Titel
Cross-matching the General Catalogue of Variable Stars with the Gaia DR3 source catalogue
Autor*in
L Eyer
Department of Astronomy, University of Geneva
Abstract
The most recent release of the General Catalogue of Variable Stars (GCVS) (Samus et al. 2017) contains 518 different variable types, in eight different variable categories. The catalogue has now reached its 5th version available via the VizieR service and can be considered one of the primary catalogues on the subject. The Gaia Data Release 3 (DR3) contains the most extensive catalogue of variable stars over the entire sky, still it is an intermediate step towards a better understanding of the quality of data and the automated algorithms being put in place to achieve a more concise classification as the work progresses. Ongoing work to identify all variability types in Gaia requires that a complete set of variable classes is represented. We investigated the most recent variability types listed therein, and compared them to the literature used to classify variable stars in Gaia. We have come across close to 10 000 individual variables in the GCVS that are not classified as variable in Gaia DR3, which include 56 variability types – some of which are bright stars. In this investigation, we demonstrate that there are still a large number of those bright stars missing from the Gaia variable classification. Clear indications show that variables with very short (<1 d), and very long periods, were missed by Gaia DR3 Gaia (Prusti et al. 2016 and Vallenari et al. 2022). Moreover, variables with large amplitudes were also missing. We discuss our findings in some detail.
Stichwort
methods: data analysiscataloguesstars: variables: general
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
phaidra.univie.ac.at/o:2023303
Erschienen in
Titel
Monthly Notices of the Royal Astronomical Society
Band
522
Ausgabe
4
ISSN
0035-8711
Erscheinungsdatum
2023
Seitenanfang
6087
Seitenende
6093
Publication
Oxford University Press (OUP)
Erscheinungsdatum
2023
Zugänglichkeit
Rechte
Rechteangabe
© 2023 The Author(s)
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