One characteristic of the star Spica that causes it to have a greater luminosity than Barnard’s Star as it has shorter period of revolution.
- Spica is made of two stars that are so close to each other and often comes under the binary star system.
- The star Spica has a luminosity 12,100 times the Sun.
- Spica is the most luminous star in the constellation Virgo.
- The star Spica has a lower gravitational attraction to the star and a shorter period of rotation.
Therefore we can conclude that the star Spica has a higher luminosity than Barnard’s Star.
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