The light curve shown below is for a cepheid variable with apparent magnitude m = 7.9. Use the luminosity-period relationship shown below to determine the distance to the cepheid in units of kpc: M = -2.43 log10(P - 1) - 4.05.
Added by Christopher D.
Close
Step 1
43 log1o(P - 1) - 4.05 L = -2.43 log10(7.9 - 1) - 4.05 Show more…
Show all steps
Your feedback will help us improve your experience
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Suppose the following information was measured about a certain star. Calculate its diameter. Apparent brightness = 8. 36 x 10-8 Wm-2 Distance to Earth = 196.2 parsec Peak emitted wavelength = 9.91 x 10-7 m
Madhur L.
A Cepheid variable is a star whose brightness varies in a periodic way over time. Using the ruler on the graph above, record the distance between two peaks to determine the period of this variable star.
Prachita K.
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD