1

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Chapter 19, Problem 23Q

To determine

(a)

The way, one can tell that the 20 brightest stars of the main-sequence stars like Sirius (spectral type A1), Vega (A0), etc. are younger than the Sun.

To determine

(b)

Whether or not, one can tell the age of alpha-Centauri A star as compared to that of the Sun with the given information.

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Distance from Apparent Brightness (rank; brightest, 8 = dimmest) Name of Star Earth (light years) | 1 = Sun Sirius 8.6 Canopus Arcturus 309 3. 36.7 4 Rigel Vega Alpha Centauri Bernard's Star 773 5 25.3 4.3 7 5.9 8 13 What sentence explains why a star can be much farther from Earth than the Sun, but still be bright? nida nenv A. Distance from Earth and apparent brightness are related. B. Bright stars that are farther away are larger than the Sun. C. The higher it appears in the sky, the brighter the star. D. The apparent brightness scale goes up as stars get dimmer. del sdT

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"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

Answer 2

Question

Chapter 19, Problem 23Q

To determine

(a)

The way, one can tell that the 20 brightest stars of the main-sequence stars like Sirius (spectral type A1), Vega (A0), etc. are younger than the Sun.

To determine

(b)

Whether or not, one can tell the age of alpha-Centauri A star as compared to that of the Sun with the given information.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 3

Question

Chapter 19, Problem 23Q

To determine

(a)

The way, one can tell that the 20 brightest stars of the main-sequence stars like Sirius (spectral type A1), Vega (A0), etc. are younger than the Sun.

To determine

(b)

Whether or not, one can tell the age of alpha-Centauri A star as compared to that of the Sun with the given information.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 19, Problem 23Q

To determine

(a)

The way, one can tell that the 20 brightest stars of the main-sequence stars like Sirius (spectral type A1), Vega (A0), etc. are younger than the Sun.

To determine

(b)

Whether or not, one can tell the age of alpha-Centauri A star as compared to that of the Sun with the given information.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 5

Chapter 19, Problem 23Q

To determine

(a)

The way, one can tell that the 20 brightest stars of the main-sequence stars like Sirius (spectral type A1), Vega (A0), etc. are younger than the Sun.

To determine

(b)

Whether or not, one can tell the age of alpha-Centauri A star as compared to that of the Sun with the given information.

Answer 6

Chapter 19, Problem 23Q

To determine

(a)

The way, one can tell that the 20 brightest stars of the main-sequence stars like Sirius (spectral type A1), Vega (A0), etc. are younger than the Sun.

Answer 7

Chapter 19, Problem 23Q

To determine

(a)

The way, one can tell that the 20 brightest stars of the main-sequence stars like Sirius (spectral type A1), Vega (A0), etc. are younger than the Sun.

Answer 8

To determine

(b)

Whether or not, one can tell the age of alpha-Centauri A star as compared to that of the Sun with the given information.

Answer 9

To determine

(b)

Whether or not, one can tell the age of alpha-Centauri A star as compared to that of the Sun with the given information.

Answer 10

Expert Solution & Answer

Answer 11

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Answer 12

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Answer 13

Ch. 19 - Prob. 1Q Ch. 19 - Prob. 2Q Ch. 19 - Prob. 3Q Ch. 19 - Prob. 4Q Ch. 19 - Prob. 5Q Ch. 19 - Prob. 6Q Ch. 19 - Prob. 7Q Ch. 19 - Prob. 8Q Ch. 19 - Prob. 9Q Ch. 19 - Prob. 10Q

(a) The way, one can tell that the 20 brightest stars of the main-sequence stars like Sirius (spectral type A1), Vega (A0), etc. are younger than the Sun.

Solution Summary: The author explains that the brightest stars of the main-sequence stars like Sirius, Vega, Spica, Fomalhaut and Regulus are younger than the Sun.

Concept explainers

(a)

The way, one can tell that the 20 brightest stars of the main-sequence stars like Sirius (spectral type A1), Vega (A0), etc. are younger than the Sun.

(b)

Whether or not, one can tell the age of alpha-Centauri A star as compared to that of the Sun with the given information.

Want to see the full answer?

Chapter 19 Solutions

(a) The way, one can tell that the 20 brightest stars of the main-sequence stars like Sirius (spectral type A1), Vega (A0), etc. are younger than the Sun.

Solution Summary: The author explains that the brightest stars of the main-sequence stars like Sirius, Vega, Spica, Fomalhaut and Regulus are younger than the Sun.

Concept explainers

(a) The way, one can tell that the 20 brightest stars of the main-sequence stars like Sirius (spectral type A1), Vega (A0), etc. are younger than the Sun.

(b) Whether or not, one can tell the age of alpha-Centauri A star as compared to that of the Sun with the given information.

Want to see the full answer?

Chapter 19 Solutions

(a)

The way, one can tell that the 20 brightest stars of the main-sequence stars like Sirius (spectral type A1), Vega (A0), etc. are younger than the Sun.

(b)

Whether or not, one can tell the age of alpha-Centauri A star as compared to that of the Sun with the given information.