Dim and dimmer Betelgeuse | Nature Astronomy

Dim and dimmer Betelgeuse | Nature Astronomy


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Access through your institution Buy or subscribe _Astron. Astrophys_. (in the press); preprint at https://arxiv.org/abs/2104.08105 After more than a year, Betelgeuse’s unprecedented dimming


by one magnitude is still under discussion, with observations showing various phenomena ranging from dust obscuration to a temperature drop in the photosphere. Kateryna Kravchenko and


co-workers have now discovered an outflow between October 2019 and February 2020 that increased the opacity of the upper atmosphere of Betelgeuse. They used the tomography method to probe


different depths of the stellar atmosphere as part of a wider study relating the atmospheric dynamics of a late-type star to the variability of its photosphere. This is a preview of


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ACCESS OPTIONS: * Log in * Learn about institutional subscriptions * Read our FAQs * Contact customer support AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Nature Astronomy


https://www.nature.com/natureastronomy May Chiao Authors * May Chiao View author publications You can also search for this author inPubMed Google Scholar CORRESPONDING AUTHOR Correspondence


to May Chiao. RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Chiao, M. Dim and dimmer Betelgeuse. _Nat Astron_ 5, 433 (2021).


https://doi.org/10.1038/s41550-021-01379-z Download citation * Published: 06 May 2021 * Issue Date: May 2021 * DOI: https://doi.org/10.1038/s41550-021-01379-z SHARE THIS ARTICLE Anyone you


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