The distribution of the mass of the Milky Way Galaxy is determined by. Most of the mass in the center of our galaxy is invisible. B) determining the amount of gas and dust. E) weighing various parts of the Milky Way. A. counting the number of stars. RR Lyrae. The dynamical method is based on the Virial theorem, and calculates the mass from kinematical data such as rotation velocities, velocity dispersions, and motions of satellite galaxies. E. weighing various parts of the Milky Way. Astronomy Test One. Figure 1. The size of the Milky Way is determined from studying _____ stars in globular clusters. Created by. D) studying the rotation of the galaxy. The Milky Way Galaxy The Milky Way Galaxy, sometimes simply called the Galaxy, is a spiral system consisting of several billion stars, one of which is the Sun. The mass distribution in the Galaxy is determined by dynamical and photometric methods. Spell. studying the rotation of the galaxy. Match. STUDY. C. studying how stars are distributed in the Milky Way. The blue curve shows what the rotation curve would look like if all the matter in the Galaxy were located inside a radius of 30,000 light-years. Rotation Curve of the Galaxy: The orbital speed of carbon monoxide (CO) and hydrogen (H) gas at different distances from the center of the Milky Way Galaxy is shown in red. Learn. jackiegarcia4. Most of the mass in the Milky Way Galaxy is located. It takes its name from the Milky Way, the irregular luminous band of stars and gas clouds that stretches across the sky. Test. in the halo (above/below) the disk. 27) The distribution of the mass of the Milky Way Galaxy is determined by A) counting the number of stars. PLAY.

C) studying how stars are distributed in the Milky Way. Rotation curves are the major tool for determining the dynamical mass distribution in the Milky Way and spiral galaxies.

The mass distribution in the Galaxy is determined by dynamical and photometric methods. B. studying the rotation of the galaxy. Flashcards. Write. D. determining the amount of gas and dust. Gravity. ... Study the distribution and ages of stars in the figure, and use your observations to determine which of the following statements are correct. In March 2019, astronomers reported that the mass of the Milky Way galaxy is 1.5 trillion solar masses within a radius of about 129,000 light-years, over twice as much as was determined in earlier studies, and suggesting that about 90% of the mass of the galaxy is dark matter.