What do you mean by white dwarfs?
Q: Need help asap on this short question... will thumbs a completed answer.. thanks in advance Describe…
A: Concept: Stellar evolution is the process by which a star changes over time. The lifespan of a star…
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: Which of the following is NOT the result of the death of a massive star? Select one alternative:…
A: Hypernova is the type of phenomenon that happens when a massive star collapses into this and results…
Q: A 46M Sun main sequence star loses 1 MSun of mass over 105 years. (Due to the nature of this…
A: Total mass is The main sequence star loses of mass over Find:(a) The solar mass lost in a year.(b)…
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: 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: Describe each of the following nebulae and how they can be observed: HIl region Cold hydrogen gas…
A: (1) HII region (2) Cold hydrogen gas (3) Dust clouds
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: What four (4) stars are not as bright (luminous) as our Sun? JUST NAME 4 STARS THAT ARE NOT AS…
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Q: The telescope and CCD camera described in question 2 are scheduled to observe the star cluster M67…
A: The cluster M67 is never visible in the sky from London so we should abandon any plans to observe…
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: Choose the correct statements concerning spectral classes of stars. (Give ALL correct answers, i.e.,…
A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…
Q: For each of the following parts, find the most possible type of object by considering the…
A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: Fill in blank missing word A Blank variable is type of bright giant that is in the instability strip…
A: This problem can be solved by knowing some properties of Cepheid variable stars.
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: 10 to 1,000 solar masses.
A: HI regions: HI region is a cloud in the interstellar medium composed of neutral (non-ionized)…
Q: 4. Our Sun now spins once every 25 days and was formed from the gravitational contraction of an…
A: Given data The time taken by the sun is given as T1 = 25 days. The distance of the cloud is given…
Q: A turnoff point corresponding to the oldest star cluster would occur at what spectral…
A: Turnoff point in HR diagram is the point where the star leaves the main sequence branch
Q: Calculate the size of the Schwarzschild radius for the Sun. Choose the option below that most…
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Q: Which of the following stars are bright and very cool
A: The Supergiants are cool stars, which are very large and really bright. they're located towards 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: How large is our supermassive black hole in terms of the size of the Earth’s orbit? (Divide the…
A: The Schwarzschild equation for the radius of the event horizon around a black hole is given by the…
Q: What causes the dark lines in the solar spectra?
A: The dark lines in the solar spectrum appear at around 460 nm. This is where we find the maximum…
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: Indicate whether the following statements are true or false. (Select T-True, F-False. If the…
A: Indicate whether the following statements are true or false A) White dwarfs are small dense objects…
Q: Calculate the exchange arc
A:
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: 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: What are the two possibilities for the final state of a close, massive binary system?
A: For a star in a binary system, there is a region surrounding the star where the orbiting object is…
Q: does the H-R diagram show? Explain the main sequence of stars.
A: The H-R diagram is Hertzsprung- Russell Diagram, it is a graph in which absolute magnitude of stars…
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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Q: How many times hotter than our sun is the hottest type O star, which has a surface temperature…
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Q: What do you mean by Neutron stars?
A: The neutron star is formed when a massive star runs out of fuel and starts collapsing. When a star…
Q: List the following 5 terms in order through a stars life cycle (starting with the sun), through the…
A: When a star like the Sun forms, it is hot and glows. This phase is called the red giant phase. After…
What do you mean by white dwarfs?
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