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Betelgeuse Fainter in the Submillimeter Too: An Analysis of JCMT and APEX Monitoring during the Recent Optical Minimum

  • Authors: Thavisha E. Dharmawardena, Steve Mairs, Peter Scicluna, Graham Bell, Iain McDonald, Karl Menten, Axel Weiss, and Albert Zijlstra

2020 The Astrophysical Journal Letters 897 L9.

  • Provider: AAS Journals

Caption: Figure 2.

Radiative-transfer models (lines) compared with observations of Betelgeuse. The blue triangles show fluxes, taken from Vizier (listed in Table A1 in the Appendix), and the green, red, and purple points indicate the data from this work in the same color scheme as Figure 1. The blue dashed line represents a qualitative fit from HYPERION to the 0.3–30 μm photometry, and the orange dotted line a model that is identical other than the addition of an extra shell of dust from 2 to 4R* that produces 1 mag of V-band extinction and the gray solid line shows the underlying photospheric model at the same spectral resolution as the radiative-transfer models. The inset panel highlights the sub-mm fluxes from this work and the model flux in the same region.

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