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Globular Clusters

Structural Parameters of the M87 Globular Clusters

Structural Parameters of the M87 Globular Clusters

... 2000 clusters, each with different size cannot be measured with either standard PSF-fitting or fixed aperture ...for globular clusters than their adopted ratio of r t /r c = 10 (see section 5 ...

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Bright globular clusters in NGC 5128: the missing link between young massive clusters and evolved massive objects

Bright globular clusters in NGC 5128: the missing link between young massive clusters and evolved massive objects

... for globular clusters in NGC 5128 (Cen A; black filled circles, this ...Gyr) clusters in Local Group galaxies, as well as with transition objects between globular clus- ters and dwarf ...

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Globular Clusters and X Ray Point Sources in Centaurus A (NGC 5128)

Globular Clusters and X Ray Point Sources in Centaurus A (NGC 5128)

... We detect 353 X-ray point sources, mostly low-mass X-ray binaries ( LMXBs), in four Chandra observations of Centaurus A ( NGC 5128), the nearest giant early-type galaxy, and correlate this point-source population with ...

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Luminosity functions of LMXBs in centaurus a : globular clusters versus the field

Luminosity functions of LMXBs in centaurus a : globular clusters versus the field

... of globular clusters, in rough agreement with the statistics of globular clus- ter sources in the Milky ...in globular clusters in nearby ...

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Variable stars in large magellanic cloud globular clusters  I  NGC 1466

Variable stars in large magellanic cloud globular clusters I NGC 1466

... This is the first in a series of papers studying the variable stars in Large Magellanic Cloud globular clusters. The primary goal of this series is to better understand how the RR Lyrae stars in ...

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The detection of globular clusters in galaxies as a data mining problem

The detection of globular clusters in galaxies as a data mining problem

... We present an application of self-adaptive supervised learning classifiers derived from the machine learning paradigm to the identification of candidate globular clusters in deep, wide- field, single-band ...

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Variable stars in large magellanic cloud globular clusters  II  NGC 1786

Variable stars in large magellanic cloud globular clusters II NGC 1786

... This is the second in a series of papers studying the variable stars in Large Magellanic Cloud globular clusters. The primary goal of this series is to study how RR Lyrae stars in Oosterhoff-intermediate ...

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VLT Spectroscopy of Globular Clusters in Low Surface Brightness Dwarf Galaxies

VLT Spectroscopy of Globular Clusters in Low Surface Brightness Dwarf Galaxies

... genuine globular clusters. We could also confirm five additional globular clusters in our sample ...Two clusters appear to be the nuclei of KK 84 and KK ...confirmed globular ...

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Cluster AgeS Experiment (CASE): deficiency of observed dwarf novae in globular clusters

Cluster AgeS Experiment (CASE): deficiency of observed dwarf novae in globular clusters

... We present the results of a search for dwarf novae (DNe) in globular clusters (GCs). It is based on the largest available homogeneous sample of observations, in terms of the time- span, number of ...

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Structural parameters and blue stragglers in Sagittarius dwarf spheroidal galaxy globular clusters

Structural parameters and blue stragglers in Sagittarius dwarf spheroidal galaxy globular clusters

... of globular clusters have been putatively associated with ...other globular clusters have been consid- ered as (former) members of the Sgr cluster system that have been stripped away due to ...

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METALLICITY EFFECT ON LOW MASS X RAY BINARY FORMATION IN GLOBULAR CLUSTERS

METALLICITY EFFECT ON LOW MASS X RAY BINARY FORMATION IN GLOBULAR CLUSTERS

... of globular clusters (GCs) that contain low-mass X-ray binaries (LMXB), by utilizing all available data obtained with Chandra for LMXBs and Hubble Space Telescope Advanced Camera for Surveys (ACS) for ...

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TIME SERIES PHOTOMETRY OF GLOBULAR CLUSTERS: M62 (NGC 6266), THE MOST RR LYRAE RICH GLOBULAR CLUSTER IN THE GALAXY?

TIME SERIES PHOTOMETRY OF GLOBULAR CLUSTERS: M62 (NGC 6266), THE MOST RR LYRAE RICH GLOBULAR CLUSTER IN THE GALAXY?

... Galactic globular cluster M62 (NGC ...present) globular clusters known in the Galaxy, second only to M3 (NGC 5272) with a total of 230 known RR Lyrae ...Lyrae-rich globular cluster in the ...

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On the DeltaV^bump HB parameter in Globular Clusters

On the DeltaV^bump HB parameter in Globular Clusters

... Globular clusters (GCs) possess several evolutionary features that show up in the color–magnitude diagram (CMD) and/or in the luminosity function ...

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Uncloaking globular clusters in the inner galaxy

Uncloaking globular clusters in the inner galaxy

... The globular cluster (GC) system of the Milky Way has long been used to learn about the evolution of the ...Galactic globular clusters (GGCs) constitute some of the oldest systems in the Milky Way, ...

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The ACS Virgo Cluster Survey  XV  The Formation Efficiencies of Globular Clusters in Early Type Galaxies: The Effects of Mass and Environment

The ACS Virgo Cluster Survey XV The Formation Efficiencies of Globular Clusters in Early Type Galaxies: The Effects of Mass and Environment

... in globular clusters (GCs), also measured by number as the specific frequency, is a fundamental quantity that reflects both a galaxy’s early star formation and its entire merging ...the globular ...

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Chemical Abundances of the Highly Obscured Galactic Globular Clusters 2MASS GC02 and Mercer 5

Chemical Abundances of the Highly Obscured Galactic Globular Clusters 2MASS GC02 and Mercer 5

... of globular clusters and their stellar popula- tions provide fundamental information on the environment where galaxies formed and on the Galactic formation process, and are also a basic ingredient for the ...

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Old Globular Clusters in Magellanic Type Dwarf Irregular Galaxies

Old Globular Clusters in Magellanic Type Dwarf Irregular Galaxies

... We have searched for old globular clusters in 19 Magellanic- type dwarf Irregular (dIrr) galaxies utilizing archival F606W and F814W HST/ACS images. The main goal of this study is to assess the properties ...

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New insights into the star formation histories of candidate intermediate age early type galaxies from K' band imaging of globular clusters

New insights into the star formation histories of candidate intermediate age early type galaxies from K' band imaging of globular clusters

... bright globular clusters (GCs) in the candidate intermediate-age early-type galaxies NGC 3610, 584 and 3377 using a combination of new Gemini’s Near InfraRed Imager and Spectrometer K -band imaging and ...

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The Formation of Spheroids in Early type Spirals: Clues from Their Globular Clusters

The Formation of Spheroids in Early type Spirals: Clues from Their Globular Clusters

... an assumed age of 13 Gyr. The GALEV models are calibrated to the ACS filters and treat the chemical evolution of the gas and the spectral evolution of the stellar content simultaneously. They also include absorption as ...

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SAO RAS 6 m telescope spectroscopic observations of globular clusters in nearby galaxies

SAO RAS 6 m telescope spectroscopic observations of globular clusters in nearby galaxies

... younger clusters than if one used the TMB03 ...for clusters HoIX-3-1038 and object 13 in UGCA86 (see Table 7) agree well with those obtained with the full spectrum fitting method (see below), while in all ...

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