A Cepheid variable is observed in a galaxy 1 Mpc distant. It has a period of 30 days. What is its apparent magnitude?
A) 12.8
B) 15.9
C) 19.8
D) 21.7
Correct Answer:
Verified
Q6: The intrinsic brightness (represented by luminosity) of
Q7: How does the intrinsic brightness or luminosity
Q8: The Cepheid variables that Hubble observed in
Q9: A Cepheid variable is observed in a
Q10: A Cepheid variable is observed in a
Q12: Over what distance does the Cepheid variable
Q13: Which of the following would you NOT
Q14: What do we know about the direction
Q15: The Hubble classification for a spiral galaxy
Q16: The Hubble classification for a galaxy having
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents