Describe the structure of the Milky Way galaxy, including its spiral arms, central bulge, halo, and the distribution of stars, gas, and dust. Explain how observational techniques, such as radio and infrared astronomy, help in mapping the structure and understanding the dynamics of our galaxy.
Q: (b) What is the ratio of the size of the Milky Way to the distance to the sun? dMw//dsun = 10*10:1…
A: b) The ratio of the size of milky way to the distance to the sun is given by,
Q: What color is the center of this galaxy and why?
A: The supermassive black hole is the centre of the galaxy is located at inside the bright white patch…
Q: An important part of the lifecycle of galaxies like the Milky Way is the self regulation of…
A: Required : The correct choice.
Q: Why do the spiral arms of our galaxy move around the center of the galaxy? a) Spiral arms do not…
A: Normal spirals have arms that emanate from the nucleus, while barred spirals have a bright linear…
Q: The hydrogen Balmer line has a wavelength of 486.1 nm. It is shifted to 552 nm in a galaxy's…
A: The red shift of hydrogen is, 1+z=λ2λ1z=552486.1-1 =0.1356
Q: What are the three main types of galaxies, and what are the peculiarities? What type is the Milky…
A: There are three main types of galaxies. They are, spiral galaxies, elliptical galaxies, and…
Q: What are the challenges of determining the structure of the Milky Way? Dark matter absorbs light…
A: 1. Dark matter does not absorb, reflect or emit light.
Q: You observe a faint galaxy and find that a spectral line normally found in the visible part of the…
A: The wavelength at which we see absorption lines are unique in themselves. This was used by…
Q: We know that there are small particles (called dust) in the galaxy which dim the light coming from…
A: A galaxy is a large assembly of stars, gas, and dust, held together by gravity.
Q: Write down the Doppler formula for light as an equation. Explain each letter's meaning. Then compute…
A:
Q: solar masses. (Hint: Use the formula for circular velocity, V. = VS"; make sure you convert relevant…
A: Given Data: The orbital velocity of a globular cluster is, ve=417 km/s The distance from the centre…
Q: Based on what you know about observations of the interstellar medium at wavelengths other than for…
A: SOlution: Select teh coresct stement aboutt eh interstellar medium for the wavelentghs.
Q: The Virgo galaxy Cluster Much smaller than the Local Group. Contains 35 galaxies.…
A: the Virgo cluster forms the heart of the larger Virgo supercluster that comprises approximately…
Q: The very first "image" of a black hole, at the centre of galaxy M87, was recently taken by the Event…
A: Given: The wavelength of the hydrogen line is λ = 21 cm The diameter of the earth is D = 12742 km…
Q: Among the globular clusters orbiting a distant galaxy, one is moving at 534 km/s and is located 14…
A: Given data: Speed of the globular clusters around the galaxy is, v= 534 km/s= 534000 m/s Distance of…
Q: Read the questions slowly and answer with precise and long details about each of the questions.…
A: The Whirlpool Galaxy, also known as Messier 51 or M51, is a spiral galaxy located in the…
Q: Different wavelengths (frequencies) of light let us see different aspects of the galaxy, which type…
A: Required : The correct option.
Q: classification helped Darwin understand how creatures evolve. How has classification helped you…
A: Our universe contains million number of stars. These stars continuously emit light radiation, heat…
Q: Suppose that stars were born at random times over the last 1010 years. The rate of star formation is…
A: Given that, The total number of stars in the Milky way is N=8×1011 And the stars were born at random…
Q: 8. If a galaxy has an apparent radial velocity of 2000 km/s and the Hubble constant is 72 km/s/Mpc,…
A: Using Hubble's law we can solve this
Q: Black Hole Accretion Disk. Part A: If the inner accretion disk around a black hole has a…
A:
Q: Write down the Doppler formula for light as an equation. Explain each letter's meaning. Then…
A: Light travels without any medium, so unlike sound for light, the Doppler shift for light that…
Q: What are globular clusters and what did the ones in the Milky Way help us to measure?
A: SPACE AND ASTRONOMY
Q: If the sun is 4.6 billion years old, how many times has it orbited the Milky Way? (The sun is 8,300…
A:
Q: 2. Suppose an absorption line in a spectrum of light from a very distant galaxy is 5015 Angstroms.…
A: Write the expression for the Dopler’s effect and solve for the speed (v) of the separation, that is…
Q: The first stars to form in our galaxy a. had circular orbits. b. had highly elliptical…
A: Population 1 stars are the newer and younger stars.
Q: Describe the age and temperature of stars that make up spiral galaxies and their location.
A: A galaxy can be bombarded by other, smaller galaxies. Even if a galaxy is isolated, internal…
Q: Write down the Doppler formula for light as an equation. Explain each letter's meaning. Then compute…
A: Doppler effect is a common phenomenon that we observe in our everyday lives. For instance, if you…
Q: Assume that the orbital speed of a star is measured at a distance of 15 kpc from he center of our…
A:
Q: Imagine that you have achieved immortality and you used it to travel outside of the Milky Way (you…
A: If you were to leave the Milky Way and travel at 1/10th of the speed of light, it would take you…
Q: Hotter, more massive stars are virtually absent from globular clusters. What does this tell us?…
A: Globular clusters are clusters of stars, that are nearly symmetrical and round shaped clusters.…
Q: 3 Billion Light-years 2 Billion 2 Billion Light-years Light-years 2.5 Billion 2.5 Billion…
A: Introduction: Hubble's law is the observation that galaxies are moving away from the Earth at speeds…
Q: If a quasar is 1,360 times more luminous than an entire galaxy, what is the absolute magnitude of…
A: The absolute magnitude of the Milky Way galaxy is mA = - 21 FB/FA = 1360 Let mB = absolute…
Q: why does the galaxy shown below have so much dust in its disk? How big do you suppose the halo of…
A: A halo is an extended, almost spherical component of a galaxy which extends beyond the main, visible…
Q: The surface brightness profiles of spiral galaxy disks follow the Sersic formula with n = 1. How…
A:
Q: describe the characteristics of the various kinds of interstellar gas (HII regions, neutral hydrogen…
A: Star formation is generally more active in the denser, inner part of the Milky Way than in the outer…
Q: A star in the Milky Way that is about 60 percent of the way out from the center of the galaxy has an…
A: Answer: Detail solution in below.
Q: Which of the following best describe the reasons we have to infer that a supermassive blackhole…
A: Actually the blackhole is a very higher density object . According to the general theory of…
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- Assume that an average globular cluster is 25 pc in diameter. If you observe a galaxy that contains globular clusters that are 9 arc seconds in diameter, how far away is the galaxy? (Hint: Use the small-angle formula).Can someone help with this?Astronomy Question: Read the questions slowly and answer with precise and long details about each of the questions. Answer correctly and follow my guidelines for a long and wonderful review after results. Your target/main observable galaxy is the whirlpool galaxy. Target: Whirlpool Galaxy Object Type: Galaxy Distance: 37 million light-years Constellation: Canes Venatici. DO NOT COPY AND PASTE OTHER WORK OR THINGS FROM THE INTERNET, use your own words. In 500 words, please explain the relevance of this object to the physics course material in university andits importance to astronomy. (Some question you may seek to answer are: What beyond the objectitself is learned by studying this class of objects? What sorts of telescopes and observations would beneeded for more detailed, broader reaching studies of this source and objects of its nature?)
- Part A Decide whether the statement makes sense (or is clearly true) or does not make sense (or is clearly false). The star-gas-star cycle will keep the Milky Way looking just as bright in 100 million years as it looks now. This statement does not make sense. The blowouts of gas from the disc will deplete the gas from the disc of the Milky Way in abiut 10 million years This statement makes sense. Disk of the Milky Way consist enough gas to sustain a few billion years of star formation. This statement makes sense. Most of the bright stars of spiral arms have light expentancies significantly greater than 100 million years. This statement does not make sense. The brightest stars of spiral arms of the Milky Way have life expentancies of about 10 million years. Submit Request AnswerWhich of the following statements best describes our galaxy, the Milky Way? O A bulge dominated system, with little or no disk, approximately 27,000 light years across. A disk 100,000 lightyears across filled with gas and stars, with a bulge of older stars in the galaxy centre. A disk 27,000 light years across with a bulge of gas and newly formed stars in the galaxy centre. O A spherical (elliptical) galaxy, 100,000 lightyears across, with no gas and no new stars.Given an image of a disk galaxy, you have measured that the average surface brightness at two radii (R = R1 and R = R2) are I1 and I2 respectively. The disk surface brightness profile has the exponential form of I(R) = I0 e(-R/Rd). What are the values of I0 and Rd for this disk?
- What evidence can you cite that our galaxy has a galactic corona?The Milky Way grew through merging with many smaller galaxies. What are the observational signatures of this process? O The motion of old stars in the bulge and halo of our galaxy are randomly orientated, meaning they were formed from collisions of small, accreted, galaxies all on different paths. O The ordered motion of the bulge / halo stars means that they came from many objects. The random motions of stars in the disk means it was formed from collisions of small, accreted, galaxies. O The motion of young stars in the disk are all in the same direction, meaning they came in as seperate objects.Figure 2 shows the "rotation curve" of NGC 2742. It plots the “radial velocity (V)" (how fast material is moving either toward or away from us) that is measured for objects at different distances (R = radius") from the center of the galaxy. The center of the galaxy is at 0 kpc (kiloparsecs) with a speed of 9 km/sec away from us. (These velocities have been corrected for the observed tilt of the galaxy and represent true orbital velocities of the stars and gas.) 200 100 U4779 -100 As you can see, one side of the galaxy is moving with a negative velocity (spinning toward us), while the other side has a positive velocity (spinning away from us). Using Newton's gravity equation, we will be able to determine the gravitational mass of the entire galaxy and how the mass varies versus distance from the galaxy's center. -200 -8 8 -4 Radius (kpc) Read the following text carefully and follow the instructions: Select five radii spaced evenly from 0-10 kpc across the galaxy. Your selections should…
- The hydrogen Balmer line has a wavelength of 486.1 nm. It is shifted to 565 nm in a galaxy's spectrum. What is the radial velocity (in km/s) of the galaxy? (Indicate the direction with the sign of your answer.)Read the questions slowly and answer with precise and long details about each of the questions. Answer correctly and follow my guidelines for a long and wonderful review after results. Your target/main observable galaxy is the whirlpool galaxy. Target: Whirlpool Galaxy Object Type: Galaxy Distance: 37 million light-years Constellation: Canes VenaticiDO NOT COPY AND PASTE OTHER WORK OR THINGS FROM THE INTERNET, use your own words. In 500 words, compare and contrast the specific object to at least 2 other objects in its sourceclass (eg. if it's an isolated star, to different types of isolated stars). Explain both observational andphysical differences, as well as what the comparison teaches us about the source class in general.