(a) If the actual separation between HD 80606 and HD 80607 is 2000 AU, determine the orbital period of the binary star system.

Q: Use a diagram to explain what is meant by the parallax angle, p, for a star observed twice from…

A: Diagram for explaining parallax angle:        o   star                                      / \…

Q: Suppose the Sun was part of a binary star system with a period of 15 years and an average separation…

A: Given data Time period ,T=15 years=15×3.154×107 sec Radius, r=10 AU=1.496×1012 m

Q: 6. |A visual binary has a parallax 00 = 0.4 arcsec, a maximum separation a00 = 6.0 arcsec, and an…

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Q: Suppose you observe a star orbiting the Galatic center at a speed of 1000 km/s in a circular orbit…

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Q: A star has initially a radius of 660000000 m and a period of rotation about its axis of 34 days.…

A: The angular velocity of the object is, ω=2πT  (a) The inertia of the sphere is, I=25MR2 The initial…

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: 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: what would its period (in s) be if no mass were ejected and a sphere of uniform density can model HD…

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Q: A visual binary is composed of two stars A and B. This visual binary has a rotation period of 59.94…

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Q: A star has initially a radius of 680000000 m and a period of rotation about its axis of 26 days.…

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Q: Which star in the table of stellar data has the largest parallax? Star distance (pc) |parallax angle…

A: In this problem, it is asking about the star which has maximum parallax.

Q: The total intensity of light measured on earth, from an ecliptic binary, is plotted in the figure as…

A:

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: 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: Consider a binary system in which both stars have circular orbits. For star 1, the radius of this…

A: Given:  Distance between the stars =d= 0.5 AU + 0.125 AU Aperture = D = 2.4 m Distance of starts…

Q: Determining the orbit of the two stars of Kepler-34, also called A and B. These two stars together…

A: For a binary system, the period T is T=4π2a3Gm1+m2 Where a is the semi-major axis,  m represents the…

Q: If the distance to Star C is 16 pc, what is the value of its distance modulus (m-M)?

A: There are two types of measuring distancing as the 1) Apparent magnitude which indicates how bring…

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: Consider two stars on the main sequence, A and B. Star A has a mass of 9. Мо Star B has a mass of…

A: Solution attached in the photo

Q: Q1 (ints): A0620–00 is an X-ray binary system, there is a normal star and a compact object. For the…

A: A binary system in astronomy consists of two astronomical objects two stars or a star and an…

Q: (a) the ratio of initial to final angular momentum (Li/Lf) a. 1.85E+16 b. 51.2 c. 0.0195 d. 5.4E-17…

A: a) The star’s angular momentum can be represented as, Here, I, M, R, T, and ω represent the…

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: 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: Two stars are found to orbit each other once every 6.00 months. If the orbital radius (distance)…

A: According to Kepler’s third law, for a binary star system, we have the following relation between…

Q: The star Firefly is located 3.0 pc away. If it had an absolute magnitude of 13.0, which value below…

A: Write the given data. d=3AbsM=13

Q: The Tully-Fischer method relies on being able to relate the mass of a galaxy to its rotation…

A: Given: Distance of galactic center of Milky way r = 50 kpc r=50kpc3.086×1019m1kpc=154.3×1019m.…

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: Suppose the binary system is 1018 m away from us and the maximum distance between them is 100 m.…

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Q: An object was discovered on Feb. 24.37 UT (position R.A. = 5h35m.8, Decl. = -69 18'), obtained m =…

A: Absolute magnitude and apparent magnitude of any stellar object are related as M=m-2.5logd102M is…

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

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Q: Calculate by how many times Betelgeuse is brighter than the Sun, if its parallax is 0.006 arcsec,…

A: The objective of the question is to calculate how much brighter Betelgeuse is compared to the Sun.…

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

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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 orbiting Sagittarius A* is orbiting 970 AU from a 4 million MSun object. How fast (in km/s)…

A: The centripetal force is the force that keeps the planet or the star revolving around a central…

Q: At the very center (nucleus) of our galaxy lies an object called Sagittarius A*. A star called S2…

A: Requried :: What object is Saggitarius A*.

Q: A Type Ia supernova is observed and achieves an apparent magnitude of m = 19.89 at peak brightness.…

A: Given Values :The absolute magnitudes of Type Ia supernovae at peak brightness,    M = -19 Apparent…

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

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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