Results 1 to 10 of about 102,398 (346)

Prospects for Detecting Fast Radio Bursts in the Globular Clusters of Nearby Galaxies

open access: yesThe 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

Globular cluster star classification: Application to M13 [PDF]

open access: yesSerbian 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

Globular cluster system erosion and nucleus formation in elliptical galaxies [PDF]

open access: yes, 1998
The radial distribution of globular clusters in galaxies is always less peaked to the centre than the halo stars'. Extending previous work to a sample of HST globular cluster systems in ellipticals, we evaluate the number of clusters lost to the galactic
Capuzzo-Dolcetta, R., Tesseri, A.
core   +2 more sources

The Milky Way Bulge Extra-tidal Star Survey: BH 261 (AL 3)

open access: yesThe Astronomical Journal, 2023
The Milky Way Bulge extra-tidal star survey is a spectroscopic survey with the goal of identifying stripped globular cluster stars from inner Galaxy clusters.
Andrea Kunder   +21 more
doaj   +1 more source

Dynamics of the Globular Cluster System Associated with M87 (NGC 4486). II. Analysis [PDF]

open access: yes, 2001
We present a dynamical analysis of the globular cluster system associated with M87 (= NGC 4486), the cD galaxy near the dynamical center of the Virgo cluster.
Bender R.   +20 more
core   +2 more sources

HST Imaging of the Globular Clusters in the Fornax Cluster: NGC 1399 and NGC 1404 [PDF]

open access: yes, 1997
The Fornax cluster galaxies NGC 1399 and NGC 1404 are ideal for studying the effects of a cluster environment on globular cluster systems. Here we present new optical imaging of these two galaxies from both the Hubble Space Telescope's Wide Field and ...
Carl J. Grillmair   +5 more
core   +4 more sources

A Photometric Survey of Globular Cluster Systems in Brightest Cluster Galaxies

open access: yesThe Astrophysical Journal Supplement Series, 2023
Hubble Space Telescope imaging for 26 giant early-type galaxies, all drawn from the MAST archive, is used to carry out photometry of their surrounding globular cluster (GC) systems. Most of these targets are Brightest Cluster Galaxies and their distances
William E. Harris
doaj   +1 more source

The Dependence of Globular Cluster Number on Density for Abell Cluster Central Galaxies [PDF]

open access: yes, 1997
A study of the globular cluster systems of 23 brightest, or central, galaxies in 19 Abell clusters has recently been completed. This Letter presents some of the newly discovered correlations of the globular cluster specific frequency $S_N$ in these ...
Blakeslee, John P.
core   +3 more sources

The GeMS/GSAOI Galactic Globular Cluster Survey (G4CS). II. Characterization of 47 Tuc with Bayesian Statistics

open access: yesThe Astrophysical Journal, 2023
We present a photometric analysis of globular cluster 47 Tuc (NGC 104) using near-IR imaging data from the GeMS/GSAOI Galactic Globular Cluster Survey (G4CS), which is in operation at Gemini-South telescope.
Mirko Simunovic   +7 more
doaj   +1 more source

Constraining Co-Varying Coupling Constants from Globular Cluster Age

open access: yesUniverse, 2023
Equations governing the evolution of a star involve multiple coupling constants. Thus, the time it spends as a main-sequence star can be expected to depend on whether or not such constants vary over the time scale of stellar evolution.
Rajendra P. Gupta
doaj   +1 more source

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