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Related papers: Mapping the galaxy NGC 4486 (M87) through its Glob…

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We present recent results from our long-term Gemini/GMOS study of globular clusters in early-type galaxies. To date, we have obtained photometry and spectroscopy for clusters in NGCs 3379, 4649, 524, 7332, and IC 1459. We find a clear…

We have discovered three globular clusters beyond the Holmberg radius in Hubble Space Telescope Advanced Camera for Surveys images of the gas-rich dark matter dominated blue compact dwarf galaxy NGC2915. The clusters, all of which start to…

We present a comprehensive study of the luminosity function and spatial structure of the globular cluster system of NGC 4472, based on deep wide field Washington CT1 CCD images. The globular cluster luminosity function shows a peak at…

Astrophysics · Physics 2009-10-30 Myung Gyoon Lee , Eunhyeuk Kim , Doug Geisler

There is now strong evidence that the metal-rich globular clusters (GC) near the center of our Galaxy are associated with the Galactic bulge rather than the disk as previously thought. Here we extend the concept of bulge GCs to the GC…

Astrophysics · Physics 2009-11-06 Duncan A. Forbes , Jean P. Brodie , Soeren S. Larsen

The presence of Multiple Stellar Populations (MSPs) in Galactic Globular Clusters (GCs) is a poorly understood phenomenon. By probing different spectral ranges that are affected by different absorption lines using the multi-band photometric…

We report the discovery in our HST ACS B, V, and I images of NGC 4449 of a globular cluster (GC) which appears associated with two tails of blue stars. The cluster is massive (M~1.7x10^6 M_sun) and highly flattened (\epsilon~0.24). From the…

Cosmology and Nongalactic Astrophysics · Physics 2011-11-28 Francesca Annibali , Monica Tosi , Alessandra Aloisi , Roeland P. van der Marel , David Martinez-Delgado

We present a catalog of 422 galaxies with published measurements of their globular cluster (GC) populations. Of these, 248 are E galaxies, 93 are S0 galaxies, and 81 are spirals or irregulars. Among various correlations of the total number…

Astrophysics of Galaxies · Physics 2015-06-16 William E. Harris , Gretchen L. H. Harris , Matthew Alessi

We explore the rich globular cluster (GC) system of the nearby Sa galaxy M104, the "Sombrero" (NGC 4594), using archive WFPC2 data. The GC colour distribution is found to be bimodal at the > 99% level, with peaks at V-I = 0.96+/-0.03 and…

Astrophysics · Physics 2009-11-06 Soeren S. Larsen , Duncan A. Forbes , Jean P. Brodie

Galactic globular clusters (GCs) are now known to host multiple populations displaying particular abundance variations. The different populations within a GC can be well distinguished following their position in the pseudo two-colors…

Solar and Stellar Astrophysics · Physics 2019-10-16 M. Latour , T. -O. Husser , B. Giesers , S. Kamann , F. Goettgens , S. Dreizler , J. Brinchmann , N. Bastian , M. Wendt , P. M. Weilbacher , N. S. Molinski

In this paper we present the results of a wide-field imaging study of the globular cluster (GC) system of the field S0 galaxy NGC 7457. To derive the global properties of the GC system, we obtained deep BVR images with the WIYN 3.5 m…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Jonathan R. Hargis , Katherine L. Rhode , Jay Strader , Jean P. Brodie

The relation between the total mass contained in the globular clusters of a galaxy and the mass of its dark matter halo has been found observationally to be nearly linear over five decades of mass. However, the high-mass end of this…

Astrophysics of Galaxies · Physics 2023-07-05 Veronika Dornan , William E. Harris

We present a study of the globular cluster systems of four early-type poststarburst galaxies using deep g and I-band images from the ACS camera aboard the Hubble Space Telescope (HST). All the galaxies feature shells distributed around…

Aims: We present the first in-depth study of the kinematic properties and derive the structural parameters of NGC 4372 based on the fit of a Plummer profile and a rotating, physical model. We explore the link between internal rotation to…

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…

Astrophysics of Galaxies · Physics 2023-03-01 William E. Harris

We present the results from a wide-field imaging study of globular cluster (GC) systems in three early-type galaxies. Combinations of Subaru/Suprime-Cam, CFHT/MegaCam and HST/WFPC2/ACS data were used to determine the GC system properties of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 Sreeja S. Kartha , Duncan A. Forbes , Lee R. Spitler , Aaron J. Romanowsky , Jacob A. Arnold , Jean P. Brodie

We use available multifilter Hubble Space Telescope (HST) WFPC2 imaging of five (M81, M83, NGC 6946, M101, and M51) low inclination, nearby spiral galaxies to study ancient star cluster populations. M81 globular clusters (GC) have an…

Astrophysics · Physics 2009-11-10 Rupali Chandar , Bradley Whitmore , Myung Gyoon Lee

An increasing body of data reveals a one-to-one linear correlation between galaxy halo mass and the total mass in its globular cluster (GC) population, M_{GCS} ~ M_h^{1.03 \pm 0.03}, valid over 5 orders of magnitude. We explore the nature…

Astrophysics of Galaxies · Physics 2015-06-11 William Harris , Gretchen Harris , Michael Hudson

A detailed imaging analysis of the globular cluster (GC) system of the Sombrero galaxy (NGC 4594) has been accomplished using a six-image mosaic from the Hubble Space Telescope Advanced Camera for Surveys. The quality of the data is such…

Astrophysics · Physics 2008-11-26 L. R. Spitler , S. S. Larsen , J. Strader , J. P. Brodie , D. A. Forbes , M. A. Beasley

1057 globular cluster candidates have been identified in a WFPC2 image of the inner region of M87. The Globular Cluster Luminosity Function (GCLF) can be well fit by a Gaussian profile with a mean value of m_V^0=23.67 +/- 0.07 mag and…

Astrophysics · Physics 2009-10-05 A. Kundu , B. C. Whitmore , W. B. Sparks , F. D. Macchetto , S. E. Zepf , K. M. Ashman

Luminous elliptical galaxies generally display a rich star cluster system, whose properties provide strong constraints on the physics of galaxy formation and evolution. Star cluster system studies, however, concentrate on galaxies located…

Astrophysics · Physics 2009-11-13 B. X. Santiago