Calculate the expected life span of a 16 solar mass star

Q: Why does a type Ia supernova explode? in two sentences.

A:

Q: if the stars at the turnoff point in a star cluster have masses of about 9 M⊙, how old is the…

A: Mass of the star at the turn off point is  9 times of mass of the sun.

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: A nova is an event, not a stellar object. (True or false)

A: It is True. A nova  is a transient astronomical event that causes the sudden appearance of a bright,…

Q: What is the average density of a neutron star that has the same mass as the sun but a radius of only…

A: Given,  mass of sun = mass of neutron star (m) = 1.989×1030 kg  radius = 86.31 km

Q: What is the average density of the neutron star that has the same mass as the sun but a radius of…

A: Mass of sun is Ms = 1.989×10³⁰ kg So, According to question,mass of the neutron star is given by Mn…

Q: Trappist 1 a small red dwarf (M*=0.089) with R*=0.12, L*=0.000553 and T=2566. What in AU's is the…

A: The Stefan-Boltzmann law states that the luminosity of the star:L=4πR2σT4………(1)where,R is the radius…

Q: How does the extreme temperature sensitivity of the CNO cycle affect the structure of stars?

A: As a result of the extreme temperature dependence of CNO burning, those stars that are dominated by…

Q: Explain how supernovae produce neutron stars and pulsars.

A: Neutron stars are city size stellar objects with a mass of about 1.4 times that of the Sun.When…

Q: Given the mass of the sun (1.989 x 10^30 kg), calculate the average density of a neutron star with a…

A: Given that:

Q: If the accretion disk around a neutron star has a radius of 8 ✕ 105 km, what is the orbital velocity…

A: Given Data: The radius of the neutron star is r = 8 x 105 km. As we know that the mass of the…

Q: Calculate the lifetime of a 15 MSun star. Answer: ___ years

A:

Q: What is the average density of a neutron star that has the same mass as the sun but a radius of only…

A: Density =MassVolume Mass of Sun = 1.989 × 1030 kg Radius 'r' of the Neutron Star = 74.591 km = 74591…

Q: Why do you expect neutron stars to have a more powerful magnetic field than a white dwarf?

A: A neutron star consists of ions along with neutrons which are responsible for radiation in the form…

Q: Assume that you observe both of these stars in a galaxy 10 million light-years away. How bright is…

A: 1) Distance of both stats from observer, d = 10 million light years d = 10 x 106 ly d = 107 ly 1…

Q: What is the average density of the neutron star that has the same mass as the sun but a radius of…

A: Density is defined as mass per unit volume. Consider the neutron star is spherical in shape having…

Q: A neutron star has a radius of 10 km and a mass of 1.4 Solar masses, what is its density and how…

A:

Q: If a globular cluster contains 2 million stars and is 30 pc in diameter, what is the average…

A: A Globular cluster is a cluster of old stars, only a few years younger than the Universe itself…

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

A:

Q: The star 51 Pegasi has about the same mass and luminosity as our Sun and is orbited by a planet with…

A: In this question we have to calculate the luminosity. Please give positive feedback if the answer…

Q: If the radius of the neutron star is 85.074 km, what is the average density of a neutron star that…

A: The density of a neutron star is given by, ρ=MV where M is the mass of the star and V is the volume…

Q: If a contracting protostar is 0.5 times as luminous as the Sun and has a temperature of only 1,500…

A:

Q: What is the average density of the neutron star that has the same mass as the sun but a radius of…

A:

Q: What is the average density of the neutron star that has the same mass as the sun but a radius of…

A: Given : radius (r) = 18.273 km = 18273 m

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: supernova remnant is now 4.75 pc in radius and is expanding at 1,600 km/s. Approximately how many…

A: Given 1 pc = 3.1 × 1013 km 1 year = 3.2 × 107 s Radius of supernova remnant = 4.75 × 3.1 × 10 13 km…

Q: Assume a neutron star has a mass of about 1.2 times the mass of the Sun and a radius of 7…

A: Given , massm of neutron star=1.2 x mass of Sun .                         =1.2 x 1.989x1030 kg…

Q: Suppose a planetary nebula is 3.5 pc in diameter, and Doppler shifts in its spectrum show that the…

A:

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: 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: What is the average density of a neutron star that has the same mass as the sun but a radius of only…

A: r=Radius of star=86.234 kmm=Mass of star=Mass of Sun=1.989×1030 kgV=Volume of star=43πr3

Q: If a circular accretion disk around a 1.4 M. neutron star has a radius of 8.00 x 10° km as measured…

A: Given data: Mass of the Neutron star is, M= 1.4 Ms Where,  Ms - Mass of the sun Therefore, Mass of…

Q: Suppose a planetary nebula is 4.3 pc in diameter, and Doppler shifts in its spectrum show that the…

A: The expression for find age of planetary nebula is t=Rv=d2v

Q: What is the average density of a neutron star that has the same mass as the sun but a radius of…

A: Given: Neutron star has same mass as sun = 1.989 × 1030 kg Radius r = 97.254 km To determine:…

Q: What is the answer below if the radius of the neutron star is 29.894 km? (express your answer in the…

A: The mass of the Sun is 1.989×1030 kg. Hence, the mass of the star is M=1.989×1030 kg.

Q: If a star converted every bit of its mass into energy the conversion efficiency would be 100%.…

A: The total energy accounted for the total mass of the sun can be calculated as below,

Q: what is the average density of a neutron star that has the same mass as the sun but a radius of only…

A: Given,  Radius of neutron star : 82.794 km mass of sun = mass of neutron star = 1.989 ×1030 kg

Q: What is the average density of the neutron star that has the same mass as the sun but a radius of…

A: Given that the mass of neutron star is equal to the mass of sun and radius of the neutron star is…

Q: A typical white dwarf has a mass of about 1.0MSunMSun and the radius of Earth (about 6400…

A: Given information: The mass of the dwarf star (m) = 1.0 × Mass of the sun Mass of the sun = 1.98…

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.