Vogel

Definition

Vogel is an astronomer known for his work in stellar spectroscopy, particularly in measuring the diameters of stars. His contributions have helped enhance the understanding of star characteristics and classifications.

5 Must Know Facts For Your Next Test

1. Vogel used spectroscopy to determine the surface temperatures and chemical compositions of stars.
2. He was one of the first to measure radial velocities of stars, helping to understand their movements.
3. Vogel's methods allowed for more accurate calculations of stellar diameters.
4. His work laid the foundation for future developments in classifying stars by their spectral types.
5. Vogel's research contributed significantly to our knowledge of binary star systems.

Review Questions

• What technique did Vogel use to measure the diameters and movements of stars?
• How did Vogel’s work contribute to the classification of stars?
• Why is Vogel significant in the study of binary star systems?

Related terms

Spectroscopy: A technique used to analyze light spectra from astronomical objects to determine their composition and properties.

Radial Velocity: The speed at which a star or other object moves toward or away from Earth, measurable through Doppler shifts in its spectrum.

Binary Star System: A system where two stars orbit around a common center of mass, often studied through changes in their spectral lines.