Results 21 to 30 of about 2,554 (268)
Rotation in Globular Cluster stars [PDF]
Astronomy & Astrophysics, 2003 We present a derivation of upper limits to the rotation of Main Sequence stars in three globular clusters using spectra obtained during time allocated to the ESO Large Programs 165-L0263 and 167.D-0173, with UVES at VLT2 (Kueyen). The stars analyzed in this work do not show any evidence of high values of rotational velocities as far as the outer layers
S. Lucatello, R. G. Gratton
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New Parameters for Star Cluster Dynamics: The Effect of Primordial Binaries and Dark Remnants
The Astrophysical Journal, 2023 By studying the normalized cumulative radial distribution (nCRD) of the stars in the central region of a Monte Carlo-simulated globular cluster, we recently defined three parameters able to pinpoint the stage of internal dynamical evolution reached by ...
B. Bhat +3 more
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Search for variable stars in globular clusters [PDF]
Symposium - International Astronomical Union, 1986 A program to search poorly studied southern globular clusters for variable stars is being carried out on the 1-m Yale telescope at CTIO. Recently two galactic bulge clusters of moderately high metallicity have been found to contain RR Lyrae variables; a cluster of similar metallicity a little farther from the galactic center apparently has none.
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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⊙.
Ivanova, Natalia +2 more
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Star and Globular Cluster Formation in Mergers [PDF]
Symposium - International Astronomical Union, 1996 The high burst strengths and star formation efficiencies found with spectrophotmetric and chemical evolutionary synthesis for mergers of gas-rich spirals led us to expect the formation of a secondary population of globular clusters (GC) with enhanced metallicity (F. – v. A. & Gerhard 1994, A&A 285, 751 u.775).
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THE SEQUENTIAL STAR FORMATION IN GLOBULAR CLUSTERS
Odessa Astronomical Publications, 2008 The results of [O/Na] abundance modelling in globular clusters NGC 2808 and NGC 6752 are presented. The evolutionary scenario allowing to reproduce characteristic observed features of [O/Na] distribution function has been suggested.
M. V. Ryabova, Yu. A. Shchekinov
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Multiple Populations in Low-mass Globular Clusters: Eridanus
The Astrophysical Journal, 2023 Multiple populations (MPs), characterized by variations in light elemental abundances, have been found in stellar clusters in the Milky Way, Magellanic Clouds, as well as several other dwarf galaxies.
Yue Wang +7 more
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Hot stars in globular clusters [PDF]
, 1995 Globular clusters are ideal laboratories to study the evolution of low-mass stars. In this review, I shall concentrate on two types of hot stars observed in globular clusters: horizontal branch stars and UV bright stars. The third type, the white dwarfs, are covered by Bono in this volume.
Sabine Moehler +2 more
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The globular cluster migratory origin of nuclear star clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 19 pages, 20 figures, submitted to ...
ARCA SEDDA, MANUEL +1 more
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On the disc and halo of the milky way through a study of star clusters [PDF]
Serbian Astronomical Journal, 2000 The subject is the metallicity and the correlation between the metallicity and spatial distribution of star clusters of the Milky Way. The open star clusters are confirmed as good indicators for the population of the galactic disc, whereas the globular ...
Nagl M.
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