Results 21 to 30 of about 70 (69)
Variable stars in the globular cluster M 92 [PDF]
Astronomy & Astrophysics, 2001 AbstractResults of a search for variable stars in the central region of the Oosterhoff II type globular cluster M92 are presented.
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Globular cluster star classification: Application to M13
Serbian Astronomical Journal, 2013 Starting from recent determination of Fe, O, Na abundances on a restricted sample (N = 67) of halo and thick disk stars, a natural and well motivated selection criterion is defined for the classification globular cluster stars. An application is performed to M13 using a sample (N = 113) for which Fe, O, Na abundances have been recently ...
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Energy distribution in globular star clusters [PDF]
Symposium - International Astronomical Union, 1964 The present investigation is concerned with the energy distributions in globular clusters. In a sense, energy-distribution measurements are comparable with multi-colour photometry. The chief advantage is that narrower band-passes may be used and the entire spectrum traced, whereas in multi-colour photometry one is limited to effective wavelengths ...
L. H. Aller, D. J. Faulkner
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Globular Clusters and Field Halo Stars [PDF]
Symposium - International Astronomical Union, 1988 Recent work on the chemistry and kinematics of the field halo population stars is reviewed, including the metallicity distribution function, elemental abundance patterns, primordial abundances, and their relations with stellar kinematics. The important role played by these stars in determining the ages of the globular clusters is discussed.
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Binary Stars and Globular Cluster Dynamics [PDF]
Proceedings of the International Astronomical Union, 2007 AbstractIn this brief proceedings article I summarize the review talk I gave at the IAU 246 meeting in Capri, Italy, glossing over the well-known results from the literature, but paying particular attention to new, previously unpublished material. This new material includes a careful comparison of the apparently contradictory results of two independent
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Hot Stars in Globular Clusters
, 1998 26 pages, 11 Postscript figures, to appear in Reviews in Modern Astronomy (Astronomische Gesellschaft)
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RR Lyrae Stars in Globular Clusters [PDF]
International Astronomical Union Colloquium, 2000 AbstractOf the several types of variable stars that occur in globular clusters, RR Lyrae stars have deservedly received the most attention. These stars are ideally suited for comparisons between evolution and pulsation theory, they play a prominent role in distance determinations, and are valuable tracers of the oldest stellar populations.
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Variable stars in the VVV globular clusters
Astronomy & AstrophysicsContext. High reddening near the Galactic plane hampers observations and proper characterization of the globular clusters (GCs) located toward the inner regions of the Milky Way. Aims. The VISTA Variables in the Vía Láctea (VVV) survey observed the Galactic bulge and adjacent disk for several years, providing multi-epoch, near-infrared images for 41 ...
Javier Alonso-García +15 more
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Young massive star clusters: globular cluster progenitors?
, 2007 I review the long-term survival chances of young massive star clusters (YMCs), hallmarks of intense starburst episodes often associated with violent galaxy interactions. In particular, I address the key question as to whether at least some of these YMCs can be considered proto-globular clusters (GCs).
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