Results 11 to 20 of about 36,679 (341)
The Structure of the Globular Star Clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 1945 E. Finlay-Freundlich
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Formation and Disruption of Globular Star Clusters [PDF]
Symposium - International Astronomical Union, 2002 In the first part of this article, we review observations of the mass and luminosity functions of young and old star cluster systems. We also review some of the physical processes that may determine the characteristic mass of globular clusters and the form of their mass function.
S. Michael Fall, Qing Zhang
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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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Neutron Stars in Globular Clusters [PDF]
Proceedings of the International Astronomical Union, 2007 AbstractDynamical interactions that occur between objects in dense stellar systems are particularly important for the question of formation of X-ray binaries. We present results of numerical simulations of 70 globular clusters with different dynamical properties and a total stellar mass of 2×107M⊙.
Craig O. Heinke +2 more
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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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Dynamics of Stars and Globular Clusters in M87 [PDF]
The Astrophysical Journal, 2001 We examine the dynamics of the stars and globular clusters in the nearby giant galaxy M87 and constrain the mass distribution, using all the available data over a large range of radii, including higher-order moments of the stellar line-of-sight velocity distributions and the discrete velocities of over two hundred globular clusters.
Christopher S. Kochanek +2 more
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Massive star archeology in globular clusters [PDF]
Proceedings of the International Astronomical Union, 2014 AbstractGlobular clusters are among the oldest structures in the Universe and they host today low-mass stars and no gas. However, there has been a time when they formed as gaseous objects hosting a large number of short-lived, massive stars. Many details on this early epoch have been depicted recently through unprecedented dissection of low-mass ...
Chantereau, W. +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 absence of symbiotic stars in globular clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT Even though plenty of symbiotic stars (SySts) have been found in the Galactic field and nearby galaxies, not a single one has ever been confirmed in a Galactic globular cluster (GC). We investigate the lack of such systems in GCs for the first time by analysing 144 GC models evolved with the mocca code, which have different ...
K. Iłkiewicz +7 more
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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-
Masashi Chiba, Kenji Bekki
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