How does a contracting protostar convert gravitational energy into thermal energy?
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: Why are metals less abundant in older stars than in younger stars?
A: Answer: The metals which basically are non hydrogen and helium material are produced or created in…
Q: of a star occur
A: Possible stages of a star that occurs are as follows:
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: A star's Zero Age Main Sequence (ZAMS) radius R, luminosity L, and effective temperature Teff depend…
A: Given: Zero Age Main Sequence is beginning point of the main sequence of the star. The radius at…
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…
Q: If you assume that a globular cluster 2 arc minutes in diameter is actually 27 pc in diameter, how…
A: The expression for the distance from small angle formula, Angular diameter206265=linear…
Q: The Hydra super cluster is at a distance of about 800 MParsec. What is the recessional velocity?
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Q: All of the single red-dwarf stars that ever formed are still on the main sequence today. (T/F)
A: Main sequence stars are those which are fusing hydrogen to helium in their cores. Almost 90% of the…
Q: How do the temperature and size of a Sun-sized star fluctuate over the course of its life?…
A: Immediate Assistance : You cannot wait for help if you require quick aid. Because it also implies…
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: 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: For each type of stellar explosion, identify its progenitor star
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Q: A red giant loses a solar mass in 150,000 years via a superwind. After 0.9 million years, it has a…
A: Dear student, as per the Qn-+A guidelines I will answer the first question only. Please, ask the…
Q: If a giant molecular cloud is 60 pc in diameter and a shock wave can sweep through it in 3 million…
A: Given the diameter of a giant molecular cloud is d = 60 pc (Parsec) time taken to sweep the cloud is…
Q: How does the presence of degenerate matter in a star trigger the helium flash?
A: As per the Pauli Exclusion Principle not more than two electrons inside an atom can have the same…
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 you assume that a globular cluster 6 arc minutes in diameter is actually 18 pc In diameter, how…
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Q: If a contracting protostar is three times the radius of the Sun and has a temperature of only 3000 K…
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Q: How is the turnoff point on the H-R diagram of a cluster related to the cluster’s age?
A: Given:- The turnoff point on the H-R diagram of a cluster related to the cluster’s age Explain:- How…
Q: Why massive stars are short lived?
A: A massive star has a shorter life spanthan an average star because of fasterhydrogen fuel…
Q: With a 14 solar mass star example. Describe how its position on an H-R diagram will change as it…
A: A star with 14 solar masses is categorized as a B1 type star. When a significant amount of the…
Q: ar formation, themselves f
A: Newton formulated equations which showed the gravity behavior. He determined the force of gravity…
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 you assume that a globular cluster 2 arc minutes in diameter is actually 19 pc in diameter, how…
A: Given, a globular disc cluster is 2 arc minutes in diameter. The actual diameter is d = 19 pc let D…
Q: If a contracting protostar is eight times the radius of the Sun and has a temperature of only 2190…
A: The relation between the radius and luminosity of two stars is as follows: LLSun=RRSun2TTSun4…
Q: Why are the Hll regions around 0 stars generally larger than those around B stars?
A: HII region is the interstellar region where atomic hydrogen is ionized. It is a cloud of partially…
Q: A planet orbits 1 AU from a star that is 2 times as massive as our Sun. How does the star's…
A: Let, The luminosity of the star = L The luminosity of the Sun = LSun The mass of the star = M 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: Why don't red dwarfs become giant stars?
A: Red dwarf stars or M-type stars are small stars with a mass of 0.08 to 0.6 times the mass of 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: Protostar
A: Protostar is
Q: you assume that a globular cluster 4 arc minutes in diameter is actually 27 pc in diameter, how far…
A:
Q: Do stars of all masses acquire most of their mass via gravitational collapse of a single dense core?
A: Since you have posted multiple questions, only the first one is answered here. Please post the…
Q: A planetary nebula expanded in radius 0.2 arc seconds in 10 years. Doppler measurements show the…
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Q: What critical event must occur in order for a protostar to be- come a star?
A: Stars are formed from interstellar clouds. When the mass becomes high enough the molecular cloud…
Q: a)What type of supernova is most luminous in light? (b) What kind of star results in such an…
A: a) Supernova is an astronomical event take place when a white dwarf star exploded. When the white…
Q: 2. A solar-type star is seen with an apparent magnitude my = 30. Assuming that there is no…
A: As we know that,The distance modulus is a common technique of measuring distances in astronomy. It…
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: How massive have to be a main-sequence star in order to survive for at least 15 billion years?
A: The objective of this question is to determine the mass of a main-sequence star that would allow it…
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: What is fusion? How does it happen inside a star?
A: Nuclear fusion is the process by which two light atomic nuclei combine to form a single heavier one…
Q: Why do old stars have less metal compared to new ones?
A: As per the Big Bang theory, the universe expanded from an initial high-density state. In the…
Q: Sun-like star transitions into a Red Giant __________. Group of answer choices after the planetary…
A: Solution Given dataSun like star transitions into a Red Giant ..........Which option is correct…
Q: (Astronomy) Supernova Ejection Times. Observations show that the gas ejected from SN 1987A is…
A:
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