Results 71 to 80 of about 2,000,138 (297)
CCD Photometry of the Globular Cluster NGC 4372 [PDF]
Journal of Astronomy and Space Sciences, 1994 We present a deep (B, V) color-magnitude diagram (CMD) of the Galactic globular cluster NGC 4372. According to the recent inside-out picture of Galaxy formation, this cluster is predicted to be one of the oldest globular clusters in the Galaxy.
Hong-Suh Yim +2 more
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How Clumpy Star Formation Affects Globular Cluster Systems
Galaxies, 2017 There is now clear evidence the metallicities of globular clusters are not simple tracers of the elemental abundances in their protocluster clouds; some of the heavy elements were formed subsequently within the cluster itself. It is also manifestly clear
Jeremy Bailin
doaj +1 more source
MOCCA code for star cluster simulations – IV. A new scenario for intermediate mass black hole formation in globular clusters [PDF]
, 2015 We discuss a new scenario for the formation of intermediate mass black holes (IMBHs) in dense star clusters. In this scenario, IMBHs are formed as a result of dynamical interactions of hard binaries containing a stellar-mass black hole (BH), with other ...
M. Giersz +6 more
semanticscholar +1 more source
A Type Ia Supernova near a Globular Cluster in the Early-type Galaxy NGC 5353
The Astrophysical Journal LettersNo progenitor of a Type Ia supernova (SN Ia) is known, but in old-population early-type galaxies, one may find SNe Ia associated with globular clusters, yielding a population age and metallicity.
Joel N. Bregman +3 more
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Mass to Luminosity Ratios of Some Clusters in the Large Magellanic Cloud [PDF]
Journal of Astronomy and Space Sciences, 1990 Luminosity profiles and dynamical parameters of 12 globular clusters in the Large Magellanic Cloud (SB(s)m) are obtained from the concentric aperture photoelectric photometry of 3 different aged clusters and the collected photometric data of 9 clusters ...
Young-Jong Sohn, Mun-Suk Chun
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Two views of globular cluster stars in the Galactic halo
EPJ Web of Conferences, 2012 In [1] we reported the discovery in the Sloan Digital Sky Survey-II/SEGUE spectroscopic database of a small subset of halo red giants, 2.5%, with CN and CH band strengths indicative of globular-cluster-like carbon and nitrogen abundances.
Martell S.L.
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DARK MATTER HALOS IN GALAXIES AND GLOBULAR CLUSTER POPULATIONS [PDF]
, 2014 We combine a new, comprehensive database for globular cluster populations in all types of galaxies with a new calibration of galaxy halo masses based entirely on weak lensing.
M. Hudson, G. Harris, W. Harris
semanticscholar +1 more source
Mergers of Globular Clusters [PDF]
The Astrophysical Journal, 1996 Globular clusters with composite color-magnitude diagrams, such as NGC 1851, NGC 2808 and Fornax No. 3, might have formed by mergers. It is suggested that each of these objects had two parent clusters, one with a red horizontal branch and another with a blue horizontal branch.
openaire +3 more sources
Structure of Globular Clusters [PDF]
Highlights of Astronomy, 1998 There was a time, more than a century ago, when Astronomy & Astrophysics was not a European Journal yet, but still an American one. In its Vol. XII, Bailey (1893) published, from photographic observations of two globular clusters (GCs), ω Centauri and 47 Tucanae, what were probably the first extensive star counts, which represent the oldest ...
Georges Meylan, G. A. Drukier
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The Globular Cluster System of the Virgo Cluster Ultradiffuse Galaxy VCC 615
The Astrophysical JournalWe use Hubble Space Telescope imaging to study the globular cluster system of the Virgo Cluster ultradiffuse galaxy (UDG) VCC 615. We select globular cluster candidates through a combination of size and color, while simultaneously rejecting contamination
J. Christopher Mihos +7 more
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