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相关论文: Spectroscopy of Globular Clusters in NGC 1399 - A …

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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 preliminary results of our dynamical study of the outer globular cluster system of NGC 1399, the central galaxy in the Fornax Cluster. About 160 new radial velocities for globular clusters at projected galactocentric distances…

天体物理学 · 物理学 2007-05-23 Y. Schuberth , T. Richtler , B. Dirsch , M. Hilker , S. Larsen

Radial velocities of 468 globular clusters around NGC 1399, the central galaxy in the Fornax cluster, have been obtained with FORS2 and the Mask Exchange Unit (MXU) at the ESO Very Large Telescope. This is the largest sample of globular…

We report on the radial velocity measurements of 18 globular clusters and one dE galaxy in the field of the giant elliptical galaxy NGC 1399, the dominant galaxy of the Fornax cluster. We present also the radial velocity measurements of…

天体物理学 · 物理学 2009-10-30 Dante Minniti , Markus Kissler-Patig , Paul Goudfrooij , Georges Meylan

We present a photometric investigation of the globular cluster population of NGC 1399, the central galaxy in the Fornax cluster, in Washington C and Kron R filters within a field of 36'x36'. This is the largest area around this galaxy ever…

Optical multi-slit spectra have been obtained for 47 globular clusters surrounding the brightest Virgo elliptical NGC 4472 (M49). Including data from the literature, we analyze velocities for a total sample of 57 clusters and present the…

天体物理学 · 物理学 2009-10-30 R. M. Sharples , S. E. Zepf , T. J. Bridges , D. A. Hanes , D. Carter , K. M. Ashman , D. Geisler

Globular cluster systems (GCS) frequently show a bi-modal distribution of the cluster integrated colours. This work explores the arguments to support the idea that the same feature is shared by the diffuse stellar population of the galaxy…

天体物理学 · 物理学 2009-11-10 Juan C. Forte , Favio Faifer , Doug Geisler

(Abridged) We use the largest set of globular cluster velocities obtained so far of any elliptical galaxy to revise and extend the previous investigations of the dynamics of NGC 1399, the central dominant galaxy of the nearby Fornax cluster…

宇宙学与河外天体物理 · 物理学 2015-05-14 Y. Schuberth , T. Richtler , M. Hilker , B. Dirsch , L. P. Bassino , A. J. Romanowsky , L. Infante

We investigate the outer halo globular cluster population of NGC 1399. This study uses wide-field imaging of this cluster system, which covers the largest area studied with CCD photometry until now. The cluster system of NGC 1399 is found…

天体物理学 · 物理学 2007-05-23 B. Dirsch , D. Geisler , T. Richtler , J. C. Forte

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…

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…

天体物理学 · 物理学 2009-11-10 Paul Martini , Luis C. Ho

We present a comprehensive high spatial-resolution imaging study of globular clusters (GCs) in NGC1399, the central giant elliptical cD galaxy in the Fornax galaxy cluster, conducted with HST/ACS. Using a novel technique to construct…

We acquired radial velocities of a significant number of globular clusters (GCs) on wide fields between galaxies in the nearby Fornax cluster of galaxies, in order to derive their velocity dispersion radial profile and to probe the dynamics…

天体物理学 · 物理学 2020-05-06 G. Bergond , E. Athanassoula , S. Leon , C. Balkowski , V. Cayatte , L. Chemin , R. Guzman , G. Meylan , Ph. Prugniel

The merger remnant NGC 1316 (Fornax A) is one of the most important objects regarding the investigation of merger-related processes. We use kinematical data of globular clusters (GCs) and the diffuse stellar light to investigate the global…

星系天体物理 · 物理学 2014-09-17 Tom Richtler , Michael Hilker , Brijesh Kumar , Lilia P. Bassino , Matias Gomez , Boris Dirsch

A total of 597 radial-velocity observations for 112 stars in the ~1.6 Gyr old open cluster NGC 7789 have been obtained since 1979 with the radial velocity spectrometer at the Dominion Astrophysical Observatory. The mean cluster radial…

天体物理学 · 物理学 2009-10-30 Munhwan Gim , James E. Hesser , Robert D. McClure , Peter B. Stetson

We have obtained deep photometry of NGC 1199 (in HCG 22) and NGC 6868 (in the Telescopium group). Both galaxies are the optically brightest galaxies of their groups. Our analysis of B and R images taken with the Keck II and the VLT/ESO…

天体物理学 · 物理学 2009-11-06 C. Da Rocha , C. Mendes de Oliveira , M. Bolte , B. L. Ziegler , T. H. Puzia

We present a Washington C and Kron-Cousins R photometric study of the globular cluster system of NGC 1399, the central galaxy of the Fornax cluster. A large areal coverage of 1 square degree around NGC 1399 is achieved with three adjoining…

天体物理学 · 物理学 2009-11-11 L. P. Bassino , F. R. Faifer , J. C. Forte , B. Dirsch , T. Richtler , D. Geisler , Y. Schuberth

We investigate whether the globular clusters (GCs) in the recently published sample of GCs in the Fornax cluster by Bergond and coworkers are indeed intra-cluster objects. We combine the catalogue of radial velocity measurements by Bergond…

天体物理学 · 物理学 2009-11-13 Y. Schuberth , T. Richtler , L. Bassino , M. Hilker

The Fornax cluster galaxies NGC 1399 and NGC 1404 are ideal for studying the effects of a cluster environment on globular cluster systems. Here we present new optical imaging of these two galaxies from both the Hubble Space Telescope's Wide…

天体物理学 · 物理学 2009-10-30 Duncan Forbes , Carl Grillmair , Gerard Williger , R. Elson , Jean Brodie

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…

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