Image Details

Choose export citation format:

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 1.

Light curves of Betelgeuse for the last 15 years: the top panel shows the AAVSO optical (V-band) light curve; the bottom panel shows the JCMT/SCUBA-2 450 μm (green points) and 850 μm (red points) light curve constructed using both archival and newly obtained observations. Here we also show the APEX/LABOCA 870 μm light curve (purple squares) obtained from archival data. While not used in the fitting we also show the single ALMA 890 μm data point (brown triangle) from O’Gorman et al. (2017), to illustrate the consistency. The gray dashed line indicates the beginning of the dimming of the recent pulsation cycle. The inset panel shows a zoomed-in version of the JCMT/SCUBA-2 light curve with the corresponding UT date for each observation. All error bars indicate 1σ uncertainties including the uncertainty on the absolute calibration.

Other Images in This Article
Copyright and Terms & Conditions

Additional terms of reuse