2022•arXiv (Cornell University)Open access
Open clusters housing classical Cepheids in Gaia DR3
Chaojie Hao, Y. Xu, Z. Y. Wu, Z. H. Lin, S. B. Bian, Y. J. Li, D. J. Liu
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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.