2004ApJ...610..233M


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.17CEST14:04:19

2004ApJ...610..233M - Astrophys. J., 610, 233-246 (2004/July-3)

A population of massive globular clusters in NGC 5128.

MARTINI P. and HO L.C.

Abstract (from CDS):

We present velocity dispersion measurements of 14 globular clusters in NGC 5128 (Centarus A) obtained with the MIKE echelle spectrograph on the 6.5 m Magellan Clay telescope. These clusters are among the most luminous globular clusters in NGC 5128 and have velocity dispersions comparable to the most massive clusters known in the Local Group, ranging from 10 to 30 km/s. We describe in detail our cross-correlation measurements, as well as simulations to quantify the uncertainties. These 14 globular clusters are the brightest NGC 5128 globular clusters with surface photometry and structural parameters measured from the Hubble Space Telescope. We have used these measurements to derive masses and mass-to-light ratios for all of these clusters and establish that the fundamental plane relations for globular clusters extend to an order-of-magnitude higher mass than in the Local Group. The mean mass-to-light ratio for the NGC 5128 clusters is ∼3±1, higher than measurements for all but the most massive Local Group clusters. These massive clusters begin to bridge the mass gap between the most massive star clusters and the lowest mass galaxies. We find that the properties of NGC 5128 globular clusters overlap quite well with the central properties of nucleated dwarf galaxies and ultracompact dwarf galaxies. As six of these clusters also show evidence for extratidal light, we hypothesize that at least some of these massive clusters are the nuclei of tidally stripped dwarfs.

Abstract Copyright:

Journal keyword(s): Galaxies: Individual: NGC Number: NGC 5128 - Galaxies: Star Clusters - Galaxy: Globular Clusters: General

Simbad objects: 31

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Number of rows : 31

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 NAME Mayall II GlC 00 32 46.53 +39 34 40.5   14.564 13.807 13.208 12.684 ~ 366 1
2 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10562 1
3 M 33 GiG 01 33 50.904 +30 39 35.79 6.17 6.27 5.72     ~ 5019 1
4 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 942 3
5 ACO S 373 ClG 03 38 30 -35 27.3           ~ 1489 0
6 * pi.02 Ori * 04 50 36.7229825 +08 54 00.649333 4.39 4.36 4.35 4.29 4.29 A1Vn 159 0
7 HD 43827 V* 06 17 41.7242496891 -16 48 57.260429627   6.421 5.148     K1III 34 0
8 HD 44951 PM* 06 24 10.3196410582 -11 31 48.324633091   6.434 5.207     K2III 60 0
9 HD 46184 PM* 06 31 23.0432122698 -12 23 31.043197068   6.425 5.153     K1III 44 0
10 * 26 Hya ** 09 19 46.3830936289 -11 58 29.457677142   5.703 4.770     G7III 67 0
11 * lam Hya SB* 10 10 35.2885811545 -12 21 14.858923765 5.53 4.61 3.61 2.84 2.36 K0IIIbCN0.5 194 0
12 * 33 Sex PM* 10 41 24.1859207379 -01 44 29.366215211   7.145 6.250     G9IV 147 0
13 * alf Crt PM* 10 59 46.4648602 -18 17 55.617244 6.14 5.16 4.07 3.27 2.72 K0IIIb 197 0
14 [PFF2004] gc 2 GlC 13 23 59.51 -43 17 29.1 20.70 20.43 19.55 19.02 18.44 ~ 9 0
15 [HGH2004] 201.10060-42.90571 GlC 13 24 24.15 -42 54 20.6 21.85 21.16 20.12 19.53 18.82 ~ 10 0
16 [PFF2004] gc 11 GlC 13 24 36.87 -43 19 16.2 20.01 19.82 19.03 18.53 18.00 ~ 12 0
17 [PFF2004] gc 17 GlC 13 24 43.6099055569 -42 58 16.406432419 20.54 20.32 19.51 18.99 18.47 ~ 8 0
18 [PFF2004] gc 21 GlC 13 24 54.1585462163 -42 54 50.461298993 20.21 20.03 19.25 18.75 18.24 ~ 12 0
19 [PFF2004] gc 22 GlC 13 24 54.3040702890 -43 03 15.448570750 20.72 20.58 19.84 19.37 18.90 ~ 10 0
20 [PFF2004] gc 23 GlC 13 24 54.5435139231 -42 48 58.592227186 20.55 20.30 19.44 18.90 18.37 ~ 13 0
21 [PFF2004] gc 25 GlC 13 24 57.53 -43 05 32.7 21.50 21.02 20.02 19.39 18.67 ~ 9 0
22 EQ J1325-4254 GlC 13 25 01.589 -42 54 40.82 19.97 19.75 19.37 19.06 18.71 ~ 15 1
23 [PFF2004] gc 31 GlC 13 25 02.7361409503 -43 11 21.371197953 20.51 20.29 19.48 18.99 18.42 ~ 13 0
24 [PFF2004] gc 32 GlC 13 25 03.2212590653 -42 57 40.565699864 20.92 20.59 19.73 19.18 18.61 ~ 10 0
25 [PFF2004] gc 37 GlC 13 25 07.4678610515 -43 12 29.534046562 21.60 21.29 20.42 19.91 19.33 ~ 8 0
26 [HGH2004] 201.29642-43.05266 GlC 13 25 11.1413289618 -43 03 09.632227666 20.57 20.32 19.51 18.99 18.48 ~ 16 0
27 [PFF2004] gc 44 GlC 13 25 13.19 -43 16 35.6 20.29 20.11 19.37 18.87 18.33 ~ 5 0
28 NAME Centaurus A Sy2 13 25 27.61509104 -43 01 08.8056025   8.18 6.84 6.66   ~ 3886 3
29 NGC 5139 GlC 13 26 47.28 -47 28 46.1   6.12 5.33     ~ 2908 0
30 NGC 7252 IG 22 20 44.7751096408 -24 40 41.905677809 12.26 12.46 12.06 11.57   ~ 655 1
31 NAME Local Group GrG ~ ~           ~ 6659 0

    Equat.    Gal    SGal    Ecl

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2019.10.17-14:04:19

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