In a particular binary star system, only one star is visible because the other star is too faint to see at that distance. An astronomer measures the size (semimajor axis) and period of the orbit of the visible star. From this information the astronomer can calculate
nothing about the mass—both stars have to be visible to do so. |
|
the mass of each star. |
|
the sum of the masses of the two stars but not the mass of each star separately. |
|
the mass of the visible star but not that of the unseen star. |
Answer is third option From this information the astronomer can calculate
Answer |
the sum of the masses of the two stars but not the mass of each star separately. |
In a particular binary star system, only one star is visible because the other star is...
The spectral lines of two stars in a particular eclipsing binary system shift back and forth with a period of 6 months. The lines of both stars shift by equal amounts, and the amount of the Doppler shift indicates that each star has an orbital speed of 1.2×105 m/s relative to the other. What are the masses of the two stars? Assume that each of the two stars traces a circular orbit around their center of mass. (Hint: See Mathematical...
Sirius, the brightest star in the sky, is actually a binary system. Sirius A is a main sequence star of two solar masses in orbit with Sirius B, a white dwarf star. Assuming the two stars orbit each other with an average radius of 19.85 AU, what is the period of their orbit? What is their average tangential velocity? Warm Up Sirius, the brightest star in the sky, is actually a binary system. Sirius A is a main sequence star...
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...
The spectral lines of two stars in a particular eclipsing binary system shift back and forth with a period of 10 months. The lines of both stars shift by equal amounts, and the amount of the Doppler shift indicates that each star has an orbital speed of 105 m/s. What are the masses of the two stars? Assume that each of the two stars traces a circular orbit around their center of 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?
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...
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...
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...
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...