Results 31 to 40 of about 87,149 (376)
EVOLUTION OF THE MASS AND LUMINOSITY FUNCTIONS OF GLOBULAR STAR CLUSTERS [PDF]
, 2016 We reexamine the dynamical evolution of the mass and luminosity functions of globular star clusters (GCMF and GCLF). Fall & Zhang (2001, FZ01) showed that a power-law MF, as commonly seen among young cluster systems, would evolve by dynamical processes ...
P. Goudfrooij, S. M. Fall
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Young Star Clusters: Progenitors of Globular Clusters!? [PDF]
Highlights of Astronomy, 2005 AbstractStar cluster formation is a major mode of star formation in the extreme conditions of interacting galaxies and violent starbursts. Young clusters are observed to form in a variety of such galaxies, a substantial number resembling the progenitors of globular clusters in mass and size, but with significantly enhanced metallicity.
Anders, Peter +2 more
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Blue hook stars in globular clusters [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2009 Abstract Blue hook (BHk) stars are a rare class of horizontal branch stars that have so far been found in only very few Galactic globular clusters (GCs). The dominant mechanism for producing these objects is currently still unclear.
Dieball, A. +6 more
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On the theory of globular star-clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 1947 E. Finlay-Freundlich
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Massive Stars and Globular Cluster Formation [PDF]
The Astrophysical Journal, 2007 We first present chemodynamical simulations to investigate how stellar winds of massive stars influence early dynamical and chemical evolution of forming globular clusters (GCs). In our numerical models, GCs form in turbulent,high-density giant molecular clouds (GMCs), which are embedded in a massive dark matter halo at high redshifts. We show how high-
Bekki, Kenji, Chiba, Masashi
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On the Rate of Neutron Star Binary Mergers from Globular Clusters [PDF]
Astrophysical Journal, 2019 The first detection of gravitational waves from a neutron star–neutron star (NS–NS) merger, GW170817, and the increasing number of observations of short gamma-ray bursts have greatly motivated studies of the origins of NS–NS and neutron star–black hole ...
Claire S. Ye +6 more
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Axial Rotation of Globular Star Clusters [PDF]
Nature, 1936 THE axial rotation of globular star clusters has not yet been measured, so far as we know, from the differences of radial velocities at their opposite edges, but indirect evidence of their rotation is the observed ellipticity. The oblateness e of a rotating body depends on the ratio of the centrifugal force to the gravity at the star's surface ; that ...
Kopal, Zdeněk, Slouka, Hubert
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Probing the Faintest Stars in a Globular Star Cluster [PDF]
Science, 2006 NGC 6397 is the second closest globular star cluster to the Sun. Using 5 days of time on the Hubble Space Telescope, we have constructed an ultradeep color-magnitude diagram for this cluster. We see a clear truncation in each of its two major stellar sequences.
Richer, Harvey B. +12 more
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First Evidence of Multi-iron Subpopulations in the Bulge Fossil Fragment Candidate Liller 1
The Astrophysical Journal, 2023 In the context of a project aimed at characterizing the properties of the so-called Bulge Fossil Fragments (the fossil remnants of the bulge formation epoch), here we present the first determination of the metallicity distribution of Liller 1.
Chiara Crociati +11 more
doaj +1 more source
Can Neutron-star Mergers Explain the r-process Enrichment in Globular Clusters? [PDF]
Astrophysical Journal, 2019 Star-to-star dispersion of r-process elements has been observed in a significant number of old, metal-poor globular clusters (GCs). We investigate early-time neutron-star mergers as the mechanism for this enrichment.
M. Zevin +6 more
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