Essay
With the Hubble Space Telescope, you discover a Cepheid variable star in a nearby galaxy that has a period of 30 days.If nearby Cepheids follow a period-luminosity that relates the absolute magnitude to the period of pulsation via 
, where P(days) is the star's period in days, then what is this Cepheid's luminosity? Recall that the Sun's absolute magnitude is M = 4.83.If the apparent magnitude of the Cepheid is 25, what is this galaxy's distance in parsecs?
Correct Answer:
Verified
The Cepheid's absolute magnitude is: 
Th...View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Correct Answer:
Verified
Th...View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Q87: A neutron star contains a mass of
Q88: During the main-sequence evolution of a massive
Q89: Explain the likelihood of Type Ia and
Q90: Name three processes that speed the collapse
Q91: Briefly explain why planets like ours could
Q93: A typical neutron star has a diameter
Q94: In the CNO cycle, carbon is used
Q95: The figure below shows three distinct types
Q96: If the core of a high-mass star
Q97: The weight of an average human of