High School

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After you see a +CER on the part of the distance manipulation where you approach the guarded object during the object guarding DSCC, what do you do next?

Answer :

Final answer:

To determine the distance to a cepheid variable star, measure its pulsation period and brightness variations, use the Period-Luminosity relationship to find its absolute magnitude, compare with its apparent magnitude, and apply the distance modulus formula.

Explanation:

To determine the distance of a newly discovered cepheid variable star, one can use the Leavitt Law or the Period-Luminosity relationship. This method involves several steps:

  1. Observe the cepheid variable star over time to determine its pulsation period.
  2. Measure the brightness (magnitude) variations of the star as it undergoes these pulsations.
  3. Use the established Period-Luminosity relationship which correlates the luminosity (intrinsic brightness) of a cepheid with its pulsation period. This relationship allows you to estimate the absolute magnitude of the cepheid.
  4. Compare the cepheid's absolute magnitude with its observed apparent magnitude.
  5. Apply the distance modulus formula which relates apparent magnitude, absolute magnitude, and distance to calculate the distance to the cepheid variable star.

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