What is the orbital speed at the disk's outer edge in kilometers per second if a protostellar disk is 260 au in radius and the disk and the developing star comprise 7 solar masses? make use of the circular orbital velocity formula

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…

Q: What is an emission nebula?

A: The space between stars and galaxies is filled with clouds of gas and dust. These clouds of gas and…

Q: Suppose a planetary nebula is 4.6 pc in diameter, and Doppler shifts in its spectrum show that the…

A: The diameter of planetary nebula is given as, D=4.6 pc. Then, the radius of planetary nebula is…

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: The water molecules now in your body were once part of a molecular cloud. Only about onemillionth of…

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Q: The Hydra super cluster is at a distance of about 800 MParsec. What is the recessional velocity?

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Q: How does a contracting protostar convert gravitational energy into thermal energy?

A: Stars are formed from clouds of gas present in the interstellar medium. Since the temperature is low…

Q: If a giant molecular cloud is a distance of 27 pc away from Earth and drifts at a speed of 27 km/s…

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Q: A giant molecular cloud is 30 pc in diameter and has a density of 339 hydrogen molecules/cm^3. What…

A: Concept used: Mass is found by multiplying by density and volume of sphere.

Q: Explain why the sky is blue and how that relates to reflection nebulae.

A: Dispersion. Despersion is a phenomena in which when light passes beteen 2 particle it disperses.

Q: A molecular cloud is 22 pc in diameter and is located 303 pc from Earth. What is its angular size on…

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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: Neutron Star Accretion Disk. If the accretion disk around a 2.25-solar-mass neutron star has a…

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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: We observe a star that is dstar​ away.  How much extinction would there need to be (i.e., what must…

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Q: Explain what makes the planetary nebula glow and what makes the supernova remnant glow. Which of…

A: Planetary nebulae and supernova remnants are both glowing celestial objects in space, but they are…

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: 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: What elements made up most of the nebulaein the very young Universe?

A: We have to find out what elements forms the early nebulae

Q: Suppose you observe a star orbiting the galactic center at a speed of 1100 km/s in a circular orbit…

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Q: A giant molecular cloud is 30 pc in diameter and has a density of 330 hydrogen molecules/cm^3. What…

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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: Observations show that the gas ejected from SN 1987A is moving at about 10,000 km/s. How long will…

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Q: When a region of a molecular cloud collapses, a protostar is formed. How do the temperature and…

A: Protostars form primarily in the spiral arms of galaxies in the modern era, which spans at least the…

Q: If our Sun were surrounded by a cloud of gas, would this cloud be an emission nebula? Why or why…

A: Emission nebulae are formed in regions surrounding young stars.   When a star is formed in the…

Q: There are 200000 AU radius clouds will form a star of 10 solar masses and the 150000 AU radius…

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Q: The ring around SN 1987A (see the figures below) initially became illuminated when energetic photons…

A: To calculate how long after the supernova SN 1987A the ring became illuminated, we need to consider…

Q: At the average density of of a star-forming molecular cloud, about 1180 atoms per cm3, determine how…

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Q: suppose a planetary nebula is 2.8 pc in diameter, and doppler shifts in its spectrum show that the…

A: Given information: The diameter of the nebula (D) = 2.8 pc = 2.8 (3.1×1013 km) = 8.68 ×1013 km The…

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: planetary nebula expands at 38 km/s. How far will it expand (in km) in 3 million years?

A: Here given nebula is expanding with given speed. As in 1 sec nebula expands 38 Km, In 3 million…

Q: A planetary nebula expands at 32 km/s. How far will it expand (in km) in 0.6 million years?

A: Expansion rate of the Nebula: It can be defined as the distance up to which the nebula expands in a…

Q: Astrology: An accretion disk of a protostar takes mass from the ___________ and gives mass to…

A: A proto star is not a star but a star in formation. An accretion disk is is rotating disk made up of…

Q: In which component of the interstellar medium do new stars form? O molecular clouds O HII Intercloud…

A: Interstellar medium is the medium between matter and radiation. The matter are gases (gas cloud),…

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 =…

Q: What temperature would interstellar dust have to have to radiate most strongly at 100 micro meter?

A: When stars die they will slowly send out their outer layers. This forms large clouds of dust and is…

Q: (Astronomy) Supernova Ejection Times. Observations show that the gas ejected from SN 1987A is…

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