Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 17, Problem 69Q
(a)
To determine
The sum of the masses of two stars, if one star of the binary star orbits another in every
(b)
To determine
The individual masses of the stars, if the ratio of their masses is
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A certain binary system consists of two stars that have equal masses and revolve in circular orbits around a fixed point half-way between them.
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Chapter 17 Solutions
Universe
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- Convert 1.39 x 10^9 kilograms to Jupiter Masses, MJ. The mass of Jupiter is known as MJ = 1.898×1027 kg. Mplanet = _________________________ MJ *The accepted mass of this planet HD 209458b is Mplanet = 0.69 MJ. Check your answer for correctness.arrow_forwardM6arrow_forwardConvert 9.021 x 1048 kg to Jupiter Masses (MJ). The mass of Jupiter is known as MJ = 1.898×1027 kg. Mplanet = _________________________ MJ ***The accepted mass of this planet HD 209458b is Mplanet = 0.69 MJ. Check your answer for correctness.arrow_forward
- In 2004, astronomers reported the discovery of a large Jupiter-sized planet orbiting very close to the star HD179949. The orbit was just 6.4x106 km (about 9 less than the orbit of Mercury) and the planet takes 3.1 days to make one circular orbit. The mass of the star is Answerx_______1030 kg. (Give the number before the exponent.)arrow_forwardTime From this light curve, we can deduce that... O the star has a high mass exoplanet orbiting it O the star has an exoplanet orbiting it that has an eccentric orbit O the star has an exoplanet orbiting it that has an eccentric orbit O the star has an exoplanet that is not on the same orbital plane as the star L Brightnessarrow_forwardPluto is considered a binary dwarf planet system with its companion Charon. Pluto has a mass of 1.303 x 1022 kg and mean radius of 1188.3 km. Charon has a mass of 1.586 x 1021 kg and mean radius of 606 km. The binary 5. system has a semi-major axis with the sun of 39.482 AU and there is an average distance of 19,591.4 km between the two dwarf planets. What is the system's center of mass with respect to Pluto, and why does this mean that Charon is a binary system and not a moon?arrow_forward
- Assume that there are 2 stars - Aqua and Ruby. They are in orbit around a massive star which is named as Star Ai that has a mass 5.98 x 1028 kg. The orbit of Ruby is circle and has a period of 1.430 yrs. The orbit of Aqua is an ellipse. At its periapsis, the distance of Star Aqua is twice as far from Star Ai than Star Ruby is. Solve how far is Star Aqua's apoapsis if Star Aqua is considered 3.250 times faster in periapsis than in apoapsis. Note: You can ignore the gravitational interaction that exists between Star Aqua and Star Ruby. Use the figure to understand the problem better. Aqua periapsis Choices: a. 1.9x10¹¹ m b. 3.8x10¹1 m c. 3.6x10¹0 m d. 1.2x10¹¹ m Ruby Ai apoapsisarrow_forwardIn the parallax method of determining stellar distances, the angle to a star is measured while the earth is on one side of the sun and then again six months later, as in the diagram below. Assume the earth-sun distance is 1 Astronomical Unit. The parallax angle of Alpha Centauri is 0= 2.1 x 10-4 ° . Find the distance from the sun to a Centauri in light years. Assume a circular orbit for the Earth. a Centauri Earth (June) Earth (December) Sunarrow_forwardA planet of mass m= 8.45 x 1024 kg is orbiting in a circular path a star of mass M= 6.95 x 1029 kg. The radius of the orbit is R= 3.15 x 107km. What is the orbital pperiod (in Earth days) of the planet Pplanet? Express your answer to three significant figures. Pplanet = ? daysarrow_forward
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