<div class="csl-bib-body">
<div class="csl-entry">Uttenthaler, S. (2024, July 11). <i>Infrared Period-Luminosity Relations of Galactic Miras Based on Multi-Epoch Photometry and the Gaia Parallax Precision</i> [Conference Presentation]. Advances in Cool Evolved Stars Conference (ACES 2024), Melbourne, Australia.</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/199819
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dc.description.abstract
Till date, period-luminosity relations of Galactic Miras are scarce in the literature because their distances were poorly known. This has changed with the advent of Gaia parallaxes. A further limitation is the lack of multi-epoch IR photometry for significant samples of Miras; single-epoch 2MASS photometry results in large scatter because of the stars’ large amplitude variability. We combined several sources of data to improve on this: 3.6 years of observations with the COBE/DIRBE instrument in four IR photometric bands, multi-epoch observations with the WISE space observatory in two bands, and hand-picked pulsation periods based on visual AAVSO light curves of the stars. We present period-luminosity relations of Galactic Miras in these photometric bands and use the scatter around them to assess the precision of Gaia parallaxes of AGB stars. We find that they must be more precise than often reported in the literature.
en
dc.language.iso
en
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dc.subject
Astrophysics
en
dc.subject
Stellar Astrophysics
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dc.subject
Stellar Evolution
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dc.title
Infrared Period-Luminosity Relations of Galactic Miras Based on Multi-Epoch Photometry and the Gaia Parallax Precision
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dc.type
Presentation
en
dc.type
Vortrag
de
dc.type.category
Conference Presentation
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tuw.researchTopic.id
X1
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tuw.researchTopic.name
Beyond TUW-research foci
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tuw.researchTopic.value
100
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tuw.publication.orgunit
E134-05 - Forschungsbereich Surface Physics
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tuw.author.orcid
0000-0002-0055-3815
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tuw.event.name
Advances in Cool Evolved Stars Conference (ACES 2024)
