What is the Period-Luminosity Relationship? It is a relationship between a galaxies rate of rotation and...
What is the Period-Luminosity Relationship?
It is a relationship between a galaxies rate of rotation and its size.
It is the relationship between a Cepheid Variable star’s period of brightening/dimming and its average luminosity. The higher the luminosity, the shorter the period of brightening and dimming.
It is the relationship between a Cepheid Variable star’s period of brightening/dimming and its average luminosity. The higher the luminosity, the longer the period of brightening and dimming.
It is the relationship between a galaxy’s period of brightening/dimming and its average luminosity. The higher the luminosity, the longer the period of brightening and dimming.
Homework Answers
It is the relationship between a cepheid variable star's pulsating period, i.e. period of brightening/dimming and its average luminosity. A star with higher luminosity will have a longer pulsating period. option 3 is the correct answer
Add Answer to:
What is the Period-Luminosity
Relationship?
It is a relationship between a galaxies rate
of rotation and...
JUST CHOOSE ABCD QUESTION 6 When was most of the Helium in the Universe formed? A....
JUST CHOOSE ABCD QUESTION 6 When was most of the Helium in the Universe formed? A. Throughout the history of the Universe, by nuclear fusion in stars B. A few minutes after the Big Bang C. At the time of Recombination D. At the time of the Big Bang 10 points QUESTION 7 Based on current estimates of the value of Hubble?s constant, how old is the universe? A. more than 100 billion years old B. between 5 and...
1500 1000 500 5 10 15 20 Distance (Mpc) Figure 7.6: A Hubble diagram showing the...
1500 1000 500 5 10 15 20 Distance (Mpc) Figure 7.6: A Hubble diagram showing the relationship between galaxy distance and re- cessional velocity, where distances were derived from the period-luminosity relationship for Cepheid variable stars identified within each galaxy. The M100 point is circled in red, and based in part on the data shown in Figures 17.4 and 7.5. The slope of the relationship is 79 +4 km sec1 per Mpc, and the correlation coefficient R is 78 %...
A particular type II Cepheid variable has a period of 10 days, and an apparent magnitude...
A particular type II Cepheid variable has a period of 10 days,
and an apparent magnitude of 3.2. What is the distance of that
Cepheid variable? (Refer to the enclosed figure.)
-6 -5 2 -4 -2 0.25 0.63 1.64.0 10.0 25.0 63.1 Period (days) Figure 3.5 Period-Luminosity Relation for Cepheids Harlow Shapley's estimates fitted all Cepheids onto one curve (solid white line), with luminosity increasing for the longer-period variables. Walter Baade divided Cepheids into two classes, Population (solid black line)...
2、There are two types of Cepheids, called Type I (or classical) Cepheids and Type II Cepheids. Each type has its own period-luminosity relation, as shown on the graph below. 10% 104- W Vir 102- 1...
2、There are two types of Cepheids, called Type I (or classical) Cepheids and Type II Cepheids. Each type has its own period-luminosity relation, as shown on the graph below. 10% 104- W Vir 102- 1.O 2.0 3.0 0.0 1.0 Log Period (days) (a) A galaxy is observed to contain a type I Cepheid of period 30 days and apparent magnitude 20. Find the distance to the galaxy (b) Type I and Type II Cepheids are distinguished by the shape of...
Explain the relationship between the price elasticity of demand and total revenue. What are the impacts...
Explain the relationship between the price elasticity of demand and total revenue. What are the impacts of various forms of elasticities (elastic, inelastic, unit elastic, etc.) on business decisions and strategies to maximize profit? Explain your responses using empirical examples, formulas, and graphs. Is the price elasticity of demand or supply more elastic over a shorter or a longer period of time? Why? Give examples.
1/ Sirius A has a luminosity of 9.98 x 10^27 W and a surface temperature of...
1/ Sirius A has a luminosity of 9.98 x 10^27 W and a surface temperature of about 9400K. What is its radius? A/ r = 7.56 x 10^8 m B/ r = 1.34 x 10^9 m C/ r= 1.26 x 10^13 m D/ r = 7.94 x 10^-14 m 3/ which of the following stellar properties is the most fundamental to a star’s main-sequence and post-main sequence life? A/ temperature B/ mass C/ luminosity D/ radius 4/ Stars Moppit and...
What is the relationship between a bondholder's rate of return and the bond's yield to maturity...
What is the relationship between a bondholder's rate of return and the bond's yield to maturity if he does not hold the bond until it matures? A. The rate of return will be lower than the yield to maturity. B. The rate of return will be higher than the yield to maturity. C. The rate of return will equal the yield to maturity. D. It could be higher or lower.
Question 5 A scatter diagram is a convenient way to graphically display the relationship between two...
Question 5 A scatter diagram is a convenient way to graphically display the relationship between two variables. Your answer: True False Clearanser A confidence interval on the mean response in simple linear regression is always shorter at the center of the regressor or predictor variable data and longer at the extremes. Yanitiniz: True False Yaniti temizle Sonraki
Explain what synchronous rotation is. What is it caused by? Give an example. Answer: Synchronous rotation...
Explain what synchronous rotation is. What is it caused by? Give an example. Answer: Synchronous rotation is when the rotational period of an object is the same as its orbital period around another object. As an object orbits another, it is stretched by the varying force of gravity across it. The resulting tidal bulges lag behind the rotational period becomes the same as the orbital period, at which point there is no longer any tidal friction and the rotational and...
Describe the relationship between an animal’s size and its population’s rate of increase. Illustrate with examples....
Describe the relationship between an animal’s size and its population’s rate of increase. Illustrate with examples. Explain the biology behind the relationship. Do you see any connection between longevity, size, and whether the organism is altricial or precocious? Explain if so.
1500 1000 500 5 10 15 20 Distance (Mpc) Figure 7.6: A Hubble diagram showing the relationship between galaxy distance and re- cessional velocity, where distances were derived from the period-luminosity relationship for Cepheid variable stars identified within each galaxy. The M100 point is circled in red, and based in part on the data shown in Figures 17.4 and 7.5. The slope of the relationship is 79 +4 km sec1 per Mpc, and the correlation coefficient R is 78 %...
A particular type II Cepheid variable has a period of 10 days,
and an apparent magnitude of 3.2. What is the distance of that
Cepheid variable? (Refer to the enclosed figure.)
-6 -5 2 -4 -2 0.25 0.63 1.64.0 10.0 25.0 63.1 Period (days) Figure 3.5 Period-Luminosity Relation for Cepheids Harlow Shapley's estimates fitted all Cepheids onto one curve (solid white line), with luminosity increasing for the longer-period variables. Walter Baade divided Cepheids into two classes, Population (solid black line)...
2、There are two types of Cepheids, called Type I (or classical) Cepheids and Type II Cepheids. Each type has its own period-luminosity relation, as shown on the graph below. 10% 104- W Vir 102- 1.O 2.0 3.0 0.0 1.0 Log Period (days) (a) A galaxy is observed to contain a type I Cepheid of period 30 days and apparent magnitude 20. Find the distance to the galaxy (b) Type I and Type II Cepheids are distinguished by the shape of...
Question 5 A scatter diagram is a convenient way to graphically display the relationship between two variables. Your answer: True False Clearanser A confidence interval on the mean response in simple linear regression is always shorter at the center of the regressor or predictor variable data and longer at the extremes. Yanitiniz: True False Yaniti temizle Sonraki
Explain what synchronous rotation is. What is it caused by? Give an example. Answer: Synchronous rotation is when the rotational period of an object is the same as its orbital period around another object. As an object orbits another, it is stretched by the varying force of gravity across it. The resulting tidal bulges lag behind the rotational period becomes the same as the orbital period, at which point there is no longer any tidal friction and the rotational and...
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