Betelgeuse Just Isn't That Cool: Effective Temperature Alone Cannot Explain the Recent Dimming of Betelgeuse.

@article{Levesque2020BetelgeuseJI,
  title={Betelgeuse Just Isn't That Cool: Effective Temperature Alone Cannot Explain the Recent Dimming of Betelgeuse.},
  author={E. Levesque and P. Massey},
  journal={arXiv: Solar and Stellar Astrophysics},
  year={2020}
}
We present optical spectrophotometry of the red supergiant Betelgeuse from 2020 February 15, during its recent unprecedented dimming episode. By comparing this spectrum to stellar atmosphere models for cool supergiants, as well as spectrophotometry of other Milky Way red supergiants, we conclude that Betelgeuse has a current effective temperature of 3600 +/- 25 K. While this is slightly cooler than previous measurements taken prior to Betelgeuse's recent lightcurve evolution, this drop in… Expand
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References

SHOWING 1-10 OF 46 REFERENCES
Evolutionary tracks for Betelgeuse
Spectral type, temperature and evolutionary stage in cool supergiants
Late-Type Red Supergiants: Too Cool for the Magellanic Clouds?
HV 11423: The Coolest Supergiant in the SMC
...
1
2
3
4
5
...