Betelgeuse fainter in the sub-millimetre too: an analysis of JCMT and APEX monitoring during the recent optical minimum

@article{Dharmawardena2020BetelgeuseFI,
  title={Betelgeuse fainter in the sub-millimetre too: an analysis of JCMT and APEX monitoring during the recent optical minimum},
  author={T. Dharmawardena and S. Mairs and P. Scicluna and G. Bell and I. McDonald and K. Menten and A. Weiss and A. Zijlstra},
  journal={arXiv: Solar and Stellar Astrophysics},
  year={2020}
}
Betelgeuse is the nearest Red Supergiant star and it underwent an unusually deep minimum at optical wavelengths during its most recent pulsation cycle. We present submillimetre observations taken by the James Clerk Maxwell Telescope and Atacama Pathfinder Experiment over a time span of 13 years including the optical dimming. We find that Betelgeuse has also dimmed by \sim20\% at these longer wavelengths during this optical minimum. Using radiative-transfer models, we show that this is likely… Expand
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References

SHOWING 1-10 OF 41 REFERENCES
Scuba-2: On-sky calibration using submillimetre standard sources
The nearby evolved stars survey - I. JCMT/SCUBA-2 submillimetre detection of the detached shell of U Antliae
Texes Observations of M Supergiants: Dynamics and Thermodynamics of Wind Acceleration
The Sub-mm Variability of IRC+10216 and $o$ Ceti
SCUBA-2: the 10 000 pixel bolometer camera on the James Clerk Maxwell Telescope
...
1
2
3
4
5
...