Question

A B8 star (like one of the fainter members of the Pleiades) has an absolute magnitude...

A B8 star (like one of the fainter members of the Pleiades) has an absolute magnitude of about M=0. At the distance of Price-Whelan 1 (remember to use parsecs!), how faint would its apparent magnitude be, and how much fainter is that than the faintest star you can see with your eyes (apparent magnitude 6)? SHOW YOUR WORK. Just writing down the answer gets zero credit.

If a B8 star has about 4 solar masses, about how long does it stay on the main sequence? (For reference, the sun will be on the main sequence for about 10 Gyr.) SHOW YOUR WORK. How does this compare with the estimated age of Price-Whelan 1?

Science   Advanced-Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

The estimated age of the Price-Whelan 1 is 130 M yr or 130 million years.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Show that a star that has an absolute magnitude of -7, but an apparent magnitude of...
Show that a star that has an absolute magnitude of -7, but an apparent magnitude of +5 is at a distance of 2411 parsecs. Show that a star with a parallax of 0.065" with an apparent magnitude of 5.5 has an absolute magnitude of 4.6.
If a stars absolute magnitude is numerically equal to its apparent magnitude, what do we know...
If a stars absolute magnitude is numerically equal to its apparent magnitude, what do we know about the star? A. It is 1 parsec from us. B. It is 10 parsecs from us. C. It is 1 light year from us. D. The star is a main sequence star. E. [The question is misleading; it is impossible for the two magnitudes to be equal.] ----------------------------------------- A star has an apparent magnitude of 6.5 and an absolute magnitude of 4. Ignoring...
A star has an apparent magnitude of 5.45, an absolute magnitude of 1.11, and a color...
A star has an apparent magnitude of 5.45, an absolute magnitude of 1.11, and a color of 0.12. What is the distance to this star? 1.36 parsecs 205 parsecs 74 parsecs 18.7 parsecs 1.87 parsecs It cannot be determined
A certain star has an absolute magnitude of –1.0 and an apparent magnitude of 4.8. How...
A certain star has an absolute magnitude of –1.0 and an apparent magnitude of 4.8. How far away is this star (in parsecs)? ___________________
Barnard’s Star is a famous and faint nearby star with a luminosity of 0.0004L, a distance...
Barnard’s Star is a famous and faint nearby star with a luminosity of 0.0004L, a distance of 1.83 parsecs, and an apparent visual magnitude of 9.511. Betelgeuse is one of the most famous stars in the constellation Orion. Betelgeuse has a luminosity, at its brightest, of 150,000L, a parallax of 0.00451", and an apparent visual magnitude of 0.50. How far away would Betelgeuse have to be to have the same apparent visual magnitude of Barnard’s star? What would its parallax...
An unnamed star is found to have an apparent magnitude of +5.1 and an absolute magnitude...
An unnamed star is found to have an apparent magnitude of +5.1 and an absolute magnitude of -6.0. What can we conclude about its distance from us? Explain your reasoning.
) Canopus (alpha Carinae) is the second-brightest star in the night sky, its apparent magnitude is...
) Canopus (alpha Carinae) is the second-brightest star in the night sky, its apparent magnitude is 0.7 m . Based on the parallax measurements of Hipparcos satellite, its parallax is approximately 0.01 arcseconds. (i) Find the distance to Canopus in parsecs and its absolute magnitude. [3 marks] (ii) Assuming that the absolute magnitude of the Sun is 4.8m show that the luminosity of Canopus in terms of the solar luminosity L⊙ is approximately 16000 L⊙. [2 marks] (iii) The emission...
Which of the following is closest to the distance from Earth to a star having an...
Which of the following is closest to the distance from Earth to a star having an Absolute Magnitude of -1 and an apparent Magnitude of 2.5 ? Question 18 options: 150 parsecs 100 parsecs 50 parsecs 25 parsecs Question 13 (1 point) Saved Which of the following is closest to the Absolute Magnitude of a star having a luminosity of 150 times the luminosity of the Sun ? Question 13 options: 0.0 -1.0 1.0 -2.0 Question 14 (1 point) Saved...
Two main sequence stars appear equally bright in the night sky. Star P has a spectral...
Two main sequence stars appear equally bright in the night sky. Star P has a spectral class of M2 and Star Q has a spectral class of B8. Explain your answers. Which is cooler? Which has a greater absolute magnitude? Which emits more energy per unit surface area? Which is closer to the observer?
Question 1: a: The measured parallax angle for the star Antares as observed during Earth’s orbit...
Question 1: a: The measured parallax angle for the star Antares as observed during Earth’s orbit is 0.008”. Here, I’m using the definition that this angle is half of its total apparent movement on the sky. Given this angle, calculate the distance to Antares. b: The angular diameter of Antares has been resolved in one study, and given as 41 milliarcseconds. Using your answer to part a above, calculate its linear diameter. How does this compare to the Sun’s? c:...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT