Results 21 to 30 of about 164,968 (341)
The Astrophysical Journal, 1994 Photometric Ha and HP line indices for 71 B stars in seven galactic clusters are presented. Some stars in three of the clusters were observed at two epochs. Using these data nine Be stars were identified. Three of them were previously detected as emission-line stars, while six do not appear to have been previously recognized as such.
Goderya, Shaukat N., Schmidt, Edward G.
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Young Star Clusters in M 31 [PDF]
, 2008 In our study of M31's globular cluster system with MMT/Hectospec, we have obtained high-quality spectra of 85 clusters with ages less than 1 Gyr. With the exception of Hubble V, the young cluster in NGC 205, we find that these young clusters have kinematics and spatial distribution consistent with membership in M31's young disk.
Ricardo P. Schiavon +5 more
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Filamentary Star Formation in NGC 1275 [PDF]
, 2014 We examine the star formation in the outer halo of NGC~1275, the central galaxy in the Perseus cluster (Abell 426), using far ultraviolet and optical images obtained with the Hubble Space Telescope.
Canning, R. E. A +10 more
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Universal Upper End of the Stellar Initial Mass Function in the Young and Compact LEGUS Clusters
The Astrophysical Journal, 2023 We investigate the variation in the upper end of the stellar initial mass function (uIMF) in 375 young and compact star clusters in five nearby galaxies within ∼5 Mpc. All the young stellar clusters (YSCs) in the sample have ages ≲ 4 Myr and masses above
Dooseok Escher Jung +23 more
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Formation of Young Star Clusters [PDF]
Highlights of Astronomy, 2005 AbstractTurbulence, self-gravity, and cooling convert most of the interstellar medium into cloudy structures that form stars. Turbulence compresses the gas into clouds directly and it moves pre-existing clouds around passively when there are multiple phases of temperature.
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Merging black holes in young star clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 15 pages, 11 figures, 5 ...
Long Wang +8 more
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Testing circumstellar disk lifetimes in young embedded clusters associated with the Vela Molecular Ridge [PDF]
, 2010 Context. The Vela Molecular Ridge hosts a number of young embedded star clusters in the same evolutionary stage. Aims. The main aim of the present work is testing whether the fraction of members with a circumstellar disk in a sample of clusters in the ...
Codella, Claudio +5 more
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The Astronomical Journal, 2022 The public, all-sky surveys Gaia and TESS provide the ability to identify new young associations and determine their ages. These associations enable study of planetary evolution by providing new opportunities to discover young exoplanets.
Elisabeth R. Newton +38 more
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Massive White Dwarfs in Young Star Clusters [PDF]
The Astrophysical Journal, 2021 Abstract We have carried out a search for massive white dwarfs (WDs) in the direction of young open star clusters using the Gaia DR2 database. The aim of this survey was (1) to provide robust data for new and previously known high-mass WDs regarding cluster membership, (2) to highlight WDs previously included in the initial final mass ...
Harvey B. Richer +8 more
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Radii of young star clusters in nearby galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT We measure the projected half-light radii of young star clusters in 31 galaxies from the Legacy Extragalactic UV Survey (LEGUS). We implement a custom pipeline specifically designed to be robust against contamination, which allows us to measure radii for 6097 clusters.
Gillen Brown, Oleg Y Gnedin
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