2010ApJ...712.1191T


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.23CET21:46:36

2010ApJ...712.1191T - Astrophys. J., 712, 1191-1208 (2010/April-1)

Chemodynamics of compact stellar systems in NGC 5128: how similar are globular clusters, ultra-compact dwarfs, and dwarf galaxies?

TAYLOR M.A., PUZIA T.H., HARRIS G.L., HARRIS W.E., KISSLER-PATIG M. and HILKER M.

Abstract (from CDS):

Velocity dispersion measurements are presented for several of the most luminous globular clusters (GCs) in NGC 5128 (Centaurus A) derived from high-resolution spectra obtained with the UVES echelle spectrograph on the 8.2 m ESO/Very Large Telescope. The measurements are made utilizing a penalized pixel-fitting method that parametrically recovers line-of-sight velocity dispersions. Combining the measured velocity dispersions with surface photometry and structural parameter data from the Hubble Space Telescope enables both dynamical masses and mass-to-light ratios to be derived. The properties of these massive stellar systems are similar to those of both massive GCs contained within the Local Group and nuclear star clusters and ultra-compact dwarf galaxies (UCDs). The fundamental plane relations of these clusters are investigated in order to fill the apparent gap between the relations of Local Group GCs and more massive early-type galaxies. It is found that the properties of these massive stellar systems match those of nuclear clusters in dwarf elliptical galaxies and UCDs better than those of Local Group GCs, and that all objects share similarly old (≳8 Gyr) ages, suggesting a possible link between the formation and evolution of nuclear star clusters in dwarf elliptical galaxies (dE,Ns), UCDs, and massive GCs. We find a very steep correlation between dynamical mass-to-light ratio and dynamical mass of the form Υ_V^dyn¡∝¡M_dyn^0.24±0.02 above {M_dyn¡~¡2×10^6} M. Formation scenarios are investigated with a chemical abundance analysis using absorption-line strengths calibrated to the Lick/IDS index system. The results lend support to two scenarios contained within a single general formation scheme. Old, massive, super-solar [α/Fe] systems are formed on short (≲100 Myr) timescales through the merging of single-collapse GCs which themselves are formed within single, giant molecular clouds. More intermediate- and old-aged (∼3-10 Gyr), solar- to sub-solar [α/Fe] systems are formed on much longer (∼Gyr) timescales through the stripping of dE,Ns in the 1013-1015 M potential wells of massive galaxies and galaxy clusters.

Abstract Copyright:

Journal keyword(s): galaxies: evolution - galaxies: formation - galaxies: individual: NGC 5128 - galaxies: star clusters: general - galaxies: stellar content - globular clusters: general

Simbad objects: 79

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Number of rows : 79

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 225033 * 00 02 43.1106019333 -57 38 01.203489520   9.42 8.40     G8III 8 0
2 HD 225251 * 00 04 38.2651401528 -51 34 59.991881493   8.40 7.14     K1III 5 0
3 HD 225220 ** 00 04 40.07848 +34 15 54.4406           K0 46 0
4 HD 85 ** 00 05 44.4457 +17 50 25.046           F5V+F5V 30 1
5 HD 369 * 00 08 00.3533899969 -78 35 55.449650521   7.32 7.17     A3V 11 0
6 HD 232115 * 00 09 11.3477213606 +50 49 44.801941075   10.81 9.07     K7 2 0
7 HD 587 * 00 10 18.8716262158 -05 14 54.917932457   6.828 5.844     K0III 41 0
8 HD 791 ** 00 12 05.25879 -58 31 30.6014   8.38 7.63     G5IV/V 12 0
9 V* LN Peg RS* 00 12 30.3019837939 +14 33 48.861061306   9.40   8.0   G8V+K5V 93 0
10 HD 801 * 00 12 33.6265634049 +44 35 26.676550824   8.95 7.42     K0 7 0
11 HD 809 * 00 12 45.2354590782 +57 13 39.158795214   8.98 7.33     K2 7 0
12 HD 818 PM* 00 12 48.0425015248 +46 05 43.452777812   7.01 6.62     F2 23 0
13 HD 877 * 00 13 03.9134483837 -22 28 12.552237698   7.62 6.66     G8/K0III 13 0
14 HD 899 PM* 00 13 18.3179419687 -20 37 07.327180992   7.91 7.46     F5IV/V 20 1
15 V* AD Cet LP? 00 14 27.6290894 -07 46 49.898505 8.55 6.74 5.12     M3+III 74 0
16 HD 1250 * 00 16 32.3637349182 -55 28 10.357780722   8.76 7.81     G8III 9 0
17 HD 1255 V* 00 16 45.6783523842 +10 14 41.204507389   8.30 6.49     M0 24 0
18 HD 1271 PM* 00 16 47.2674994897 -46 34 26.811084151   8.46 8.01     F5V 20 0
19 V* PW And RS* 00 18 20.8896176716 +30 57 22.127515298   9.78 8.86 8.3 7.78 K2V 106 1
20 HD 1429 * 00 18 30.59355 +26 08 25.0616   7.86 7.71     A2 15 1
21 HD 1461 PM* 00 18 41.8673684261 -08 03 10.805762856   7.14 6.46     G3VFe0.5 312 1
22 HD 1472 * 00 18 47.5342870023 -10 56 57.862059276   8.69 8.15     F7V 19 0
23 HD 1567 * 00 19 50.8746961696 -02 28 43.990789065   7.81 6.96     G8IV 6 0
24 NAME Mayall II GlC 00 32 46.53 +39 34 40.5   14.564 13.807 13.208 12.684 ~ 367 1
25 M 32 IG 00 42 41.825 +40 51 54.61 9.51 9.03 8.08     ~ 1986 2
26 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10708 1
27 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9230 1
28 ACO S 373 ClG 03 38 30 -35 27.3           ~ 1509 0
29 HD 33771 PM* 05 10 49.6205885556 -37 49 03.116571464   10.19 9.41     G6/8w(F) 36 0
30 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14544 1
31 NGC 2157 Cl* 05 57 35.430 -69 11 48.67   10.35 10.16     ~ 118 0
32 HD 66141 PM* 08 02 15.9365899 +02 20 04.452198 6.91 5.63 4.38 3.39 2.72 K2IIIbFe-0.5: 169 1
33 * alf Hya * 09 27 35.24270 -08 39 30.9583 5.14 3.42 1.97 0.93 0.16 K3IIIa 404 0
34 HD 93529 Pe* 10 47 29.0134113275 -25 26 14.583999059   10.08 9.31 8.92   G6/8w 56 0
35 HD 103295 PM* 11 53 37.0223422254 -28 38 13.021084052   10.34 9.56     G5/6III 41 0
36 HD 105138 * 12 06 19.9249585665 -68 39 05.059442649   7.453 6.226     G3Ib 20 0
37 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5723 0
38 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6104 3
39 [VHH81] 1 GlC 13 23 44.190 -43 11 11.80   18.26 20.0 17.42   ~ 11 0
40 [VHH81] 41 GlC 13 24 38.9641409423 -43 20 06.480439303 20.20 19.59 18.59 17.94 17.32 ~ 13 0
41 [VHH81] 29 GlC 13 24 40.3751454941 -43 18 05.333414131 19.77 19.15 18.15 17.54 16.89 ~ 18 0
42 [VHH81] 11 GlC 13 24 54.7051627040 -43 01 21.762822596 19.55 18.96 17.91 17.26 16.61 ~ 19 0
43 [HGH92] G 12 GlC 13 25 05.720 -43 10 30.70   18.82 17.74 17.74   ~ 21 0
44 [R2001b] f2.GC-61 GlC 13 25 12.8699131968 -43 07 59.240462217 19.65 19.15 18.20 17.60 17.03 ~ 19 0
45 [HCH99] 2 GlC 13 25 16.690 -43 02 08.70 19.27 18.87 17.93 17.37 16.76 ~ 19 0
46 NAME Centaurus A Sy2 13 25 27.61509104 -43 01 08.8056025   8.18 6.84 6.66   ~ 3937 3
47 [HCH99] 15 GlC 13 25 29.800 -43 00 07.00 19.27 18.87 17.93 17.37 16.76 ~ 17 0
48 [KKF2001] J132530.29-425934.64 GlC 13 25 30.290 -42 59 34.80   19.71 20.0 18.45   ~ 22 0
49 [R2001b] f2.GC-26 GlC 13 25 30.350 -43 11 48.40 20.11 19.56 18.56 17.94 17.35 ~ 18 0
50 [KKF2001] J132531.61-430003.06 GlC 13 25 31.600 -43 00 02.80 21.06 20.99 19.93 19.20 18.43 ~ 26 0
51 [VHH81] 44 GlC 13 25 31.7329260782 -43 19 22.735785588 19.76 19.50 18.69 18.14 17.66 ~ 17 0
52 [R2001b] f2.GC-23 GlC 13 25 32.7820579360 -43 07 02.342413246 20.08 19.67 18.77 18.23 17.64 ~ 19 0
53 [VHH81] 153 GlC 13 25 34.650 -43 03 27.70     20.0 18.41   ~ 20 0
54 [VHH81] 17 GlC 13 25 39.7186771706 -42 55 59.137420988 18.82 18.51 17.63 17.10 16.57 ~ 19 0
55 [KKF2001] J132552.79-430546.36 GlC 13 25 52.730 -43 05 46.40 19.16 18.76 17.87 17.32 16.77 ~ 25 0
56 [VHH81] 22 GlC 13 25 53.680 -42 59 04.30 19.39 19.06 18.15 17.62 17.07 ~ 17 0
57 [KKF2001] J132554.59-425925.26 GlC 13 25 54.700 -42 59 22.30 18.92 18.29 17.22 16.62 15.95 ~ 28 0
58 [KKF2001] 220 GlC 13 26 05.440 -42 56 32.60 18.38 18.03 17.17 16.65 16.23 ~ 24 0
59 [HGH92] G 36 GlC 13 26 07.730 -42 52 00.30 19.42 19.19 18.35 17.81 17.33 ~ 24 0
60 [KKF2001] J132610.58-425342.78 GlC 13 26 10.580 -42 53 43.00 19.86 19.38 18.43 17.87 17.26 ~ 29 0
61 [R2001b] f1.GC-22 GlC 13 26 15.950 -42 55 00.50 19.02 18.78 18.02 17.58 17.14 ~ 8 0
62 [R2001b] f1.GC-23 GlC 13 26 23.7645637921 -42 54 01.053480688 19.67 19.30 18.41 17.87 17.32 ~ 16 0
63 NGC 5139 GlC 13 26 47.28 -47 28 46.1   6.12 5.33     ~ 2954 0
64 HD 123377 * 14 10 30.9003503808 -70 18 19.659315906   7.783 6.040     K4II 11 0
65 HD 128713 * 14 40 32.7590183810 -56 26 26.751448848   7.470 6.296     K0/1II 17 0
66 HD 131425 * 15 00 11.3010181168 -77 09 37.990209746   6.973 5.920     G8II 16 0
67 * kap TrA * 15 55 29.5988012097 -68 36 10.803582288   6.202 5.097     G5Ib-II 39 0
68 * del Oph PM* 16 14 20.73853 -03 41 39.5612 6.30 4.34 2.75 1.46 0.43 M0.5III 343 0
69 * alf TrA * 16 48 39.89508 -69 01 39.7626   3.36 1.92     K2III_Ba1 227 0
70 * bet Oph PM* 17 43 28.3526482 +04 34 02.295484 5.150 3.930 2.750 1.96 1.38 K2IIICN0.5 450 0
71 V* V2564 Oph LP? 18 04 40.0713993238 +03 46 44.716089845 9.53 8.59 7.30 6.24 5.43 F6/7V 241 0
72 HD 168357 * 18 20 55.1868774601 -37 29 15.525312504   7.742 6.434     K2II 10 0
73 * del Sgr * 18 20 59.6435424 -29 49 41.165919   4.069 2.668     K2.5IIIaCN0.5 160 0
74 HD 171391 PM* 18 35 02.3914557925 -10 58 37.954413962   6.027 5.119     G8II/III 122 0
75 HD 179323 * 19 13 13.6679148981 -25 54 24.437437460   7.143 5.765     K2III 29 0
76 HD 188161 * 19 56 57.6951031837 -57 55 32.308796064   8.11 6.56     K3/5Ib/III 9 0
77 HD 196983 * 20 41 50.5030903512 -33 53 16.933849835   10.25 9.08     K1III 23 0
78 * 33 Cap PM* 21 24 09.5934291805 -20 51 06.735127671   6.535 5.366     K0III 102 0
79 NAME Local Group GrG ~ ~           ~ 6802 0

    Equat.    Gal    SGal    Ecl

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2020.02.23-21:46:36

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