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Sirius, the brightest star in the sky, is actually a binary system. Sirius A is a main sequence star of two solar ma...
Sirius, the brightest star in the sky, is a main-sequence star, as is the Sun, but...
Sirius, the brightest star in the sky, is a main-sequence star, as is the Sun, but Sirius has a luminosity about 27 times that of the Sun and a mass about 3 times that of the Sun. Use this information to determine which star will live longer, and by what factor, approximately.
4) A binary star system consists of two stars, one of which is 1 solar mass...
4) A binary star system consists of two stars, one of which is 1 solar mass and one of which is 2 solar masses. They are separated by a distance of 5 astronomical units and have approximately circular orbits. a) What is the orbital period of each star? b) What is the orbital velocity of each star? c) What is the angular momentum of the two star system, assuming that each star's radius is much smaller than its orbital radius?
The bright red star Antares is actually a binary star system, its components are named a...
The bright red star Antares is actually a binary star system, its components are named a Scorpii A and a Scorpii B respectively. Assuming that the separation between the two stars are 529 AU, and they rotate around each other with a period ranging between 880 to 2562 years, calculate the range of the total mass for the Antares system in M. using the modified version of Kepler's Third Law. State what further observation is required to find the individual...
For the following, quote your numerical answers to two significant figures: a) A binary system consists...
For the following, quote your numerical answers to two significant figures: a) A binary system consists of two stars orbiting a common center of mass. Star A is a white star of mass MA = 2.02Mo, where Mo = 1.989 x 1030 kg is the mass of the Sun. Its companion, Star B, is a white dwarf with mass Mg = 0.978M. The orbital period of the two objects is observed to be t = 50.09 years. What is the...
30. Why are the Balmer lines in the spectra of giant stars narrower than those for...
30. Why are the Balmer lines in the spectra of giant stars narrower than those for main-sequence stars? 31. Binary stars are [common, very rare]. 32. Binary stars allow us to determine what very important property of stars? 33. In a binary system the center of mass lies closer to the [more massive, less massive] star. 34. What type of star is Sirius B? [main sequence, white dwarf, giant] 35. Why does a spectroscopic binary system only allow us to...
5- Consider a binary system composed of a star 1 and a star 2 that both...
5- Consider a binary system composed of a star 1 and a star 2 that both have very eccentric orbits (el = e2 = 0.500). They both take 3.00 months to complete an orbit but the semi-major axis of star 2 is three times larger than that of star 1. The two stars are very close to each other since the sum of their semi-major axes is 0.500 AU. They both lie 50.0 ly from us. a) Make a somewhat...
Plaskett's binary system consists of two stars that revolve in a circular orbit about a center...
Plaskett's binary system consists of two stars that revolve in a circular orbit about a center of mass midway between them. This statement implies that the masses of the two stars are equal (see figure below). Assume the orbital speed of each star is |v vector| = 170 km/s and the orbital period of each is 14.5 days. Find the mass M of each star. (For comparison, the mass of our Sun is 1.99 times 10^30 kg.) 1.02e-9 If you...
Need help with this problem. Thanks. Binary Stars Q1) A binary star system has a distance...
Need help with this problem. Thanks.
Binary Stars Q1) A binary star system has a distance from Earth of 42.2 light years. The distance between the stars is 1.08 x 101 m and the rotation period is 104 days. Assume equal masses of the stars, and circular orbits (centre of mass of the system is at rest relative to the Earth). a) Calculate the speed of the stars relative to the centre of mass of the system. Further assume the...
op Plaskett's binary system consists of two stars that revolve In a circular orbit about a center of mass midway betwee...
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Plaskett's binary system consists of two stars that revolve In a circular orbit about a center of mass midway between them. This statement implies that the masses of the two stars are equal (see figure below). Assume the orbital speed of each star is |v | = 240 km/s and the orbital period of each is 12.5 days. Find the mass M of each star. (For comparison, the mass of our Sun is 1.99 times 1030 kg Your answer...
5) A star (no matter what its mass) spends most of its life Select one: a....
5) A star (no matter what its mass) spends most of its life Select one: a. as a protostar. b. as a main-sequence star. c. as a planetary nebula. d. as a red giant or supergiant. 6) What is the ultimate fate of an isolated white dwarf? Select one: a. It will cool down and become a cold black dwarf. b. As gravity overwhelms the electron degeneracy pressure, it will explode as a nova. c. As gravity overwhelms the electron...
4) A binary star system consists of two stars, one of which is 1 solar mass and one of which is 2 solar masses. They are separated by a distance of 5 astronomical units and have approximately circular orbits. a) What is the orbital period of each star? b) What is the orbital velocity of each star? c) What is the angular momentum of the two star system, assuming that each star's radius is much smaller than its orbital radius?
The bright red star Antares is actually a binary star system, its components are named a Scorpii A and a Scorpii B respectively. Assuming that the separation between the two stars are 529 AU, and they rotate around each other with a period ranging between 880 to 2562 years, calculate the range of the total mass for the Antares system in M. using the modified version of Kepler's Third Law. State what further observation is required to find the individual...
For the following, quote your numerical answers to two significant figures: a) A binary system consists of two stars orbiting a common center of mass. Star A is a white star of mass MA = 2.02Mo, where Mo = 1.989 x 1030 kg is the mass of the Sun. Its companion, Star B, is a white dwarf with mass Mg = 0.978M. The orbital period of the two objects is observed to be t = 50.09 years. What is the...
5- Consider a binary system composed of a star 1 and a star 2 that both have very eccentric orbits (el = e2 = 0.500). They both take 3.00 months to complete an orbit but the semi-major axis of star 2 is three times larger than that of star 1. The two stars are very close to each other since the sum of their semi-major axes is 0.500 AU. They both lie 50.0 ly from us. a) Make a somewhat...
Plaskett's binary system consists of two stars that revolve in a circular orbit about a center of mass midway between them. This statement implies that the masses of the two stars are equal (see figure below). Assume the orbital speed of each star is |v vector| = 170 km/s and the orbital period of each is 14.5 days. Find the mass M of each star. (For comparison, the mass of our Sun is 1.99 times 10^30 kg.) 1.02e-9 If you...
Need help with this problem. Thanks.
Binary Stars Q1) A binary star system has a distance from Earth of 42.2 light years. The distance between the stars is 1.08 x 101 m and the rotation period is 104 days. Assume equal masses of the stars, and circular orbits (centre of mass of the system is at rest relative to the Earth). a) Calculate the speed of the stars relative to the centre of mass of the system. Further assume the...
op
Plaskett's binary system consists of two stars that revolve In a circular orbit about a center of mass midway between them. This statement implies that the masses of the two stars are equal (see figure below). Assume the orbital speed of each star is |v | = 240 km/s and the orbital period of each is 12.5 days. Find the mass M of each star. (For comparison, the mass of our Sun is 1.99 times 1030 kg Your answer...
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