the Sun?
Q: All stars start their lives with the same basic composition. What determines their differences? O…
A: Mass they formed with
Q: A star has a surface temperature of T = 10,000 K and a radius three times that of the Sun, R = 3R…
A:
Q: The surface of a star usually has the highest temperature O True O False
A:
Q: of a star occur
A: Possible stages of a star that occurs are as follows:
Q: Hertzsprung-Russell Diagram Blue or blue w White Vellow Red orange Red Rioe Supergl Beteigeuse Main…
A: The region of main sequence contains large number of stars than any other region. Therefore most of…
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: For each type of stellar explosion, identify its progenitor star
A:
Q: What is the most common type of star?
A: There are different types of stars in our universe. They are mainly categorized based on their mass,…
Q: Which of the following is least reasonable regarding a star's position on the HR diagram? Group of…
A: "White dwarfs are small and cool and are located in the lower left part of the HR diagram."This…
Q: What is the temperature of a star emitting light with a peak wavelength of 7,080 angstroms? T=…
A: Given : λmax = 7080 angstroms = 7080*10-10 m. From Wien's law the temperature of star is T =…
Q: What star has the largest stellar parallax as measured from opposite ends of the Earth's orbit about…
A: Parallax is the apparent displacement of an object because of a change in the observer's opinion.…
Q: The percentage of helium used immediately during a star’s helium flash phase is
A: It is a very brief phase
Q: Why does the luminosity of a star depend on both its radius and its temperature?
A: Luminosity is the radiant power emitted by star. The luminosity is measured in Watt or Joules per…
Q: What causes a star to move off the main sequence?
A:
Q: What is the luminosity of a star having three times the radius of the Sun and a surface temperature…
A: The luminosity of a star is a measure of the total amount of energy that is radiated by a star per…
Q: Suppose the distance to a star is doubled. Then the luminosity of the star is O Remains the same,…
A: Luminosity and apparent brightness are 2 different things. Luminosity is unique property of body and…
Q: What is the Sun's energy output (luminosity)? Group of answer choices About 4 x 1026 Watts About a…
A: We know that, Sun has radius of 695 x 106 m giving a surface area of 6.09 x 1018 m2 .
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: What is the color of the stars shown on the diagram that have the lowest surface temperature? O red…
A: Required: Color of the stars,
Q: In a laboratory, the Balmer-beta spectral line of hydrogen has a wavelength of 486.1 nm . If the…
A: Wavelength of (λ°) = 481.6 nm Difference of wavelength ∆ λ = λ- λ° = 486.1- 485.8 = 0.3 nm Speed of…
Q: On a Hertzsprung-Russell diagram, where on the main sequence would we find stars that have the…
A: We need to investigate where we find the largest main sequence stars in the H-R diagram.
Q: What is the luminosity of a 4-solar-mass main-sequence star?
A: The luminosity of a star is the amount of energy that it radiates per second. It can be considered…
Q: QUESTION 16 Use the figure shown below to complete the following statement: A low-mass protostar…
A: During the formation of a low-mass protostar, a protostar accumulates mass by accreting material…
Q: Match the spectral type and luminosity class to the letters shown on the Hertzsprung-Russell diagram…
A: Luminosity is directly proportional to the size of the star. On the basis of temperature and their…
Q: The main-sequence age of a star of 1M⊙ is about 1010 years. What is the main-sequence age of a star…
A: Answer the following question is
Which star is a white supergiant star that is brighter and hotter than the Sun?
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Solved in 2 steps
- Consider three main sequence stars: Star A is 14,500 K, Star B is 2,900 K, and Star C is 5,500 K. What are the colors of each of these stars?How many times hotter than our sun is the hottest type O star, which has a surface temperature 40,000 K? Number times hotter =A red giant star has a temperature of 3900 K and a luminosity of 13600 LSun. How many times bigger is this star than the Sun? Hint: You need the surface temperature of the sun for this problem. Use the value in the book, 5800K.
- A certain star has a temperature twice that of the Sun and a luminosity 64 times greater than the solar value. What is its radius, in solar units?List the following 5 terms in order through a stars life cycle (starting with the sun), through the remainder of its lifetime: a. Black dwarf b. Planetary nebula c. Red giant d. Star (Sun) e. White dwarfWhich statement is most logical? a First stars are thought to have been more massive than Sun because the materials used to make clouds were more abundant at the beginning b First stars are thought to have been more massive than Sun because the temperatures of the clouds that made them were higher because they consisted entirely of hydrogen and helium c First stars are thought to have been more massive than Sun because star-forming clouds were much denser early in time d First stars are thought to have been more massive than Sun because the clouds that made them were much more massive
- Consider two stars on the main sequence, A and B. Star A has a mass of 4 M⊙. Star B has a mass of 0.8 M⊙. By what factor is the luminosity of star A greater than the luminosity of star B?If the Sun is located at point F1, what is located at F2? a 12 b C F1 F2 Earth A star Nothing Sun Semi-major axis