The inner binary of the Polaris system, Polaris Aa and Ab, has a period of 29.6 yr. Polaris Aa has a mass of 5.4 Msun and Polaris Ab has a mass of 1.3 Msun. (a) What is the semi-major axis of Polaris Aa? (b) What is the semi-major axis of Polaris Ab? (Note: there should be no need to assume circular orbits here)

Q: a) Calculate the period of the solar system's orbit around the Milky Way. Assume that we are 8.5 kpc…

A:

Q: Assuming Proximus B orbits Alpha Centauri C at distance equal to the distance the earth orbits the…

A: The orbital period is defined as the time taken for a planet or satellite to revolve around it's…

Q: Now look at the two images labeled "At a distance of 2.5M" and "At a distance of 2.1M". These show…

A: The mass of the black hole is so massive that even light can’t escape from it. A black hole is a…

Q: An edge-on spectroscopic binary is monitored throughout its orbit. The spectroscopy indicates the…

A: In binary stars, both stars exert gravitational force on each other. Thus, they rotate around a…

Q: A cepheid star is located at a distance of 18.7kpc from the Earth and has an apparent visual…

A: Step 1:Step 2:

Q: What is the distance in light years from Earth to a star that makes a parallax angle of 2.0 arc…

A: Given  parallex(p)=2 arc second

Q: In the parallax method of determining stellar distances, the angle to a star is measured while che…

A: Let's assume b=1AU And distance between sun and alpha centaurie is d. θ=2.1x10-4…

Q: An astronomical image shows two objects that have the same apparent magnitude, i.e., the same…

A: Let the luminosity of the star is Ls= LoLuminosity of  Milky Way galaxy, Lm=1011LoLuminosity of…

Q: 5.15. We observe a binary system in which the tw stars are 1 and 2 arc sec, respectively, from the…

A: Answer the following question is

Q: The velocities of the two stars are 28km/s and 13km/s, and their periods are both 16 years. Find the…

A: Formula Let period of a star is T, velocity is v, orbital radius is r and , mass is M, Now the…

Q: The difference in absolute magnitude between two objects at the same distance is related to their…

A: "Since you have asked multiple question, as per our guidelines we will solve the first question for…

Q: A star is observed at a distance of 90 pc. What will be its parallax angle?

A: Parallax is defined as the change in the apparent position of an object due to a change in the…

Q: an object  is a located at the following equatorial coordinates (J2000): 12h 27m 53.6s (right…

A:

Q: Two cars of masses mį and m2 collide at an intersection. Before the collision, car 1 was traveling…

A: Apply momentum conservation in x-direction. m1v1=m1+m2vcosθvcosθ=m1v1m1+m2      ...... (1)

Q: A light of wavelength 620 nm is emitted from the following four places. What wavelength is observed…

A: As per general relativity, electromagnetic waves or photons that are traveling away from a…

Q: The apparent magnitude of a star is (4.3) and the parallax angle is (0.161) arcseconds. The absolute…

A: The absolute magnitude of a star is given by the formula, M=m-5 log10D10 where D is distance of the…

Q: WR 68a is a relatively newly discovered (2015) double-lined spectroscopic binary. It has an orbital…

A: Solution: Calculate the orbital radius of each planet from the given time period and velocity.…

Q: How close, r, to the center of a neutron star would a manned satellite be orbiting if it were at the…

A: Gravitational force of earth’s surface = Gravitational force of star GMN mr2=mg r= G MNg

Q: Complete the equation, by supplying the missing exponent. m*n^(2) *m^(3)=m^(11)n^(2)

A:

Q: is 0.218 arcseconds, then the distance of the body from the Earth in astronomical units is * O…

A:

Q: If the parallax angle of a body is 0.218 4 points arcseconds, then the distance of the body from the…

A: parallax method is useful to measure larger distance. For example distance between earth and sun,…

Q: The mass of a star is 1.99·1031 kg and its angular velocity is 1.60E-7 rad/s. Find its new angular…

A: Given data: The mass of the star is m=1.99x1031 kg. The initial angular velocity of the star is…

Q: The hook shown in the figure is only capable of resisting 500N vertical net force. Determine the…

A:

Q: The star Sirius has an apparent magnitude of -1.46 and appears 95-times brighter compared to the…

A: Part a: Magnitude in astronomy is defined as an index for the brightness of a star and is denoted by…

Q: What is the orbital period of Proxima Centauri and alpha Centauri about each other if the alpha…

A: Kepler's law is used to describe planetary motion.    Kepler's third law describes the…

Q: Show work. For the following: A parsec is a distance equal to 3.26 light years. The speed of light…

A:

Q: Two stars, named A and B, each with a mass equal to the Sun's mass are in orbit around each other.…

A:

Q: How far away is the star Spica, whose parallax is 0.0130?

A: When an observer's point of view changes the displacement observed for an object is called as…

Q: What is the Schwarzschild radius of a star with a mass of z × 109 MSun? The answer is in 106m. So if…

A:

Q: If a binary star system has a 0.1M⊙ star and a 10.0M⊙ star with a measured periastron and apastron…

A:

Q: τ Ceti is 11.9 ly away. How many arc seconds of parallax will it have?

A: Given: Distance of τ Ceti is d=11.9ly.

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: Galaxy B moves away from galaxy A at 0.501 times the speed of light. Galaxy C moves away from galaxy…

A:

Q: The decay mode of the positive tau is τ+→μ++ vμ + v-τ . The τ+ is the antiparticle of the τ- .Verify…

A: The decay mode of the τ+ is given by: τ+→μ++vμ+v¯τ