person weigh on the surface of this star?

Q: Dinary star system is observed orbiting with a period of 20.0 years, at an average distance of 5.0…

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: Given, Radius of neutron star R= 93.106 km

Q: 1.0 0.8 0.6 Cosmic background data from COBE 0.4 0.2 0.0l 0.5 10 Wavelength A in mm c) The left hand…

A: from the graph, the maximum intensity of radiation is at λ=1 mm. From Wein's law, we have…

Q: How long will it take a planet 150 million km from a star of mass 1.99 x 10^30 kg to complete 1 full…

A:

Q: For a main sequence star with luminosity L, how many kilograms of hydrogen is being converted into…

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Q: If a 1.40 Msun neutron star has a radius of 10 km, what is the density (in kg/cm³) of a 1.52 Msun…

A: Consider the neutron star is in a perfect sphere. The expression to solve for the density of the…

Q: Astronomy) (Part A) White Dwarf Size II. The white dwarf, Sirius B, contains 0.98 solar mass, and…

A: Mass of the dwarf planet = 0.98 solar mass                                          = 1.96 * 1033 gm…

Q: A Spinning Star has a period of rotation of T. Over a period of a million years, its radius…

A: Write the expression for the initial period of the given star, and solve for its initial angular…

Q: A 1.5 M neutron star and a 0.7 M white dwarf have been found orbiting each other with a period of 10…

A: The expression for the Kepler’s third law for binary stars is as follows: MA+MB=a3p2…

Q: Assuming that at the end of the He burning phase of the stellar core (r R_core). Calculate the…

A:

Q: What are the a) luminosity and b)wavelength of maximum emission for a star with a surface…

A: Given data Temperature of the star, T=2000 K radius of the star, R=108 m

Q: the parallax angle of a star to be 0.002 arc-seconds.  what would the  distance be to this star?

A: Given, Parallax angle, p=0.002 arc-seconds

Q: Suppose a star has a luminosity of 7.0x1026 watts and an apparent brightness of 4.0×10-12 watt/m?.…

A: Luminosity of star (L) = 7×1026 watt Apparent brightness (AB) = 4×10-12 Wm2

Q: The density of Sirius B is 2×106 g/cm3 and its mass is 1.95×1030 kg. What is the radius of the white…

A: The given data are: ρ=2×106 g/cm3=2×109 kg/m3m=1.95×1030 kg Here, ρ and m represent the density and…

Q: What is the orbital period (in s) of a bit of matter in an accretion disk that is located 6 ✕ 105 km…

A: Write the given values with the suitable variables. r=6×105 km=6×108 mM=99Mo=992×1030 kg=198×1030 kg…

Q: A neutron star has a radius of 11.5 km and a mass of about 1.35M Calculate the density of this…

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Q: Given the density of a pulsar, an extremely dense rotating star made of neutrons, is about 1011…

A: The density of a material defines how closely spaced the material has been packed. If the material…

Q: What is the peak wavelength (in nm) of a neutron star's luminosity if its temperature is  106 K?

A:

Q: Explain how some stars form in binary systems.

A: There are number of ways stars can be formed in binary systems. They are discussed below.

Q: The present-day density of the sun is about 1.4 g/cm3. The volume of a sphere is 4/3πr3. The density…

A: Given:ρsun=1.4g/cm3ρstar=ρsunxRsunRstar3volume of sphere =4/3πr3to find:ρsun when Rsun=50 times…

Q: What is the escape velocity (in km/s) from the surface of a 1.5 M neutron star? From a 3.0 M neutron…

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Q: Let's compare the acceleration due to gravity at the surface of a Sun-like star to a white dwarf of…

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Q: Given that a pair of stars are found to be orbiting each other with a period of 11.86 [yrs] and a…

A:

Q: Star A and Star B are a bound binary at a distance of 20 pc from the Earth. Their separation is 30…

A:

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

A: To Find :  density of neutron star

Q: A neutron star is the remnant left after certain supernovae (explosions of giant stars). Assume a…

A: Given: The diameter of the neutron star is 16 km. The mass of the neutron star is 1.99×1030 kg.…

Q: You measure a star to have a parallax angle of 0.12 arc-seconds What is the distance to this star in…

A: Write the given values of the problem- Parallax angle=0.12 arc-second

Q: A star has a parallax angle of 0.0270 arcseconds and an apparent magnitude of 4.641. What is the…

A: According to the guidelines, only one question will be answered. Please submit the other question…

Q: If a star has a surface temperature of 3000 K but a luminosity 150 times greater than our Sun, what…

A: luminosity =  150 times greater than Sun, temperature = 3000 K what size is this star?

Q: Which of the following is a true statement? A smaller diameter star can never have a smaller number…

A: The statement that is true among the options provided is:"A smaller diameter star can never have 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: r=Radius of star=86.234 kmm=Mass of star=Mass of Sun=1.989×1030 kgV=Volume of star=43πr3

Q: What is the average density of a neutron star that has the same mass of the sun (1.9891 × 1030 kg)…

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: Given that: Radius of neutron star r=82.794 km Mass of neutron star is equal to mass of Sun.

Q: Using the center-of-mass equations or the Center of Mass Calculator (under Binary-Star Basics,…

A: Given: In this question, the given details are Consider the star 1 has m1=3.4 solar masses, and the…

Q: A star has a period of P = 37 days. It has a radius of 5.7 times the radius of the sun. Calculate…

A: The period of the star: P = 37 days (37 x 24 x 60 x 60 seconds = 3.2 x 106 seconds); The radius of…

Q: You've just discovered a new X-ray binary, which we will call Hyp-X1 ("Hyp" for hypothetical). The…

A: Given: Separation of the stars d = 21 million km On converting into meter, d = 21×106×103 m d =…

Q: Let us imagine that the spectrum of a star is collected and we find the absorption line of…

A: Since            ∆λ/λ   = v/c where  c = 3*10-8m/s v    = velocity of star…

Q: (a) The figure shows the three stars and their velocities. Which star has the largest proper motion?…

A:

Q: If a neutron star has a radius of 12 km and rotates 1,352 times a second, what is the speed at which…

A: radius of neutron star (r) = 12 km = 12000 m angular speed (ω) = 1352 revolutions per second

Q: Part A: Use the orbital period 27 min for the binary pulsar (two neutron stars orbit each other) to…

A: Part (A) Given: The orbital period of binary pulsar is T=27 min. The mass of neutron star is M=3Ms.…

Q: Suppose a star has a luminosity of 7.0x1026 watts and an apparent brightness of 4.0x10-12 watt/m?.…

A: Given: The luminosity is 7x1026 W. The apparent brightness is 4x10-12 W/m2.

Q: Using solar units, we find that a star has 4 times the luminosity of the Sun, a mass 1.25 times the…

A: Let Lo is the luminosity of the sun and Mo is the mass of the sun So from the question, the…

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

A:

Q: A. Estimate the surface gravity of a neutron star with R = 10 km and M = 2Mo. B. Determine the…

A: The surface gravity, also termed as the acceleration due to gravity, on the surface of any planet is…

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.