Gamma Columbae
Possible wide binary with a rare post-fusion subgiant primary.
Gamma Columbae is a possible wide binary star system in the southern constellation of Columba, visible to the naked eye with an apparent visual magnitude of 4.36. The primary is an evolved B-type subgiant that has just finished hydrogen fusion, a rare and brief structural readjustment phase lasting on the order of ten thousand years.
Quick Facts
- Apparent visual magnitude
- 4.36
- Distance from sun
- roughly 1050 ly
- Radial velocity
- +24 km/s
- Primary spectral type
- B2.5 IV
- Primary mass
- nearly six times the solar mass
- Primary radius
- close to five times the Sun's girth
- Primary luminosity
- over 2,000 times the solar luminosity
- Primary effective temperature
- 12,904 K
Facts from the source article.
More in Bright Stars by Bayer Designation: Binary and Multiple Stars
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