Poster Open Access

The Curious Case of Betelgeuse

Granzer, Thomas; Weber, Michael; Strassmeier, Klaus G.; Dupree, Andrea


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  <identifier identifierType="DOI">10.5281/zenodo.4561732</identifier>
  <creators>
    <creator>
      <creatorName>Granzer, Thomas</creatorName>
      <givenName>Thomas</givenName>
      <familyName>Granzer</familyName>
      <affiliation>Leibniz Institut fuer Astrophysik Potsdam</affiliation>
    </creator>
    <creator>
      <creatorName>Weber, Michael</creatorName>
      <givenName>Michael</givenName>
      <familyName>Weber</familyName>
      <affiliation>Leibniz Institut fuer Astrophysik Potsdam</affiliation>
    </creator>
    <creator>
      <creatorName>Strassmeier, Klaus G.</creatorName>
      <givenName>Klaus G.</givenName>
      <familyName>Strassmeier</familyName>
      <affiliation>Leibniz Institut fuer Astrophysik Potsdam</affiliation>
    </creator>
    <creator>
      <creatorName>Dupree, Andrea</creatorName>
      <givenName>Andrea</givenName>
      <familyName>Dupree</familyName>
      <affiliation>Harvard–Smithsonian Center for Astrophysics</affiliation>
    </creator>
  </creators>
  <titles>
    <title>The Curious Case of Betelgeuse</title>
  </titles>
  <publisher>Zenodo</publisher>
  <publicationYear>2021</publicationYear>
  <subjects>
    <subject>Post main sequence cool stars</subject>
  </subjects>
  <dates>
    <date dateType="Issued">2021-02-25</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Poster</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://zenodo.org/record/4561732</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.5281/zenodo.4561731</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://zenodo.org/communities/coolstars20half</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;Since more than a decade, the AIP is monitoring &lt;span class="math-tex"&gt;\(\alpha\)&lt;/span&gt; Ori with its robotic spectroscopic facility STELLA/SES in Teide observatory, Tenerife along with its automated photoelectric telescope T7 in Fairborn observatory, Az. Additionally, we got access with exclusive two-band photometric data on Betelgeuse from the BRITE satellite consortium, covering the last seven seasons. In late 2019, Betelgeuse showed a rapid brightness decline, reaching an all-time low in Feb. 2020, followed by a quick re-brightening. This poster&amp;nbsp; shows radial velocity data together with the photometry. The radial velocity follows the photometry in general, but sometimes shows a time-shift, which was particularly visible in the grand dimming event. Interesting is the time-frequency analysis of the different data set: All three show similar features at split-periods around the known P=420d.&lt;/p&gt;</description>
  </descriptions>
</resource>
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