Results 21 to 30 of about 2,622,417 (397)
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
The Role of Binarity and Stellar Rotation in the Split Main Sequence of NGC 2422
The Astrophysical Journal, 2022 In addition to the extended main-sequence turnoffs widely found in young and intermediate-age (∼600 Myr to 2 Gyr old) star clusters, some younger clusters even exhibit split main sequences (MSs).
Chenyu He +10 more
doaj +1 more source
Star Clusters Across Cosmic Time [PDF]
Annual Review of Astronomy and Astrophysics, 2018 Star clusters stand at the intersection of much of modern astrophysics: the ISM, gravitational dynamics, stellar evolution, and cosmology. Here, we review observations and theoretical models for the formation, evolution, and eventual disruption of star ...
M. Krumholz, C. McKee, J. Bland-Hawthorn
semanticscholar +1 more source
A Catalog of Newly Identified Star Clusters in Gaia DR2 [PDF]
Astrophysical Journal Supplement Series, 2019 We present the Star cluster Hunting Pipeline (SHiP) that can identify star clusters in Gaia second data release (DR2) data and establish a star cluster catalog for the Galactic disk. A friend-of-friend-based cluster finder method is used to identify star
Lei Liu, X. Pang
semanticscholar +1 more source
Variable stars in clusters [PDF]
Astronomische Nachrichten, 1898 n ...
S. I. Bailey, E. C. Pickering
openaire +4 more sources
Merging black holes in young star clusters [PDF]
Monthly notices of the Royal Astronomical Society, 2019 Searching for distinctive signatures, which characterize different formation channels of binary black holes (BBHs), is a crucial step towards the interpretation of current and future gravitational wave detections.
Ugo N Di Carlo +6 more
semanticscholar +1 more source
Modeling Dense Star Clusters in the Milky Way and Beyond with the CMC Cluster Catalog [PDF]
Astrophysical Journal Supplement Series, 2019 We present a set of 148 independent N-body simulations of globular clusters (GCs) computed using the code CMC (Cluster Monte Carlo). At an age of ∼10–13 Gyr, the resulting models cover nearly the full range of cluster properties exhibited by the Milky ...
K. Kremer +8 more
semanticscholar +1 more source
Molecular Gas Properties in Young Stellar Clusters with a Suppressed Star Cluster Wind
The Astrophysical Journal Letters, 2023 In compact and dense star-forming clouds a global star cluster wind could be suppressed. In this case stellar feedback is unable to expel the leftover gas from the cluster. Young massive stars remain embedded in a dense residual gas and stir it by moving
Sergiy Silich +3 more
doaj +1 more source
Black holes: The next generation—repeated mergers in dense star clusters and their gravitational-wave properties [PDF]
Physical Review D, 2019 When two black holes merge in a dense star cluster, they form a new black hole with a well-defined mass and spin. If that "second-generation" black hole remains in the cluster, it will continue to participate in dynamical encounters, form binaries, and ...
C. Rodriguez +6 more
semanticscholar +1 more source
Kinematics in Young Star Clusters and Associations with Gaia DR2 [PDF]
Astrophysical Journal, 2018 The Gaia mission has opened a new window into the internal kinematics of young star clusters at the sub-km s−1 level, with implications for our understanding of how star clusters form and evolve.
M. Kuhn +4 more
semanticscholar +1 more source