Results 41 to 50 of about 2,153,296 (418)
Globular cluster formation in the Virgo cluster [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 Metal poor globular clusters (MPGCs) are a unique probe of the early universe, in particular the reionization era. Systems of globular clusters in galaxy clusters are particularly interesting as it is in the progenitors of galaxy clusters that the earliest reionizing sources first formed. Although the exact physical origin of globular clusters is still
Moran C. Corbett, Teyssier R., Lake G.
openaire +3 more sources
The Dependence of Globular Cluster Number on Density for Abell Cluster Central Galaxies [PDF]
, 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 devil is in the tails: the role of globular cluster mass evolution on stream properties [PDF]
, 2017 We present a study of the effects of collisional dynamics on the formation and detectability of cold tidal streams. A semi-analytical model for the evolution of the stellar mass function was implemented and coupled to a fast stellar stream simulation ...
E. Balbinot, M. Gieles
semanticscholar +1 more source
Evidence for an intermediate-mass black hole in the globular cluster NGC 6624 [PDF]
, 2017 PSR B1820−30A is located in the globular cluster NGC 6624 and is the closest known pulsar to the centre of any globular cluster. We present more than 25 yr of high-precision timing observations of this millisecond pulsar and obtain four rotational ...
B. Perera +13 more
semanticscholar +1 more source
Gaia EDR3 view on galactic globular clusters [PDF]
Monthly notices of the Royal Astronomical Society, 2021 We use the data from Gaia Early Data Release 3 (EDR3) to study the kinematic properties of Milky Way globular clusters. We measure the mean parallaxes and proper motions (PM) for 170 clusters, determine the PM dispersion profiles for more than 100 ...
E. Vasiliev, H. Baumgardt
semanticscholar +1 more source
Dynamical Substructures of Galactic Globular Clusters I. M5 [PDF]
Journal of Astronomy and Space Sciences, 2004 CCD images to study the dynamical substructure of the globular cluster M5. We investigate the radial variation of ellipticities and position angles using the stellar photometry and the IRAF ellipse task.
Jongwhan Rhee, Young-Jong Sohn
doaj +1 more source
Extragalactic Globular Clusters in the Near-Infrared II. The Globular Clusters Systems of NGC 3115 and NGC 4365 [PDF]
, 2002 We combine near-infrared photometry obtained with the VLT/ISAAC instrument and archival HST/WFPC2 optical images to determine VIK magnitudes and colours of globular clusters in two early-type galaxies, NGC 3115 and NGC 4365.
Brodie, J. P. +7 more
core +5 more sources
MUSE crowded field 3D spectroscopy of over 12 000 stars in the globular cluster NGC 6397 - I. The first comprehensive HRD of a globular cluster [PDF]
, 2016 Aims. We demonstrate the high multiplex advantage of crowded field 3D spectroscopy with the new integral field spectrograph MUSE by means of a spectroscopic analysis of more than 12 000 individual stars in the globular cluster NGC 6397. Methods.
T. Husser +10 more
semanticscholar +1 more source
THE ABUNDANCES IN THE STELLAR ATMOSPHERES IN THE M13 GLOBULAR CLUSTER
Odessa Astronomical Publications, 2017 The chemical composition of 5 stars' atmospheres in globular cluster M13 and 2 halo stars taken from literature have been computed. A slight excess of O and deficit of Mg have been defined for globular cluster stars.
T. V. Mishenina, S. V. Kutsenko
doaj +1 more source
The Astrophysical Journal, 2023 We characterize the optical counterparts to the compact X-ray source population within the nearby spiral galaxy M81 using multiband Hubble Space Telescope (HST) imaging data.
Qiana Hunt +4 more
doaj +1 more source