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Catalog Service:
Period-mass-loss rate relation of Miras
Short name: J/A+A/556/A38
IVOA Identifier: ivo://CDS.VizieR/J/A+A/556/A38
DOI (Digital Object Identifier): 10.26093/cds/vizier.35560038
Publisher: CDS[+][Pub. ID]
More Info: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/556/A38
VO Compliance: Level 2: This is a VO-compliant resource.		 Status: active
Registered: 2013 Jul 23 07:30:05Z
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Description


We report the discovery that Mira variables with and without absorption lines of the element technetium (Tc) occupy two different regions in a diagram of near- to mid-IR colour versus pulsation period. Tc is an indicator of a recent or ongoing mixing event called the third dredge-up (3DUP), and the near- to mid-IR colour, such as the (K-[22]) colour where [22] is the the 22um band of the WISE space observatory, is an indicator of the dust mass-loss rate of a star. We collected data from the literature about the Tc content, pulsation period, and near- and mid-IR magnitudes of more than 190 variable stars on the asymptotic giant branch (AGB) to which Miras belong. The sample is naturally biased towards optical AGB stars, which have low to intermediate (dust) mass-loss rates.

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