What critical event must occur in order for a protostar to become a star?
Q: In a binary star system, the average separation between the stars is 4.0 AU, and their orbital…
A:
Q: What star is a white dwarf that is much more dim and hotter than the sun. and which type of stars…
A: 1.carbon-oxygen white dwarfs 2. hydrogen- fusing white dwarfs 3. Sirius B 4. Procyon B 5. Stein 2051…
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: of a star occur
A: Possible stages of a star that occurs are as follows:
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: 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: Which stars are associated with a planetary nebula? black holes, neutron star's, white dwarf or main…
A: Required : What are planetary nebula associated with.
Q: Put the steps of the life cycle of a star in order.
A: Required : Steps involved in star cycle.
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: For a main sequence star with luminosity L, how many kilograms of hydrogen is being converted into…
A:
Q: If a contracting protostar is three times the radius of the Sun and has a temperature of only 3000 K…
A:
Q: Suppose a protostar has a luminosity of 157,341 Lo and a surface temperature of 4,540 K (Kelvins).…
A: Given: Luminoscity of protostar, 157341 LS Surface temperature of protostar, 4540 K Surface…
Q: Which of the following is least reasonable regarding the mass of stars? Group of answer choices…
A: Stars are of different sizes and they have their own set of characteristics based on multiple…
Q: Assuming that at the end of the He burning phase of the stellar core (r R_core). Calculate the…
A:
Q: What causes a star to move off the main sequence?
A:
Q: What is the free-fall time of a 10 MSun main-sequence star? O 100 hours 10 hours O 1 hour O 0.1…
A: The problem is based upon free fall of a star. Here the given star is having the mass 10 times the…
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: What is the mass of a star with a main-sequence lifetime of 4 billion years? 17 X solar masses
A: According to stellar theories & observations the average lifetime of main-sequence stars has…
Q: If an open cluster contains 450 stars and is 21 pc in diameter, what is the average distance between…
A: Given Number of stars in an open cluster (n) = 450 Diameter of the cluster Dclu = 21 pc…
Q: When a region of a molecular cloud collapses, a protostar is formed. How do the temperature and…
A: Protostars form primarily in the spiral arms of galaxies in the modern era, which spans at least 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: Star A and Star B are both on the main sequence. Star A is 63 times more luminous than Star B. What…
A:
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: A planetary nebula expands at 32 km/s. How far will it expand (in km) in 0.6 million years?
A: Expansion rate of the Nebula: It can be defined as the distance up to which the nebula expands in a…
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: 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: 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: describing the various stages in the life of a 1.0 solar mass star, 0.5 solar mass star, and a 3.0…
A: In this question we have to describe the life of a 0.5, 1.0 and 3.0 solar mass stars.
Q: This star has a mass of 3.3 MSun. What is the main sequence lifetime of this star? You may assume…
A: The main sequence lifetime is given as:t α1M2.5it is given star has mass of 3.3 MSunSo,…
Q: As a cluster of stars begins to age, which type of star in the cluster will move off the main…
A:
Q: What determines the mass distribution of forming stars, the initial mass function (IMF
A: Stars are formed when gas, giant clouds, dust etc. present abundantly in space come together due to…
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: Place the following events in the formation of stars in the proper chronological sequence, with the…
A: The question can be solved as follows
Q: For the PP chain 0.7% of the mass participating in nuclear fusion is liberated as energy which…
A:
Q: Finally estimate the lifetime of an M0 spectral type star if the total mass of the star is M =…
A:
Q: Shown are three main sequence stars. Each one is a different size, but the color is not shown. Rank…
A: Given in the question are 3 main sequence stars. Each one has a different size. We need to rank them…
What critical event must occur in order for a protostar to become a star?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- What is the relationship between the color of a reflection nebula and the color of the star that illuminates it?Betelgeuse is a nearby supergiant that will eventually explode into a supernova. Let's see how awesome it would look. At peak brightness, the supernova will have a luminosity of about 10 billion times the Sun. It is 600 light-years away. All stellar brightnesses are compared with Vega, which has an intrinsic luminosity of about 60 times the Sun, a distance of 25 light-years, an absolute magnitude of 0.6 and an apparent magnitude of 0 (by definition). a) At peak brightness, how many times brighter will Betelgeuse be than Vega? b) Approximately what apparent magnitude does this correspond to? c) The Sun is about -26.5 apparent magnitude. What fraction of the Sun's brightness will Betelgeuse be?Describe how energy generated in the core of a 1-solar-mass star gets to the star's surface.
- If a contracting protostar is two times the radius of the Sun and has a temperature of only 1890 K, how luminous will it be relative to the Sun?Note: The answer should be typed. AsapBetelgeuse is a red giant at a distance of 428 light years. In the future it will become a supernova similar to Tycho's supernova which was observed in 1572 and lies at a distance of 9800 light years. At its peak, its brightness was similar to that of Venus (which has a peak apparent magnitude of -4). What might we expect the peak apparent magnitude of the Betelgeuse supernova explosion to be?
- Which 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 massiveA protostar will continue to collapse due to gravity until it reaches the main sequence, and then gravitational collapse will stop when a. the formation of star-globularsb. atoms degenerate at the core of the starc. the fusion of hydrogen d. the fusion of heliume. the fission of hydrogenWhat evidence is there that star formation has occurred recently?
- In the star clusters shown, which one is younger and why?Why are red dwarfs very dim.Suppose a protostar has a luminosity of 39,473 L⊙ and a surface temperature of 4,130 K (Kelvins). What is the radius of this protostar? [Enter your answer as a multiple of the Sun's radius. I.e., if you find R = 20 R⊙ , enter 20. This problem is easier if you start with the relevant equation and create a ratio using the Sun's values. Recall that the Sun has a surface temperature of 5778 K. ]