Aquila

Definition

Aquila is a constellation located in the northern celestial hemisphere. It is one of the 88 modern constellations and is best known for containing the bright star Altair, one of the three stars that make up the Summer Triangle asterism. In the context of the topics covered in Section 20.6 Interstellar Matter around the Sun, Aquila is significant as it lies in the direction of the Sun's motion through the Milky Way galaxy.

5 Must Know Facts For Your Next Test

1. The Aquila constellation is located in the northern celestial hemisphere and is one of the 88 modern constellations recognized by the International Astronomical Union.
2. Aquila contains the bright star Altair, which is one of the three stars that make up the Summer Triangle asterism, along with Vega and Deneb.
3. The Sun's motion through the Milky Way galaxy is in the direction of the Aquila constellation, which is significant for understanding the interstellar matter surrounding the Sun.
4. The interstellar medium in the vicinity of the Sun's motion through the Milky Way is important for studying the Sun's interaction with its local environment and the effects on the solar system.
5. Stellar kinematics, the study of the motions of stars within a galaxy, is relevant to understanding the Sun's movement through the Milky Way and the interstellar matter it encounters.

Review Questions

• Explain the significance of the Aquila constellation in the context of the Sun's motion through the Milky Way galaxy.
  • The Aquila constellation is significant in the context of the Sun's motion through the Milky Way galaxy because it lies in the direction of the Sun's movement. The interstellar medium, which includes gas, dust, and cosmic rays, in the vicinity of the Sun's path through the galaxy is an important factor in understanding the Sun's local environment and how it interacts with the surrounding material. Studying the interstellar matter around the Sun, as discussed in Section 20.6, can provide insights into the Sun's stellar kinematics, or the motions of stars within the galaxy.
• Describe the role of the Aquila constellation in the larger context of the Milky Way galaxy and its structure.
  • The Aquila constellation, with its bright star Altair, is an important reference point for understanding the structure and dynamics of the Milky Way galaxy. Altair is one of the three stars that make up the Summer Triangle asterism, which is a prominent feature in the night sky. The location of the Aquila constellation in relation to the Sun's motion through the galaxy provides a framework for studying the interstellar medium and how it interacts with the solar system. This knowledge can contribute to a broader understanding of the Milky Way's galactic rotation and the overall structure and evolution of our home galaxy.
• Analyze how the study of the interstellar matter around the Sun, as it relates to the Aquila constellation, can inform our understanding of the Sun's place within the Milky Way galaxy.
  • The study of the interstellar matter surrounding the Sun, as it moves through the Milky Way in the direction of the Aquila constellation, can provide valuable insights into the Sun's position and role within the larger galactic context. By examining the composition, density, and dynamics of the interstellar medium in this region, astronomers can better understand how the Sun interacts with its local environment and how these interactions may have influenced the formation and evolution of the solar system. Additionally, this information can be used to refine models of the Milky Way's structure and the motion of stars within the galaxy, ultimately enhancing our understanding of the Sun's place and movement within the broader galactic landscape.

Related terms

Interstellar Medium: The interstellar medium is the matter and radiation that exists in the space between the star systems in a galaxy, including gas, dust, and cosmic rays.

Galactic Rotation: The rotation of a galaxy around its center of mass, which causes the Sun and other stars to orbit the Milky Way's galactic center.

Stellar Kinematics: The study of the motions of stars, including their velocities, positions, and accelerations, within a galaxy.