Results 11 to 20 of about 230,972 (369)
Prospects for Detecting Fast Radio Bursts in the Globular Clusters of Nearby Galaxies
The Astrophysical Journal, 2023 The recent detection of a repeating fast radio burst (FRB) in an old globular cluster in M81 challenges traditional FRB formation mechanisms based on the magnetic activity of young neutron stars formed in core-collapse supernovae.
Kyle Kremer +4 more
doaj +1 more source
The Structure of Globular Clusters [PDF]
Symposium - International Astronomical Union, 1986 We report the preliminary results of a CCD surface photometry survey of a large fraction of all known Galactic globular clusters. About 1/5 of all surveyed clusters show a characteristic post-core-collapse (PCC) morphology. The PCC clusters are on average closer to the Galactic center than the King-model-like clusters.
Djorgovski, S. +4 more
openaire +6 more sources
Binaries in Globular Clusters [PDF]
Highlights of Astronomy, 1998 Binary stars in a globular cluster (hereafter, GC) may be primordial (i.e. formed along with the cluster), or the result of cluster dynamics. “Dynamical” binaries can result from conservative three-body encounters (e.g. Spitzer, 1987) if a third star can carry away enough kinetic energy to leave two others bound, or from dissipative two-body encounters,
McMillan, S. L. W. +2 more
openaire +5 more sources
Globular clusters with Gaia [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 The treatment of crowded fields in Gaia data will only be a reality in a few years from now. In particular, for globular clusters, only the end-of-mission data (public in 2022-2023) will have the necessary full crowding treatment and will reach sufficient quality for the faintest stars.
S. Marinoni +6 more
openaire +3 more sources
Properties of Globular Clusters in Galaxy Clusters: Sensitivity from the Formation and Evolution of Globular Clusters [PDF]
, 2022 We investigate the properties of globular clusters in a galaxy cluster, using the particle tagging method with a semi-analytical approach in a cosmological context. We assume globular clusters form from dark matter halo mergers and their metallicity is assigned based on the stellar mass of the host dark matter halos and the formation redshift of GCs ...
arxiv +1 more source
NOVAE IN GLOBULAR CLUSTERS [PDF]
The Astrophysical Journal, 2013 13 pages, 14 figures, to appear in ...
Izumi Hachisu, Martin Henze, Mariko Kato
openaire +3 more sources
Globular cluster star classification: Application to M13 [PDF]
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
Caimmi R.
doaj +1 more source
Binaries in globular clusters [PDF]
Publications of the Astronomical Society of the Pacific, 1992 Binary stars in a globular cluster (hereafter, GC) may be primordial (i.e. formed along with the cluster), or the result of cluster dynamics. “Dynamical” binaries can result from conservative three-body encounters (e.g. Spitzer, 1987) if a third star can carry away enough kinetic energy to leave two others bound, or from dissipative two-body encounters,
HUT, P +8 more
openaire +4 more sources
Intergalactic Globular Clusters [PDF]
Highlights of Astronomy, 2005 AbstractWe confirm and extend our previous detection of a population of intergalactic globular clusters in Abell 1185, and report the first discovery of an intergalactic globular cluster in the nearby Virgo cluster of galaxies. The numbers, colors and luminosities of these objects can place constraints on their origin, which in turn may yield new ...
Nial R. Tanvir +7 more
openaire +3 more sources
Globular cluster candidates within the Fornax Cluster: Intracluster globulars? [PDF]
Astronomy & Astrophysics, 2003 We present the results of a search for globular clusters in the surroundings of 15 low surface brightness dwarf galaxies belonging to the Fornax Cluster, which was carried out on CCD images obtained with the C and T1 filters of the Washington photometric system.
Boris Dirsch +5 more
openaire +4 more sources