Sun-like star transitions into a Red Giant __________. Group of answer choices after the planetary nebula stage once carbon burning ends in the core During the T-Tauri phase before and after the helium flash
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Sun-like star transitions into a Red Giant __________.
Group of answer choices
after the planetary nebula stage
once carbon burning ends in the core
During the T-Tauri phase
before and after the helium flash
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- Describe how energy generated in the core of a 1-solar-mass star gets to the star's surface.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
- A red giant that was originally a 9.5MSun main-sequence star loses a solar mass in 100,000 years via a superwind. What is this mass loss rate in units of solar masses per year? (the answer is not 0.000095 solar masses per year). Additionally, at this mass loss rate, what will the red giant's mass be after 0.5 million years? (Enter your answer as a multiple of MSun.)Match each characteristic below of a one-solar-mass star to its appropriate phase. Answer M for Main-sequence Star, or P for Protostar. If the first is M and the rest P, enterMPPPPPP). A) energy generated by nuclear fusion B) pressure and gravity are NOT precisely balanced. C) surface radiates energy at same rate that core generates energy D) radius much larger than the Sun E) energy generated by gravitational contraction F) lasts about 10 billion years G) luminosity much greater than the SunIn the star clusters shown, which one is younger and why?
- What are the main products of the fusion reactions that take place in low mass main sequence stars?What causes an aging giant star to produce a planetary nebula?The evolutionary track of a medium mass star is shown below. Which cut-away core diagram correctly illustrates the source of fusion energy when the star is at the indicated position? (A) H>He (B) He>C (C) (D) H>He H>He He>C Не Temperature А. (А) В. (В) C. (C) D.(D) Luminosity -