a) A galaxy cluster has a recessional velocity of 44,000 km/s. Using the best estimate for...
a) A galaxy cluster has a recessional velocity of 44,000 km/s. Using the best estimate for Hubble's constant, find the distance to the galaxy cluster. ____________ Mpc
b) Suppose the Hubble constant had a value of H= 145 km/s/Mpc. What would be the age of the universe? __________ billion years
c) What if H had a value of 35 km/s/Mpc?
____________ billion years
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a) A galaxy cluster has a recessional velocity of
44,000 km/s. Using the best estimate for...
2000 Ho=68 km/s MPC + Redshift (km/s) 1000 + + Virgo Cluster + 10 20 Distance...
2000 Ho=68 km/s MPC + Redshift (km/s) 1000 + + Virgo Cluster + 10 20 Distance (Mpc) 0 The universe is expanding according to Edwin Hubble's famous equation v = Hod where v is the velocity of a galaxy at distance d away. Professional astronomers usually talk about Hubble's Constant in the weird units of H, = 70 km/sec/Mpc. This final unit, "Mpo" is the "Megaparsec" and it equals approximately 3 million light years. This is a powerful equation. It...
2000 Ho=68 km/s Mpc * Redshift (km/s) 1000 * Virgo Cluster 0 + + 0 a...
2000 Ho=68 km/s Mpc * Redshift (km/s) 1000 * Virgo Cluster 0 + + 0 a Montenele best 20 10 Distance (Mpc) Part 5/6 Let's now calculate the number of years that is, recalling that one year equals approximately 3 x 107 seconds x 10 നമാലയിൽ രാജി years Terms The universe is expanding according to Edwin Hubble's famous equation Hod where v is the velocity of a galaxy at distance d away. Professional astronomers usually talk about Hubble's Constant in...
OLDOS Sixth Problem 2000 Ho=68 km/s Mpc ** Redshift (km/s) 1000 ++ Virgo Cluster + 0...
OLDOS Sixth Problem 2000 Ho=68 km/s Mpc ** Redshift (km/s) 1000 ++ Virgo Cluster + 0 20 10 Distance (Mpc) According to Hubble's Law, what is the recessional velocity of a galaxy that is 130 Mpc away? Part 2/6 km/sec
The Hubble Parameter The constant describing the rate of this recession, called the Hubble parameterHubble parameterA...
The Hubble Parameter
The constant describing the rate of this recession, called the
Hubble parameterHubble parameterA measure of the rate of expansion
of the universe, which is the average value of the velocity of
recession divided by distance: about 70 km/s/megaparsec. Hubble
parameter A measure of the rate of expansion of the universe, which
is the average value of the velocity of recession divided by
distance: about 70 km/s/megaparsec. , is used to determine the age
and size of the...
Suppose that the Hubble constant had a value of H = 150 km/s/Mpc. What would be...
Suppose that the Hubble constant had a value of H = 150 km/s/Mpc. What would be the age of the universe? What if H had a value of 30 km/s/Mpc?
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 %...
3. The observed recession velocity of a galaxy is the sum of its Hubble flow velocity,...
3. The observed recession velocity of a galaxy is the sum of its Hubble flow velocity, UH = Hod, and the line-of-sight (LOS) component of its peculiar velocity, vp, due to local gravitational effects. a) Suppose we measure Ho by measuring the distance and redshift for a single galaxy velocity of the galaxy?10 b) At what distance can we measure Ho to 5%? Assume the true value of Ho is 74 kin s-"Mpc-1 and a typical LOS peculiar velocity is...
The observed recession velocity of a galaxy is the sum of its Hubble flow velocity, vH...
The observed recession velocity of a galaxy is the sum of its Hubble flow velocity, vH = H0d, and the line-of-sight (LOS) component of its peculiar velocity, vp, due to local gravitational effects. a) Suppose we measure H0 by measuring the distance and redshift for a single galaxy. Write an expression for how the error in our measurement depends on the peculiar velocity of the galaxy? b) At what distance can we measure H0 to 5%? Assume the true value...
this pic will helpful upper one is not clear 1.For Galaxy M87 calculate the distance d in Mpc and recessional velocity vr in km/s. Put your answers separated by a comma. 2.For Galaxy M60 calculate th...
this pic will helpful upper one
is not clear
1.For Galaxy M87 calculate the distance d in Mpc and recessional
velocity vr in km/s. Put your answers separated by a comma.
2.For Galaxy M60 calculate the distance d in Mpc and recessional
velocity vr km/s. Put your answers separated by a comma.
3.For Galaxy M104 calculate the distance d in Mpc and
recessional velocity vr km/s. Put your answers separated by a
comma.
4.For Galaxy M95 calculate the distance d...
Question 14 I need help on 500KM O PARSECS FIGURE 1 Velocity-Distance Relation among Extra-Galactic Nebulae. 13. [3pt] Approximately what value of the Hubble Constant would you infer from this graph?...
Question 14 I need help on
500KM O PARSECS FIGURE 1 Velocity-Distance Relation among Extra-Galactic Nebulae. 13. [3pt] Approximately what value of the Hubble Constant would you infer from this graph? (answer in km/s/Mpc) Correct, computer gets: 500 14. [3pt] What is the approximate age of the universe indicated by this (very wrong) value of the Hubble Constant? (answer in years)
500KM O PARSECS FIGURE 1 Velocity-Distance Relation among Extra-Galactic Nebulae. 13. [3pt] Approximately what value of the Hubble Constant...
2000 Ho=68 km/s MPC + Redshift (km/s) 1000 + + Virgo Cluster + 10 20 Distance (Mpc) 0 The universe is expanding according to Edwin Hubble's famous equation v = Hod where v is the velocity of a galaxy at distance d away. Professional astronomers usually talk about Hubble's Constant in the weird units of H, = 70 km/sec/Mpc. This final unit, "Mpo" is the "Megaparsec" and it equals approximately 3 million light years. This is a powerful equation. It...
2000 Ho=68 km/s Mpc * Redshift (km/s) 1000 * Virgo Cluster 0 + + 0 a Montenele best 20 10 Distance (Mpc) Part 5/6 Let's now calculate the number of years that is, recalling that one year equals approximately 3 x 107 seconds x 10 നമാലയിൽ രാജി years Terms The universe is expanding according to Edwin Hubble's famous equation Hod where v is the velocity of a galaxy at distance d away. Professional astronomers usually talk about Hubble's Constant in...
OLDOS Sixth Problem 2000 Ho=68 km/s Mpc ** Redshift (km/s) 1000 ++ Virgo Cluster + 0 20 10 Distance (Mpc) According to Hubble's Law, what is the recessional velocity of a galaxy that is 130 Mpc away? Part 2/6 km/sec
The Hubble Parameter
The constant describing the rate of this recession, called the
Hubble parameterHubble parameterA measure of the rate of expansion
of the universe, which is the average value of the velocity of
recession divided by distance: about 70 km/s/megaparsec. Hubble
parameter A measure of the rate of expansion of the universe, which
is the average value of the velocity of recession divided by
distance: about 70 km/s/megaparsec. , is used to determine the age
and size of 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 %...
3. The observed recession velocity of a galaxy is the sum of its Hubble flow velocity, UH = Hod, and the line-of-sight (LOS) component of its peculiar velocity, vp, due to local gravitational effects. a) Suppose we measure Ho by measuring the distance and redshift for a single galaxy velocity of the galaxy?10 b) At what distance can we measure Ho to 5%? Assume the true value of Ho is 74 kin s-"Mpc-1 and a typical LOS peculiar velocity is...
this pic will helpful upper one
is not clear
1.For Galaxy M87 calculate the distance d in Mpc and recessional
velocity vr in km/s. Put your answers separated by a comma.
2.For Galaxy M60 calculate the distance d in Mpc and recessional
velocity vr km/s. Put your answers separated by a comma.
3.For Galaxy M104 calculate the distance d in Mpc and
recessional velocity vr km/s. Put your answers separated by a
comma.
4.For Galaxy M95 calculate the distance d...
Question 14 I need help on
500KM O PARSECS FIGURE 1 Velocity-Distance Relation among Extra-Galactic Nebulae. 13. [3pt] Approximately what value of the Hubble Constant would you infer from this graph? (answer in km/s/Mpc) Correct, computer gets: 500 14. [3pt] What is the approximate age of the universe indicated by this (very wrong) value of the Hubble Constant? (answer in years)
500KM O PARSECS FIGURE 1 Velocity-Distance Relation among Extra-Galactic Nebulae. 13. [3pt] Approximately what value of the Hubble Constant...
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