Results 21 to 30 of about 29,699 (309)
Variable stars in open clusters [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractWe present our joint efforts to study variable stars in open clusters. This includes a new catalogue, a photometric survey for new variables, and the database WEBDA. Our tools will shed more light on stellar variability in open clusters.
Zdeněk Mikulášek +8 more
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A search for variable stars in the four open star clusters [PDF]
Journal of Astrophysics and Astronomy, 2020 11 figures and 4 tables, This article is accepted for publication in ...
Alok Durgapal +5 more
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Binary Star Evolution in Different Environments: Filamentary, Fractal, Halo, and Tidal Tail Clusters
The Astronomical Journal, 2023 Using membership of 85 open clusters from previous studies based on Gaia Data Release 3 data, we identify binary candidates in the color–magnitude diagram for systems with mass ratio q > 0.4.
Xiaoying Pang +9 more
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Dynamics of Open Star Clusters [PDF]
Symposium - International Astronomical Union, 1985 The dynamical evolution of open star clusters has been studied successfully by numerical N-body simulations. We compare in detail the theoretically predicted lifetimes with those derived from the observed age distribution of open clusters. Rare but efficient encounters between clusters and giant molecular clouds are probably responsible for the sudden ...
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Membership Analysis and 3D Kinematics of the Star-forming Complex around Trumpler 37 Using Gaia-DR3
The Astrophysical Journal, 2023 Identifying and characterizing young populations of star-forming regions are crucial to unraveling their properties. In this regard, Gaia-DR3 data and machine-learning tools are very useful for studying large star-forming complexes.
Swagat R. Das +4 more
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A uvbyCaHβ CCD Analysis of the Open Cluster Standard, M67, and Its Relation to NGC 752
The Astronomical Journal, 2023 Precision CCD uvbyCa H β photometry is presented of the old cluster, M67, covering one square degree with typical internal precision at the 0.005–0.020 mag level to V ∼ 17.
Bruce A. Twarog +2 more
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CP3 Stars in Open Clusters [PDF]
International Astronomical Union Colloquium, 1993 AbstractAbt published in 1979 frequencies of peculiar stars in open clusters based on published classifications for 661 stars in 14 open clusters and associations. Among others he discussed an age dependence of the frequencies of CP3 stars and found them increasing with age. Furthermore, he suggested a possible age dependence of the rotational velocity
openaire +2 more sources
SEARCHING FOR Be STARS IN THE OPEN CLUSTER NGC 663 [PDF]
The Astronomical Journal, 2015 23 pages, 7 figures, accepted by ...
P. C. Yu (俞伯傑) +8 more
openaire +7 more sources
Spin alignment of stars in old open clusters [PDF]
Nature Astronomy, 2017 Stellar clusters form by gravitational collapse of turbulent molecular clouds, with up to several thousand stars per cluster. They are thought to be the birthplace of most stars and therefore play an important role in our understanding of star formation, a fundamental problem in astrophysics.
Dennis Stello +9 more
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The Astrophysical Journal Supplement Series, 2023 Using data from Gaia Data Release 3 and Kepler/K2, we present a catalog of 16 open clusters with ages ranging from 4–4000 Myr that provides detailed information on membership, binary systems, and rotation. We assess the memberships in 5D phase space, and
Liu Long +11 more
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