PPT Slide

Galactic Structure

Kinematics of Galactic Rotation

• Toward 0o < l < 90o (the 1st quadrant)

and 180o < l < 270o (the 3rd quadrant)

we will observe positive radial velocities

due to Galactic rotation….

• Toward 90o < l < 180o (the 2nd quadrant)

and 270o < l < 360o (the 4th quadrant)

we will observe negative radial velocities

due to Galactic rotation….

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