Why is it that stars of greater mass (and thus possess more fuel for nuclear fusion) spend less time on the main sequence of the H-R diagram than their lower mass counterparts?
Q: Star A and Star B are both on the main sequence. Star A is 74 times more luminous than Star B. What…
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Q: In a binary star system, the average separation between the stars is 4.0 AU, and their orbital…
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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: Why are there few spectroscopic binaries in which the stars are separated by more than 10 AU?
A: A binary star system is formed when two stars come close enough that they form an orbit around the…
Q: Suppose a star has the same luminosity as our Sun (3.8x1026watts3.8x1026watts) but is located at a…
A: as per our guidelines, we can answer only first question. please resubmit rest questions for…
Q: A pulsating variable star with a period of 10 days would be a Cepheid having an absolute magnitude…
A: Pulsating variable star are made by expansion and contractions in the outer layers of any stars. Due…
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: What are the approximate spectral type, temperature, absolute magnitude number, and luminosity of…
A: Required : Spectral type, absolute magnitude, temperature and luminosity of star E.
Q: where do hydrogen-buring stars spend most of their time on the H-R Diagram? Is it the main sequence,…
A: Hydrogen burning stars are those stars which burns hydrogen as their dominant fuel. Horizontal…
Q: How does the extreme temperature sensitivity of the CNO cycle affect the structure of stars?
A: As a result of the extreme temperature dependence of CNO burning, those stars that are dominated by…
Q: Wher would a star be located in the main sequence relative to the sun if its mass is 10 times that…
A: The position of the sun is in the middle of the H-R diagram due to its moderate temperature,…
Q: What would a dead star of 2.5 solar masses be?
A: In massive stars the density and temperature of the core gain as much amount of heat to fuse the…
Q: A star had an apparent magnitude m = 2.1 and an absolute magnitude M = 1.6 1) Calculate the distance…
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Q: If the two stars orbit in a such a way that the big star is 4 AU from the center of the mass and the…
A: Given:distance of larger star from COM, ra = 4 AUdistance of smaller star from COM, rb = 12 AUtotal…
Q: Why massive stars are short lived?
A: A massive star has a shorter life spanthan an average star because of fasterhydrogen fuel…
Q: Consider two stars on the main sequence, A and B. Star A has a mass of Мо Star B has a mass of 0.2…
A: Solution attached in the photo
Q: When two stars are in the same star system, they can affect each other’s evolution. Two stars in the…
A: Two stars in the same system might evolve at a different pace, depending on their distances in the…
Q: At what wavelengths do stars of surface temperates 20 000 K, 10 000 K, and 3000 K have their peak…
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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: Consider two stars on the main sequence, A and B. Star A has a mass of 9. Мо Star B has a mass of…
A: Solution attached in the photo
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: calculate the main sequence lifetime of (a) a 4M☉ star, and (b) a 0.75M☉ star. Express the lifetimes…
A: The lifetime of the main sequence stars is given as: τMSτSun = MMsun-2.5 where, τsun = 1010 years
Q: On a H-R diagram for main sequence stars, as temperature increases, brightness usually increases…
A: Required: Variation of brighness with temperature in HR diagram.
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: Why does the orbital period of a binary star depend on its mass?
A: A binary system is formed when two massive astronomical objects start orbiting each other around a…
Q: If a T Tauri star is the same temperature as the Sun but is seventeen times more luminous, what is…
A: Given that The temperature of the Tauri Star(Tt) is the same of the sun( Tsun).…
Q: You've just discovered a new X-ray binary, which we will call Hyp-X1 ("Hyp" for hypothetical). The…
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Q: If a T Tauri star is the same temperature as the sun but is ten times more luminous, what is its…
A: The energy radiated by a star per second is known as its luminosity and is directly proportional to…
Q: Star A and Star B are both on the main sequence. Star A is 63 times more luminous than Star B. What…
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Q: What is the size of a star with a temperature three times as hot as the sun and the luminosity of…
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Q: why are Cepheid variable stars good distance indicators? What about supernovae?
A: Named after delta-Cephei, Cepheid Variables are the most important type of variable because it has…
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: We will take a moment tổ compare ROw BrigriLIy a Wiite uwan stal sines Compdleu 10 a leu glant 3lai.…
A: Given: Tw=10,000 KTR=5,000 KRw=1100RsunRR=100Rsun we have to find ratio of Luminosity: LRLw=?
Q: If a T Tauri star is the same temperature as the Sun but is eighteen times more luminous, what is…
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Q: If a star has a surface temperature of 3000 K but a luminosity 150 times greater than our Sun, what…
A: luminosity = 150 times greater than Sun, temperature = 3000 K what size is this star?
Q: What would a dead star of 1.1 solar masses be
A: White dwarfs are remnants of dead stars. White dwarfs are very dense and the mass of a white dwarf…
Q: What are the on the axes of a Hertzsprung-Russell diagram? (b) Name one thing you can tell about a…
A: Hertzsprung-Russell Diagram plots the temperature of the start against their luminosity (or) colour…
Q: O stars
A: In the H-R diagram we see that stellar masses decrease downward along the main sequence. At the…
Q: Given two stars in a binary star a total distance of 16 AU apart and an orbital period of 4 years…
A: Two Masses in the universe attract each other by a gravitational force. This force is directly…
Q: yades Cluster Age. This chapter states that the Hyades cluster is 650 million years old. What is the…
A: Given: This chapter states that the Hyades cluster is 650 million years old. Introduction: What we…
Q: Finally estimate the lifetime of an M0 spectral type star if the total mass of the star is M =…
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Q: What is the life expectancy (in years) of a 10 M⊙ main-sequence star? What is the life expectancy…
A: Required : The life expectancy of stars.
Q: A main sequence star of mass 25 M⊙has a luminosity of approximately 80,000 L⊙. a. At what rate DOES…
A: Given information: The mass of the star (m) = 25M⊙ The luminosity of the star (L) = 80000L⊙ part a):…
Q: What is the relationship between the color of a reflection nebula and the color of the star that…
A: A nebula is a collection of cosmic dust, hydrogen, and other molecular clouds. They act as a region…
Q: How do the spectra of H II regions differ from the spectra of reflection nebulae? Why?
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Why is it that stars of greater mass (and thus possess more fuel for nuclear fusion) spend less time on the main sequence of the H-R diagram than their lower mass counterparts?
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