What temperature would interstellar dust have to have to radiate most strongly at 100 micro meter?
Q: Consider a disk with disk temperature T = T0(r/AU)−1 with T0 = 200K.and surface density given by Σ =…
A: The objective of this question is to find the difference between the orbital speed of the gas at 1…
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Q: If a prostellar disk is 260 au in radius and the disk plus the forming star together contain 7 solar…
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Q: What would most bright nebulae look like if there were no interstellar dust?
A: A nebula is defined as a large region of interstellar clouds made of dust, hydrogen, helium, and…
Q: What is the orbital speed at the disk's outer edge in kilometers per second if a protostellar disk…
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Q: The water molecules now in your body were once part of a molecular cloud. Only about onemillionth of…
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Q: The dust in a molecular cloud has a temperature of about 34 K. At what wavelength (in nm) does it…
A: temperature = T = 34 K wavelength = λmax=?
Q: If a contracting protostar is seven times the radius of the Sun and has a temperature of only 2030…
A: The luminosity (L) of the contracting protostar relative to the sun be defined as, LL⊙=RR⊙2TT⊙4…
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A: Concept used: Mass is found by multiplying by density and volume of sphere.
Q: You observe a spectral line from an emission nebula at a wavelength of 723 x 10-9 m. If you are…
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Q: Interstellar dust is found to be at a temperature of 1000 K. At what wavelength will be the…
A: Interstellar dust is formed from dying stars. During supernova explosions, the outer layer of the…
Q: A typical dense core of an interstellar gas cloud has a diameter of 0.2 pc and a mass of 2 solar…
A: The diameter of the gas cloud is defined as 0.2 pc. Therefore, the radius of the gas cloud will be…
Q: What factors resist the contraction of a cloud of interstellar matter?
A: Interstellar matter is defined as the space between the stars' systems in the galaxy. It is made…
Q: If a protostellar disk is 210 AU in radius and the disk plus the forming star together contain 4…
A: the orbital speed is, v=GMr one solar mass is 1.989×1030 kg and 1 AU is 1.496×1011 m. thus,…
Q: At the average density of a star-forming molecular cloud, about 900 atoms per cm3, determine how…
A: Given:- M=2 times 1030 kg density=900 atoms/cm3= 1.51 times 10-18 kg/m3 Find radius of the sphere…
Q: If interstellar dust makes an RR Lyrae variable star look 5 magnitude fainter than the star should,…
A: Given the magnitude get fainter by 5. Therefore,
Q: Now, rank the same objects by increasing temperature. For spherical objects, use the surface…
A: Intercloud gas: The gases other than intersteller gases present in space are known as intercloud…
Q: Please answer within 90 minutes.
A: Part a. Part b. Part c.
Q: If a globular cluster contains 2 million stars and is 28 pc in diameter, what is the average…
A: This problem can be solved by first calculating the average volume reserved for one star and then…
Q: If the hottest star in the Carina Nebula has a surface temperature of 51,000 K, at what wavelength…
A: Concept: "The Wien's displacement law states that the wavelength carrying maximum energy is…
Q: The dust in a molecular cloud has a temperature of about 50 K. At what wavelength does it emit the…
A: A blackbody is an ideal object that absorbs all the radiation that falls on it. The blackbody then…
Q: What is hydrostatic equilibrium in stars.
A: The interstellar medium is mostly made of hydrogen. When the mass of the interstellar medium becomes…
Q: If an open cluster contains 450 stars and is 21 pc in diameter, what is the average distance between…
A: Given Number of stars in an open cluster (n) = 450 Diameter of the cluster Dclu = 21 pc…
Q: An astronomer is observing a binary star that is 15 pc15 pc away. The two stars have an orbital…
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Q: At the average density of of a star-forming molecular cloud, about 1180 atoms per cm3, determine how…
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Q: Why do two different gasses always have different spectral signatures?
A: Given Why do two different gasses always have different spectral signatures, as following below.
Q: Why are interstellar lines so narrow?
A: Spectral lines are formed due to electrons making transitions between the energy levels inside the…
Q: If a protostellar disk is 240 AU in radius and the disk plus the forming star together contain 9…
A: Given Radius r = 240 AU Mass m = 9 Solar mass Known Values 1 AU = 1.496 x 1011 m 1 solar mass =…
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Q: describe the characteristics of the various kinds of interstellar gas (HII regions, neutral hydrogen…
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Q: The RR Lyrae stars in a globular cluster have apparent magnitudes of 14. Assuming an absolute visual…
A: Given that the apparent magnitude mv=14 and the absolute visual magnitude Mv=0.5, substituting…
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- If a protostellar disk is 210 AU in radius and the disk plus the forming star together contain 4 solar masses, what is the orbital speed at the outer edge of the disk in kilometers per second? (Hint: Use the circular orbital velocity formula )(a) Rank the following components of the interstellar medium in order of the wavelengths at which they are observed, longest wavelength first: clouds of neutral hydrogen, coronal gas, interstellar dust, nebulae. Longest to Shortest? (b) Rank the same material in order of decreasing temperature from hottest to coolest. Hottest to Coolest?If an open cluster contains 650 stars and is 27 pc in diameter, what is the average distance between the stars? (Hint: On average, what share of the volume of the cluster surrounds each star?)
- If an open cluster contains 350 stars and is 48 pc in diameter, what is the average distance between the stars? On average what, share of the volume of the cluster surrounds each star?why do dark streaks appear in visible light images of the Trifid nebula, but appear bright in an infared imageif a protostellar disk is 260 au in radius and the disk plus the forming star together contain 7 solar masses what is the orbital speed at the outer edge of the disk in km per second. use the circular orbital velocity formula
- What evidence can you cite that the interstellar medium contains both gas and dust? (Select all that apply.) (1)The dust of the interstellar medium can be detected from the emission lines of elements heavier than iron. (2)The dust of the interstellar medium can be detected by the extinction of light from distant stars. (3)The dust of the interstellar medium can be detected by the scattering of blue light from distant or embedded objects. (4)The gas of the interstellar medium can be detected from the radiation of ultraviolet photons. (5)The gas of the interstellar medium can be detected from the radiation of photons of wavelength 21 cm. (6)The gas of the interstellar medium can be detected from the absorption lines present in the light from distant stars, which must be caused by a medium of a density and temperature other than that of the stars emitting the light.The answer is not 0.04. I need help!Molecular cloud can release degeneracy pressure in form of radio and infrared photons True or False