Results 1 to 10 of about 348,228 (250)
, 1993 This review concentrates almost entirely on globular star clusters. It emphasises the increasing realisation that few of the traditional problems of star cluster astronomy can be studied in isolation: the influence of the Galaxy affects dynamical ...
AK Dupree +57 more
core +2 more sources
Nuclear Star Clusters from Clustered Star Formation [PDF]
The Astrophysical Journal, 2010 Photometrically distinct nuclear star clusters (NSCs) are common in late-type-disk and spheroidal galaxies. The formation of NSCs is inevitable in the context of normal star formation in which a majority of stars form in clusters.
Balcells +83 more
core +5 more sources
Chemical evolution of star clusters [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2009 I discuss the chemical evolution of star clusters, with emphasis on old globular clusters, in relation to their formation histories. Globular clusters clearly formed in a complex fashion, under markedly different conditions from any younger clusters ...
Abia C. +6 more
core +5 more sources
The Astronomy and Astrophysics Review, 2020 AbstractWe review the current knowledge about nuclear star clusters (NSCs), the spectacularly dense and massive assemblies of stars found at the centers of most galaxies. Recent observational and theoretical works suggest that many NSC properties, including their masses, densities, and stellar populations, vary with the properties of their host ...
Nadine Neumayer +2 more
openaire +2 more sources
The Astrophysical Journal Supplement Series, 2023 Studying open clusters (OCs) may help to provide a comprehensive understanding of the structure and evolution of the Milky Way. Many previous studies have systematically searched for OCs near the solar system within 1.2 kpc or 20° of Galactic latitude ...
Huanbin Chi +4 more
doaj +1 more source
Dust-buried Compact Sources in the Dwarf Galaxy NGC 4449
The Astrophysical Journal, 2023 Multiwavelength images from the Hubble Space Telescope covering the wavelength range 0.27–1.6 μ m show that the central area of the nearby dwarf galaxy NGC 4449 contains several tens of compact sources that are emitting in the hydrogen recombination line
Daniela Calzetti +12 more
doaj +1 more source
Unveiling Hidden Stellar Aggregates in the Milky Way: 1656 New Star Clusters Found in Gaia EDR3
The Astrophysical Journal Supplement Series, 2022 We report 1656 new star clusters found in the Galactic disk (∣ b ∣ < 20°) beyond 1.2 kpc, using Gaia EDR3 data. Based on an unsupervised machine-learning algorithm, DBSCAN, and following our previous studies, we utilized a unique method to do the data ...
Zhihong He +4 more
doaj +1 more source
Hunting for Neighboring Open Clusters with Gaia DR3: 101 New Open Clusters within 500 pc
The Astrophysical Journal Supplement Series, 2023 We systematically searched for open clusters in the solar neighborhood within 500 pc using the pyUPMASK and HDBSCAN clustering algorithms based on Gaia DR3.
Songmei Qin +3 more
doaj +1 more source
oMEGACat. I. MUSE Spectroscopy of 300,000 Stars within the Half-light Radius of ω Centauri
The Astrophysical Journal, 2023 Omega Centauri ( ω Cen) is the most massive globular cluster of the Milky Way and has been the focus of many studies that reveal the complexity of its stellar populations and kinematics.
M. S. Nitschai +19 more
doaj +1 more source
A Study of Be Stars in Clusters [PDF]
Symposium - International Astronomical Union, 1976 Calibrated spectrograms at Hα of 566 stars in 29 young galactic clusters led to the detection of 41 Be stars in clusters. Using cluster membership we have inferred ages and intrinsic (B – V) colors of Be stars to permit a discussion of their evolutionary states.Rotating stars can become Be stars in their early hydrogen burning evolution away from the ...
R. Schild, W. Romanishin
openaire +3 more sources