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Why are pulsating variable stars useful for finding distances to globular clusters?
Wiki User
∙ 11y ago
It really depends on the type of star, but for certain star types, there is a relationship between the period and the absolute brightness, so if the period is observed, the absolute brightness can be deduced.
Yes. It seems like this question is about the Cepheid variables.
Wiki User
∙ 11y ago
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Are RR Lyrae stars and RR Lyrae variables different?
RR Lyrae variables are variable stars often used as standard candles. RR Lyrae are pulsating horizontal branch stars.
What are the differences between independent and dependent variables?
An independent variable is the variable you can change in an experiment. On a graph, it's on the X-axis. A dependent variable is the result of changing the independent variable. It is literally dependent on it. The dependent variable goes on the Y-axis.
What is the antonym for responding variable?
"Controlled Variable" or "Manipulated Variable"
What is a Factor that is deliberately changed in a experiment?
the anwer is a variable( the thng that will change over time in the experiment
What is the experimental variable?
The independent variable is the one variable that you change in your experiment
Is Betelgeuse a pulsating star?
Yes: Betelgeuse is a semiregular variable star so it is classed as a pulsating star.
How can varble stars be used to determine the distance to globular clusters?
The idea is that CERTAIN TYPES of stars, including certain variable stars (such as Cepheids) have a known brightness; so if you observe their apparent brightness, you can calculate their distance.
Pulsating variable stars are A-Binary stars B-Pulsars C-Novas D-Cephied Variables?
Cepheid Variables.
What does Cepheid mean?
A Cepheid is a member of a class of pulsating variable stars. The relationship between a Cepheid variable's luminosity and pulsation period is quite precise, securing Cepheids as viable standard candles and the foundation of the Extragalactic Distance Scale.
What does a variable scale look like?
A variable scale uses a set of adjustable accordion-like compasses to compute the distances between points on a map or diagram.
What sport is played on a variable sized grounds?
Baseball...though the bases have a consistant distances in all stadiums
Are RR Lyrae stars and RR Lyrae variables different?
RR Lyrae variables are variable stars often used as standard candles. RR Lyrae are pulsating horizontal branch stars.
What has the author Christine Mary Coutts written?
Christine Mary Coutts has written: 'Period changes of RR Lyrae variables in the globular cluster M5' -- subject(s): Cepheids, Variable stars
What is a variable star?
A variable star (or pulsating star) is a star that an earth observer sees as changing in luminosity over time. This variation in brightness may be something the star is "doing itself" because of changes in its nucleosynthetic processes, or it may be due to the passage of dust clouds or the like between the star and the observer. Wikipedia has more information, and you'll find a link to their post below.
Is the number of miles driven on a trip a continuous random variable?
There is an exact number of miles for a given route on a trip. However, the measurement of the distance from the odometer some small and possibly random errors, so the measured distances could be considered a continuous random variable.
How many hours is from St. Louis to Italy?
It really depends because there may be traffic air or ground, also, you didn't specifically name where in Italy. Distances is one major variable.
Heavenly body with periodically changing luminosity?
Variable stars are those that have changing luminosities. There are two kinds of variable stars: intrinsic (where the variation is due to physical changes in the star), and extrinsic (where the variation is due to the eclipse of one star by another, or due to the effect of stellar rotation). They can be further divided into five different classes: the intrinsic pulsating, cataclysmic, eruptive variables, extrinsic eclipsing binary, and rotating stars.
