(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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Assume that an O main-sequence star (40,000 K) and a G main-sequence star (5,500 K) have the same radius. How many times brighter is the O star? LO LG = Star B is located 2.6 times farther from earth than Star A, but both have the same apparent visual magnitude of 1 mag. Which star is intrinsically brighter?How many times brighter is the star? If a star has an apparent magnitude equal to its absolute magnitude, how far away is it in parsecs? pc

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

See solution

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.