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相关论文: Compact Stellar Systems around NGC 1399

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The properties of globular cluster systems (GCSs) in the core of the nearby galaxy clusters Fornax and Hydra I are presented. In the Fornax cluster we have gathered the largest radial velocity sample of a GCS system so far, which enables us…

星系天体物理 · 物理学 2015-12-24 Michael Hilker , Tom Richtler

(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

Ultra-compact dwarf galaxies (UCDs) share many properties with globular clusters (GCs) and are found in similar environments. A large sample of UCDs and GCs around NGC 1399, the central giant elliptical of the Fornax galaxy cluster, is used…

星系天体物理 · 物理学 2016-10-26 C. Schulz , M. Hilker , P. Kroupa , J. Pflamm-Altenburg

We studied the properties of the globular cluster systems of five early--type galaxies in the Fornax galaxy cluster: NGC 1374, NGC 1379, NGC 1387, NGC 1427, and the central giant elliptical NGC 1399. From the investigation of their number…

天体物理学 · 物理学 2007-05-23 M. Kissler-Patig , S. Kohle , M. Hilker , T. Richtler , L. Infante , H. Quintana

We present a photometric catalog (based on V and I photometry) of galaxies in the central regions of the Fornax galaxy cluster. Our 11 CCD fields cover 0.17 degrees in total. The limiting surface brightness is around 24 mag arsec^-2,…

天体物理学 · 物理学 2009-10-30 M. Hilker , M. Kissler-Patig , T. Richtler , L. Infante , H. Quintana

We examine the luminosity and B-I color distribution of globular clusters for three early-type galaxies in the Fornax cluster using imaging data from the Wide Field/Planetary Camera 2 on the Hubble Space Telescope. The luminosity functions…

天体物理学 · 物理学 2009-10-30 Carl J. Grillmair , Duncan A. Forbes , Jean P. Brodie , Rebecca Elson

We present the first results of a deep Chandra survey of the inner 1 degree of the Fornax cluster of galaxies. Ten 50 ksec pointings were obtained in a mosaic centered on the giant elliptical galaxy NGC 1399 at the nominal cluster center.…

天体物理学 · 物理学 2009-11-10 C. A. Scharf , D. R. Zurek , M. Bureau

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…

天体物理学 · 物理学 2009-11-07 Steffen Mieske , Michael Hilker , Leopoldo Infante

We present BVI photometry of 190 galaxies in the central region of the Fornax Cluster observed with the Michigan Curtis Schmidt Telescope. The cluster members exhibit a strong surface brightness-magnitude relation in our data: both giant…

天体物理学 · 物理学 2009-11-07 A. M. Karick , M. J. Drinkwater , M. D. Gregg

We present the results of a search for globular clusters in the surroundings of 15 low surface brightness dwarf galaxies belonging to the Fornax Cluster, which was carried out on CCD images obtained with the C and T1 filters of the…

天体物理学 · 物理学 2009-11-07 L. P. Bassino , S. A. Cellone , J. C. Forte , B. Dirsch

We present the preliminary results of a deep (167 ks) ROSAT HRI observation of the cD galaxy NGC1399 in the Fornax cluster. We find, in agreement with previous observations, an extended (41 Kpc adopting a distance of 19 Mpc) gaseous halo…

天体物理学 · 物理学 2007-05-23 M. Paolillo , G. Fabbiano , G. Peres , D. -W. Kim

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 the discovery of a complex extended density enhancement in the Globular Clusters (GCs) in the central $\sim 0.5(^{\circ})^2$ ($\sim 0.06$ Mpc$^2$) of the Fornax cluster, corresponding to $\sim 50\%$ of the area within 1 core…

[Abrigded] We have started a new deep, multi-imaging survey of the Fornax cluster, dubbed Fornax Deep Survey (FDS), at the VLT Survey Telescope. In this paper we present the deep photometry inside two square degrees around the bright galaxy…

We present a novel approach to constrain the formation channels of Ultra-Compact Dwarf Galaxies (UCDs). This inhomogeneous class of objects of remnants of tidally stripped dwarf elliptical galaxies and high mass globular clusters. We use…

星系天体物理 · 物理学 2016-02-03 Karina Voggel , Michael Hilker , Tom Richtler

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

Radial velocities of 94 galaxies brighter than about V_tot = 20 mag in the direction of the central Fornax cluster have been measured. Except for 8 Fornax members, all galaxies lie in the background. Among the 8 members, there are 5…

天体物理学 · 物理学 2009-10-30 M. Hilker , L. Infante , G. Vieria , M. Kissler-Patig , T. Richtler

We present the largest sample ($\sim$13,000 candidates, $\sim$3000 of wich are bona-fide candidates) of globular cluster (GCs) candidates reported in the Fornax Cluster so far. The survey is centered on the NGC 1399 galaxy, extending out to…

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…

Ultra-compact dwarf galaxies (UCDs) are a new type of galaxy we have discovered in the central region of the Fornax and Virgo clusters. Unresolved in ground-based imaging, UCDs have spectra typical of old stellar systems. Ninety-two have…

天体物理学 · 物理学 2007-05-23 A. M. Karick , M. D. Gregg , M. J. Drinkwater , M. Hilker , P. Firth