What determine whether a star becomes a red giant, a white dwarf a neutron star or a black hole?

Q: Which of these will the Sun probably become in the very distant future? (choose all that apply)…

A: In about 5 billion years, sun will burn up all of the hydrogen in its core, it will swell into a red…

Q: of a star occur

A: Possible stages of a star that occurs are as follows:

Q: The radius of a typical white dwarf star is a just a little larger than the radius of Earth, but a…

A:

Q: What is the heaviest element likely to be produced in fusion processes in stars?

A: iron is the heaviest element stars can make.

Q: Describe the evolution of a very low mass start a red dwarf, birth to death

A: Answer Low mass stars in their dating stages shed their outer layers transfer most of their mass…

Q: A group of graduate students, bored during a cloudy night at a the observatory, begin to make bets…

A:

Q: Describe the entire life of a very large star.

A: The life cycle of the very large star is illustrated in the diagram shown below:

Q: A star with a radius three times that of the Sun and a surface temperature twice that of the Sun,…

A: 144

Q: fill in missing word a) One difference between a type I and type II supernova is the formation of…

A: Few sentences are given and we need to fill in the blanks.

Q: A star on the main sequence has a surface temperature of 10,000 K. Use the H-R diagram to determine…

A: Wa can derive the ages and masses by locating each star on temperature and lumonisity plots (HR…

Q: What size star is the sun? O supergiant O medium O giant O white dwarf

A: The sun size is about 696340 km in radius and it's mass is 1.989*10^30 kg.

Q: f a star is to eventually form a stellar black hole at any point in its life cycle, what must…

A: a star spends most of its lifetime as a main-sequence star. when it consumes all of its hydrogen…

Q: What is the luminosity of a 5-solar mass main sequence star?

A:

Q: Describe what would happen to the luminosity of a star if its temperature doubles and its radius…

A: Luminosity of a star depends on both temperature and radius.  L ∝ R2 T4

Q: A star has a radius of 2.6 R⊙, and a temperature of 9,758 K. What is the luminosity of this star…

A: Given: The radius of the star is 2.6Ro. The temperature is 9758 K. The temperature of the Sun is…

Q: How long (in years) will a 0.06Msun main sequence star live? (The solar lifetime is 11 billion…

A:

Q: Find the wavelength of peak intensity for a hot 45000 K star that emits thermal radiation.

A: Given information:Temperature of the object (T) = 45000 K

Q: What is the difference between type I and type II supernovae

A: To determine  Difference between type I and type II supernovae

Q: The luminosity of Cepheid variable stars is related to the _______ of their pulsations.

A: Cepheid variables are named after the star Delta Cepheid of the fourth brightest star in…

Q: What is the size of a star with a temperature three times as hot as the sun and the luminosity of…

A:

Q: Generally speaking, a low-mass star ends up as a white dwarf while a high-mass explodes.  Why/How…

A:

Q: A solar type star evolves into a red giant with a luminosity 1000 L⊙ and radius of 1 AU. Determine…

A: Given: Luminosity of red giant is L=1000Lsun=103×3.846×1026 W Radius of red giant is r=1…

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: 50,000 20,000 Surface Temperature (C) Would the surface temperature of the stars classified as white…

A: Surface temperature of white dwarfs is around 20000K And for giant it is 2500 to 4000K

Q: For a white dwarf to become a nova it is necessary for it to A. become a black hole. B. have begun…

A: A white dwarf in a close binary system will explode as a supernova.

Q: The lowest mass for a true star is 1/12 the mass of the sun. What is the luminosity of this star (in…

A: Mass of the star, M star=1/12 times the mass of sun We are restricted to take the exponent of 4 for…

Q: The white dwarf that remains when our Sun dies will be mostly made of A. helium. B. carbon. C.…

A: Step1: Overview   The white dwarf that remains when the sun dies will be mostly made of carbon .

Q: How many times hotter than our sun is the hottest type O star, which has a surface temperature…

A:

Q: Size, surface temperature, and distance from the Earth are three things that determine the of the…

A: Ques:

Q: A red giant star has a temperature of 3900 K and a luminosity of 13600 LSun. How many times bigger…

A: Here given a Red giant with temperature 3900 k. The luminicity is 13600 × L(sun) We have to…

Q: What observations would you make of a star to determine whether its primary source of energy is…

A: Required : What observations would you make of a star to determine whether its primary source of…

Q: What is the mass of a star with a main-sequence lifetime of 6 billion years

A: Given: The main-sequence lifetime of a star is 6 billion years.

Q: A gravitational dead zone is found between two hyper giant stars, HG A and HG B, 34 million km from…

A: At point X the gravitational intensities of A and B must be equal and opposite,

Q: Which of the following statements about various stages of core nuclear burning (hydrogen, helium,…

A: Consider the different stages of core nuclear burning ( hydrogen, helium, carbon, etc ) in a…

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.