Open clusters housing classical Cepheids in Gaia DR3
C. J. Hao, Y. Xu, Z. Y. Wu, Z. H. Lin, S. B. Bian, Y. J. Li, D. J. Liu
TL;DR
This study uses Gaia DR3 data to identify and analyze open clusters containing classical Cepheids, enhancing the understanding of the cosmic distance scale with new cluster and Cepheid associations.
Contribution
It provides the first comprehensive catalog of open clusters with classical Cepheids in Gaia DR3, including new cluster candidates and probable cluster-Cepheid pairs.
Findings
50 classical Cepheids associated with 45 open clusters
39 probable cluster-Cepheid pairs identified
38 new open cluster candidates discovered
Abstract
The latest Gaia Data Release 3 provides an opportunity to expand the census of Galactic open clusters harboring classical Cepheid variables, thereby bolstering the cosmic distance scale. A comprehensive analysis yielded a total of 50 classical Cepheids associated with 45 open clusters, of which 39 open cluster-classical Cepheid pairs are considered probable, with the remaining 11 pairs considered improbable but worth following up. Two previously identified clusters by us possibly host classical Cepheids (OC-0125/V1788 Cyg and OC-0675/OGLE-BLG-CEP-114). In addition, we identify 38 new open cluster candidates within the Galactic disk.
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astronomy and Astrophysical Research · Space Exploration and Technology