SIMBAD references

2007A&A...464L..21B - Astronomy and Astrophysics, volume 464, L21-24 (2007/3-3)

Globular clusters and dwarf galaxies in Fornax. I. Kinematics in the cluster core from multi-object spectroscopy.

BERGOND G., ATHANASSOULA E., LEON S., BALKOWSKI C., CAYATTE V., CHEMIN L., GUZMAN R., MEYLAN G. and PRUGNIEL P.

Abstract (from CDS):

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 of the cluster. We used FLAMES on the VLT to obtain accurate velocities for 149 GCs, within a ≃500x150kpc strip centered on NGC 1399, the Fornax central galaxy. These objects are at the very bright tail (MV≲-9.5) of the GC luminosity function, overlapping the so-called ``ultra-compact dwarfs'' magnitude range. Eight of the brightest FLAMES-confirmed members indeed show hints of resolution in the subarcsecond pre-imaging data we used for selecting the ∼500 targets for FLAMES spectroscopy. Ignoring the GCs around galaxies by applying 3d25 diameter masks, we find 61 GCs of 20.0≤V≤22.2 lying in the intra-cluster (IC) medium. The velocity dispersion of the population of ICGCs is 200km/s at ∼150kpc from the central NGC 1399 and rises to nearly 400km/s at 200kpc, a value which compares with the velocity dispersion of the population of dwarf galaxies, thought to be infalling from the surroundings of the cluster.

Abstract Copyright:

Journal keyword(s): galaxies: star clusters - galaxies: kinematics and dynamics - galaxies: elliptical and lenticular, cD - galaxies: dwarf - galaxies: individual: Fornax cluster

VizieR on-line data: <Available at CDS (J/A+A/464/L21): table1.dat table2.dat table3.dat>

Nomenclature: Table 1: [BAL2007] gcNNN.NNNa, [BAL2007] gcNNNNww, N=149. Table 2: [BAL2007] ucNNN.NN, N=6, [BAL2007] ucdA (Nos A-B). Table 3: [BAL2007] newdwN (Nos 1-4).

CDS comments: In table 1 there are 2 objects designated as gc172.2, so we have added in the format a letter a and b to differentiate them.

Simbad objects: 184

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2020.08.11-22:11:53

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