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Related papers: Globular Clusters around Galaxies in Groups

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This paper explores the quantitative connection between globular clusters and the diffuse stellar population of the galaxies they are associated with. Both NGC 1399 and NGC 4486 (M87) are well suited for this kind of analysis due to their…

Astrophysics · Physics 2009-11-13 J. C. Forte , F. R. Faifer , D. Geisler

This Letter presents the color distributions of the globular cluster (GC) systems of 12 Virgo elliptical galaxies, measured using data from the Hubble Space Telescope. Bright galaxies with large numbers of detected GC's show two distinct…

Astrophysics · Physics 2012-08-27 Eric H. Neilsen, , Zlatan I. Tsvetanov

We present velocity dispersion measurements of 14 globular clusters in NGC 5128 (Centarus A) obtained with the MIKE echelle spectrograph on the 6.5m Magellan Clay telescope. These clusters are among the most luminous globular clusters in…

Astrophysics · Physics 2009-11-10 Paul Martini , Luis C. Ho

We study the kinematics and dynamics of the globular cluster system of NGC 1399, the central galaxy of the Fornax cluster. The observational data consists of medium resolution spectra, obtained at the Very Large Telescope. Our sample…

We present wide-field multiband photometry of globular cluster (GC) systems in NGC 1399, NGC 1404, and NGC 1387 located at the central region of the Fornax galaxy cluster. Observation was carried out through U, B, V, and I bands, which…

Astrophysics of Galaxies · Physics 2015-06-12 Hak-Sub Kim , Suk-Jin Yoon , Sangmo Tony Sohn , Sang Chul Kim , Eunhyeuk Kim , Chul Chung , Sang-Yoon Lee , Young-Wook Lee

We investigate the unusually rich cluster system of NGC4636 with wide-field Washington photometry. The globular cluster luminosity function can be followed roughly 1 mag beyond the turn-over magnitude. This corresponds to a distance modulus…

Astrophysics · Physics 2016-08-30 Boris Dirsch , Ylva Schuberth , Tom Richtler

We present a study of globular clusters in the inner region of the giant elliptical galaxy NGC 4472, based on the HST WFPC2 archive data. We have found about 1560 globular cluster candidates at the galactocentric radius r < 4 arcmin.…

Astrophysics · Physics 2009-10-31 Myung Gyoon Lee , Eunhyeuk Kim

We performed spectroscopy of globular clusters associated with NGC 1399 and measured radial velocities of more than 400 clusters, the largest sample ever obtained for dynamical studies. In this progress report, we present the sample and the…

We study the globular cluster system (GCS) of the giant elliptical NGC4374 (M84) in the Virgo cluster using B and R photometry. The colour distribution is bimodal with peaks at B-R=1.11 and B-R=1.36, fitting well to those found in other…

Astrophysics · Physics 2009-11-10 M. Gomez , T. Richtler

We report moderate resolution, high signal-to-noise spectroscopy of globular clusters around NGC 1399, the central cD galaxy in the Fornax cluster. We address issues as diverse as element abundances of globular clusters versus stellar…

We present the serendipitous discovery of 195 extragalactic globular clusters (GCs) in one of the deepest optical images ever obtained, a 126 orbit HST/ACS imaging study of the nearby Galactic GC NGC 6397. The distant GCs are all found…

Astrophysics · Physics 2009-11-13 Jasonjot S. Kalirai , Jay Strader , Harvey B. Richer , Jay Anderson

In this work we perform the photometric analysis of the globular cluster system (GCS) of the giant elliptical NGC4696, which is the brightest member of Centaurus, a rich and dynamically young galaxy cluster. We obtained deep Magellan 6.5…

Astrophysics of Galaxies · Physics 2024-09-25 S. Federle , M. Gómez , S. Mieske , W. E. Harris , M. Hilker , I. A. Yegorova , G. L. H. Harris

We present 8 bright globular clusters and/or objects of less familiar nature which we found in the course of scrutinizing the globular cluster system of NGC 1399. These objects are morphologically striking, either by their sizes or by other…

Astrophysics · Physics 2009-11-11 T. Richtler , B. Dirsch , S. Larsen , M. Hilker , L. Infante

Extensive photometric studies of the globular clusters located towards the center of the Milky Way have been historically neglected. The presence of patchy differential reddening in front of these clusters has proven to be a significant…

In this contribution, first results of deep VLT photometry (V,I) in the central region of the Hydra I and Centaurus galaxy clusters are presented. In both galaxy clusters, many star clusters have been identified down to the turnover…

Astrophysics · Physics 2007-05-23 Michael Hilker

The large-scale distribution of globular clusters in the central region of the Coma cluster of galaxies is derived through the analysis of Hubble Space Telescope/Advanced Camera for Surveys data. Data from three different HST observing…

Astrophysics of Galaxies · Physics 2018-11-30 Juan P. Madrid , Conor R. O'Neill , Alexander T. Gagliano , Joshua R. Marvil

We investigate the globular cluster system around the low-luminosity S0 galaxy NGC 7457 with deep B, V, I photometry. From the V photometry the total number of globular clusters around the galaxy is estimated to be 178 +- 75. The specific…

Astrophysics · Physics 2007-05-23 S. Chapelon , V. Buat , D. Burgarella , M. Kissler-Patig

We investigate the kinematics of a combined sample of 74 globular clusters around NGC 1399. Their high velocity dispersion, increasing with radius, supports their association with the gravitational potential of the galaxy cluster rather…

The relation between the Ultra Compact Objects (UCOs) recently discovered in the Fornax cluster (Drinkwater et al. 2000, Hilker et al. 1999) and the brightest globular clusters associated with the central galaxy NGC 1399 has been…

Astrophysics · Physics 2009-11-07 Steffen Mieske , Michael Hilker , Leopoldo Infante

Shells in Elliptical Galaxies are faint, sharp-edged features, believed to provide evidence of a recent ($\sim 0.5 - 2 \times 10^9$ years ago) merger event. We analyse the Globular Cluster (GC) systems of six shell elliptical galaxies, to…

Astrophysics · Physics 2009-11-11 G. Sikkema , R. F. Peletier , D. Carter , E. A. Valentijn , M. Balcells