Cepheids, also called Cepheid Variables, are stars which brigthen and dim periodically. This behavior allows them to be used as cosmic yardsticks out to distances of a few tens of millions …

DISTANCE MODULUS For this lab, we will focus on two techniques that can be used to measure the distance modulus of objects in deep space – supernovas and Cepheid variable stars. …

By observing the rotation rate of spiral galaxies and determining when they must have begun to rotate, By examining the spectra of Cepheid Variable stars in neighboring galaxies. By …

Exercise 1: Finding a Cepheid variable star Before we can use Cepheids to measure the distance to Andromeda, we first need to find one of these stars inside that galaxy. This is tricky: when …

Here’s how to approach this question Examine the known relationship described by the Leavitt law, considering that a direct proportionality exists between the period and luminosity of …

Question: VARIABLE STARS What will you learn in this Lab? This lab will cover three of the main types of variable stars that we observe in our night sky: RR Lyrae stars, Cepheid variable stars …

Here’s how to approach this question Calculate the average absolute magnitude of each observed spiral nebula using the given relationship between luminosity and period, M v = 2.5 …

Question: Lab #10: Cepheid Variable Stars (continued) Page 6 of 6 Cepheid variables have been used to determine the distance to the Andromeda Galaxy. Suppose you were the astronomer …

Question: Question 47 (1 point) Nearly all galaxies contain Cepheid variable stars. Why, then, do we determine the most distant galaxy distances using white dwarf supernovae rather than …

Question: Cepheid variable stars are 'standard candles' because, Group of answer choices they all pulsate with exactly the same period. they are the basis of the OBAFGKM classification …