2009MNRAS.397...75G


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.20CET01:27:48

2009MNRAS.397...75G - Mon. Not. R. Astron. Soc., 397, 75-89 (2009/July-3)

On the origin of the scatter around the fundamental plane: correlations with stellar population parameters.

GARGIULO A., HAINES C.P., MERLUZZI P., SMITH R.J., LA BARBERA F., BUSARELLO G., LUCEY J.R., MERCURIO A. and CAPACCIOLI M.

Abstract (from CDS):

We present a Fundamental Plane (FP) analysis of 141 early-type galaxies in the Shapley supercluster at z = 0.049 based on spectroscopy from the AAOmega spectrograph at the Anglo-Australian Telescope and photometry from the WFI on the European Southern Observatory/MPI 2.2-m telescope. The key feature of the survey is its coverage of low-mass galaxies down to σ ∼ 50km/s. We obtain a best-fitting FP relation re∝ σ1.06±0.060<I>–0.82±0.02e in the R band. The shallow exponent of σ0 is a result of the extension of our sample to low velocity dispersions. Considering the subsample of σ0> 100km/s galaxies, the FP relation is re∝ σ1.35 <I>–0.81e, consistent with previous studies in the high-luminosity regime. We investigate the origin of the intrinsic FP scatter, using estimates of age, metallicity and α/Fe. We find that the FP residuals anticorrelate (>3σ) with the mean stellar age in agreement with previous work. However, a stronger (>4σ) correlation with α/Fe is also found. These correlations indicate that galaxies with effective radii smaller than those predicted by the FP have stellar populations systematically older and with α overabundances larger than average, for their σ. Including α/Fe as a fourth parameter in the FP, the total scatter decreases from 0.088 to 0.075dex and the estimated intrinsic scatter decreases from 0.068 to 0.049dex. Thus, variations in α/Fe account for ∼30 per cent of the total variance around the FP, and ∼50 per cent of the estimated intrinsic variance. This result indicates that the distribution of galaxies around the FP are tightly related to the enrichment, and hence to the time-scale of star formation. Our results appear to be consistent with the merger hypothesis for the formation of ellipticals which predicts that a significant fraction of the scatter is due to variations in the importance of dissipation in forming merger remnants of a given mass.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): galaxies: abundances - galaxies: ellipticals and lenticular, cD - galaxies: formation - galaxies: fundamental parameters - galaxies: structure

VizieR on-line data: <Available at CDS (J/MNRAS/397/75): table2.dat>

Simbad objects: 146

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Number of rows : 146

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 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4129 2
2 NAME SHAPLEY-CENTAURUS CL SCG 13 06.0 -33 04           ~ 481 0
3 LEDA 3085045 GiC 13 23 48.275 -31 49 53.25   19.06   17.24   ~ 9 0
4 LEDA 97583 GiC 13 23 55.493 -31 38 46.95   19.64   17.84   ~ 8 0
5 ACO 3556 ClG 13 24 06.2 -31 39 38           ~ 137 0
6 2MASX J13240683-3144488 GiC 13 24 06.837 -31 44 48.85   18.26   16.40   ~ 10 0
7 2MASX J13242652-3151529 GiC 13 24 26.5456685174 -31 51 53.309592885   17.52   15.67   ~ 12 0
8 2MASX J13251493-3141539 GiC 13 25 14.9579077124 -31 41 53.845132117   18.26   16.45   ~ 9 0
9 LEDA 97798 GiC 13 25 17.116 -31 43 11.62   19.04   17.29   ~ 9 0
10 2MASX J13252644-3146249 GiC 13 25 26.4367198758 -31 46 24.886845618   18.15   16.35   ~ 8 0
11 2MASX J13255838-3128380 GiC 13 25 58.4167284744 -31 28 37.807278447       16.131   ~ 5 0
12 LEDA 97991 GiC 13 26 30.124 -31 18 27.39   19.48   17.57   ~ 6 0
13 2MASX J13265599-3124468 GiC 13 26 55.9570523545 -31 24 47.187672826   17.31   15.45   ~ 17 0
14 2MASX J13265599-3125269 GiC 13 26 56.0194618293 -31 25 27.459877916   17.42   15.58   ~ 18 0
15 2MASX J13265832-3130299 GiC 13 26 58.323 -31 30 29.91   18.68   16.92   ~ 10 0
16 2MASX J13270435-3120079 GiC 13 27 04.354 -31 20 07.93   17.56   15.53   ~ 15 0
17 2MASX J13270747-3119169 GiC 13 27 07.4605576018 -31 19 17.023054043   17.91   16.00   ~ 7 0
18 LEDA 88846 GiC 13 27 09.283 -31 32 39.46   18.98   17.12   ~ 7 0
19 2MASX J13272698-3141066 GiC 13 27 27.0266863125 -31 41 06.984956305   17.61   15.67   ~ 14 0
20 LEDA 98203 GiC 13 27 27.036 -31 35 26.02   18.86   17.06   ~ 7 0
21 LEDA 98207 GiC 13 27 28.484 -31 30 51.91   19.84   18.00   ~ 6 0
22 2MASX J13272961-3123237 GiC 13 27 29.612 -31 23 23.70   15.55   13.69   ~ 31 0
23 NFP J132730.2-312431 GiC 13 27 30.211 -31 24 30.17   19.17   17.36   ~ 4 0
24 2MASX J13273164-3124407 GiC 13 27 31.6524909072 -31 24 41.041441705   17.88   16.05   ~ 9 0
25 LEDA 98220 GiC 13 27 32.222 -31 21 32.36   19.07   17.27   ~ 6 0
26 2MASX J13273310-3132577 GiC 13 27 33.109 -31 32 57.72   18.90   17.09   ~ 7 0
27 2MASX J13273351-3125267 GiC 13 27 33.5313990976 -31 25 26.550668061   18.02   16.18   ~ 17 0
28 2MASX J13273509-3115417 GiC 13 27 35.090 -31 15 41.73   16.17   14.57   ~ 18 0
29 LEDA 98239 GiC 13 27 36.796 -31 29 58.36   19.29   17.43   ~ 8 0
30 2MASX J13273765-3127487 GiC 13 27 37.650 -31 27 48.74   17.96   16.11   ~ 10 0
31 2MASX J13273786-3143107 GiC 13 27 37.870 -31 43 10.73       15.559   ~ 8 0
32 2MASX J13273803-3130407 GiC 13 27 38.0547934422 -31 30 41.170618655   18.55   16.74   ~ 8 0
33 2MASX J13273960-3130097 GiC 13 27 39.5795978328 -31 30 09.964218491   18.54   16.71   ~ 6 0
34 LEDA 98249 GiC 13 27 39.812 -31 36 07.07   18.76   17.05   ~ 7 0
35 2MASX J13274001-3056387 GiC 13 27 40.016 -30 56 38.75   16.4   14.886   ~ 9 0
36 NFP J132742.8-313035 GiC 13 27 42.834 -31 30 34.53   18.98   17.18   ~ 4 0
37 LEDA 98263 GiC 13 27 43.143 -31 48 40.93   19.66   17.86   ~ 7 0
38 2MASX J13274374-3141567 GiC 13 27 43.7214814023 -31 41 56.563123369   18.28   16.49   ~ 7 0
39 2MASX J13274445-3131417 GiC 13 27 44.4426344510 -31 31 41.415931307   17.44   15.60   ~ 11 0
40 6dFGS gJ132745.5-314751 GiC 13 27 45.476 -31 47 50.74   12.19 12.49 13.83   ~ 24 0
41 2MASX J13274662-3059237 GiC 13 27 46.6012469398 -30 59 23.935042236       15.852   ~ 5 0
42 2MASX J13274663-3127147 GiC 13 27 46.6251734504 -31 27 15.141699264   16.70   14.84   ~ 23 0
43 LEDA 98279 GiC 13 27 46.947 -31 40 12.36   19.26   17.41   ~ 6 0
44 2MASX J13274758-3138287 GiC 13 27 47.5487956762 -31 38 29.115011063   18.37   16.56   ~ 9 0
45 LEDA 98282 G 13 27 47.557 -31 30 57.23   18.85   16.95   ~ 7 0
46 2MASX J13274780-3124507 GiC 13 27 47.8111321466 -31 24 50.385947737   16.98   15.13   ~ 17 0
47 NAME NFP J132747.9-311360 GiC 13 27 47.8855446391 -31 13 59.814226003   16.4   14.809   ~ 20 0
48 2MASX J13274851-3128457 GiC 13 27 48.5277403911 -31 28 45.704390616   17.21   15.19   ~ 22 0
49 LEDA 98293 GiC 13 27 49.241 -31 37 54.39   18.86   17.11   ~ 6 0
50 LEDA 98292 GiC 13 27 49.351 -31 35 10.94   18.92   17.03   ~ 8 0
51 2MASX J13274945-3128007 GiC 13 27 49.4738120971 -31 28 00.890523230   17.82   15.97   ~ 9 0
52 LEDA 98297 GiC 13 27 50.453 -31 46 24.61       16.834   ~ 5 1
53 LEDA 98304 GiC 13 27 51.354 -31 32 40.97   18.45 17.32 16.65   ~ 9 0
54 ACO 3558 ClG 13 27 54.8 -31 29 32           ~ 403 2
55 LEDA 98382 G 13 28 06.572 -31 41 45.51   18.65   16.79   ~ 8 0
56 2MASX J13280669-3145208 G 13 28 06.6864721465 -31 45 20.689934932   18.11   16.08   ~ 8 0
57 2MASX J13281048-3123098 GiC 13 28 10.4891599864 -31 23 09.807364116   16.93   14.95   ~ 26 0
58 2MASX J13281109-3129158 GiC 13 28 11.0786115967 -31 29 15.787602306   16.83   15.43   ~ 10 0
59 LEDA 88862 GiC 13 28 11.335 -31 25 46.03   18.57   16.62   ~ 7 0
60 2MASX J13281297-3126248 GiC 13 28 12.978 -31 26 24.83   16.84   15.60   ~ 13 0
61 LEDA 98431 GiC 13 28 17.736 -31 36 18.64   19.07   17.33   ~ 7 0
62 2MASX J13281860-3131518 GiC 13 28 18.5621451544 -31 31 52.300599869   17.88   15.97   ~ 8 0
63 LEDA 98439 GiC 13 28 19.933 -31 37 22.86   19.55   17.77   ~ 7 0
64 2MASX J13282331-3145298 GiC 13 28 23.2969337534 -31 45 30.269258624   18.28   16.45   ~ 8 0
65 2MASX J13282429-3114388 GiC 13 28 24.2837430452 -31 14 38.506852283   17.28   15.50   ~ 13 0
66 2MASX J13282579-3130188 GiC 13 28 25.8356989592 -31 30 18.751484421   17.95   16.09   ~ 8 0
67 2MASX J13282642-3127598 GiC 13 28 26.4113461691 -31 28 00.225299745   17.61   15.74   ~ 10 0
68 2MASX J13282763-3148188 GiC 13 28 27.5961091655 -31 48 18.360584136   17.75   15.79   ~ 11 0
69 LEDA 88877 GiC 13 28 28.612 -31 32 04.52   17.48   15.65   ~ 11 0
70 2MASX J13283143-3103077 GiC 13 28 31.4571934712 -31 03 07.822357899       15.916   ~ 5 0
71 LEDA 98497 GiC 13 28 34.295 -31 29 00.81   18.98   17.11   ~ 6 0
72 2MASX J13283871-3120487 GiC 13 28 38.712 -31 20 48.79   16.06   14.28   ~ 30 0
73 2MASX J13284313-3138398 GiC 13 28 43.140 -31 38 39.80   16.77   15.35   ~ 15 0
74 LEDA 98530 GiC 13 28 43.140 -31 30 19.34   18.43   16.63   ~ 5 0
75 2MASX J13284434-3114138 GiC 13 28 44.3111212340 -31 14 13.992006135   16.97   15.15   ~ 13 0
76 2MASX J13284441-3113238 GiC 13 28 44.3754184033 -31 13 24.258288202   16.72   15.33   ~ 17 0
77 2MASX J13284816-3105318 GiC 13 28 48.1182745415 -31 05 31.925448281       15.287   ~ 8 0
78 2MASX J13284830-3139468 G 13 28 48.3384765772 -31 39 46.940190548   17.61   15.74   ~ 10 0
79 LEDA 98548 GiC 13 28 48.673 -31 42 05.34   19.50   17.73   ~ 6 0
80 LEDA 98566 GiC 13 28 51.607 -31 35 25.09   19.03   17.25   ~ 8 0
81 LEDA 98639 GiC 13 29 09.114 -31 43 02.34   19.18   17.35   ~ 8 0
82 LEDA 98641 GiC 13 29 09.523 -31 32 23.08   18.08   16.18   ~ 5 0
83 2MASX J13291431-3144448 GiC 13 29 14.3057551340 -31 44 45.358011918   17.38   15.45   ~ 12 0
84 2MASX J13291456-3139108 GiC 13 29 14.561 -31 39 10.81   18.27   16.46   ~ 8 0
85 2MASX J13291470-3149338 GiC 13 29 14.6925969236 -31 49 34.282438734   18.01   16.18   ~ 8 0
86 6dFGS gJ132917.0-320234 GiC 13 29 16.9924809039 -32 02 33.968245654   16.36   14.46   ~ 18 0
87 2MASX J13291949-3127148 GiC 13 29 19.4637914527 -31 27 14.487642001   17.90   15.99   ~ 10 0
88 2MASX J13292012-3116388 GiC 13 29 20.0893128115 -31 16 38.905039965   17.63   15.68   ~ 8 0
89 2MASX J13292074-3132248 GiC 13 29 20.7518145466 -31 32 24.925018449   16.48   14.45   ~ 26 0
90 2MASX J13292145-3116178 GiC 13 29 21.4293880952 -31 16 18.144330291   18.33   16.43   ~ 8 0
91 2MASX J13292270-3142238 GiC 13 29 22.705 -31 42 23.81   18.55   16.77   ~ 8 0
92 2MASX J13292325-3148318 GiC 13 29 23.2605361450 -31 48 32.164538175   18.06   16.16   ~ 7 0
93 2MASX J13292324-3124008 GiC 13 29 23.2632126037 -31 24 00.939174584   17.25   15.60   ~ 11 0
94 2MASX J13292341-3139518 GiC 13 29 23.4271732385 -31 39 51.666690324   16.6   14.678   ~ 17 0
95 LEDA 98696 GiC 13 29 23.813 -31 41 16.31   19.39   17.67   ~ 7 0
96 2MASX J13292426-3122388 GiC 13 29 24.2798124010 -31 22 39.109848330   16.91   15.04   ~ 16 0
97 LEDA 98703 GiC 13 29 26.956 -31 37 58.00   18.64   16.86   ~ 7 0
98 LEDA 98705 GiC 13 29 27.783 -31 48 31.64   18.69   16.76   ~ 7 0
99 LEDA 98712 GiC 13 29 29.778 -31 37 33.13   19.54   17.75   ~ 6 0
100 LEDA 98715 GiC 13 29 30.584 -31 47 17.06   18.71   16.87   ~ 6 0
101 2MASX J13293071-3148027 GiC 13 29 30.7061583621 -31 48 02.958377500   18.12   16.30   ~ 6 0
102 2MASX J13294834-3115580 GiC 13 29 48.2939045284 -31 15 58.579542201   16.3   14.539   ~ 17 0
103 2MASX J13295423-3201001 GiC 13 29 54.1764032303 -32 00 59.594256944   17.13   15.32   ~ 7 0
104 2MASX J13295675-3143281 G 13 29 56.7743705807 -31 43 27.585844256       15.900   ~ 6 0
105 2MASX J13300393-3105411 GiC 13 30 03.9652445705 -31 05 41.299829444       15.934   ~ 6 0
106 2MASX J13300693-3138131 G 13 30 06.9621148099 -31 38 12.931738534       16.526   ~ 7 0
107 2MASX J13301272-3207230 GiC 13 30 12.722 -32 07 23.07   17.52   16.18   ~ 6 0
108 2MASX J13302909-3136509 GiC 13 30 29.095 -31 36 50.95       15.920   ~ 7 0
109 2MASX J13303105-3140089 GiC 13 30 31.0432853929 -31 40 08.500498496       16.285   ~ 7 0
110 2MASX J13303417-3116239 GiC 13 30 34.1712760550 -31 16 23.439583244       15.739   ~ 7 0
111 2MASX J13303649-3218359 GiC 13 30 36.4905704244 -32 18 36.207575861   16.83   15.40   ~ 11 0
112 2MASX J13304053-3146109 G 13 30 40.5336149877 -31 46 10.986109352       15.574   ~ 6 0
113 2MASX J13304486-3151269 GiC 13 30 44.868 -31 51 26.90   16.6   14.929   ~ 7 0
114 2MASX J13304755-3202356 GiC 13 30 47.5791269131 -32 02 35.730418315   17.17   15.76   ~ 10 0
115 2MASX J13305316-3147406 GiC 13 30 53.1878066031 -31 47 40.728737109       15.983   ~ 5 0
116 2MASX J13305647-3136386 GiC 13 30 56.4409676215 -31 36 38.654456267       16.012   ~ 7 0
117 2MASX J13310195-3143466 GiC 13 31 01.9324900613 -31 43 46.966726951   16.41   15.12   ~ 15 0
118 2MASX J13310689-3145476 GiC 13 31 06.9148985699 -31 45 47.922729150       15.821   ~ 8 0
119 2MASX J13310890-3121146 GiC 13 31 08.9073714349 -31 21 14.386083762       16.469   ~ 4 0
120 2MASX J13313757-3133061 GiC 13 31 37.5764895326 -31 33 05.849897664   16.14   14.97   ~ 15 0
121 2MASX J13314031-3145471 GiC 13 31 40.3483767857 -31 45 47.139426844   16.85   15.47   ~ 7 0
122 2MASX J13314773-3125381 GiC 13 31 47.7659614804 -31 25 38.513002927   16.57   15.11   ~ 9 0
123 NFP J133222.5-314832 GiC 13 32 22.471 -31 48 31.30   18.79   17.01   ~ 4 0
124 2MASX J13322887-3136514 GiC 13 32 28.8814007028 -31 36 51.868195952   17.71   15.82   ~ 10 0
125 LEDA 99279 GiC 13 32 29.905 -31 28 05.81   18.92   17.09   ~ 5 0
126 2MASX J13323061-3129544 GiC 13 32 30.6095691158 -31 29 54.451765071   17.16   15.12   ~ 7 0
127 2MASX J13323239-3141245 GiC 13 32 32.3663685943 -31 41 24.117133993   18.70   16.91   ~ 5 0
128 2MASX J13323301-3142145 GiC 13 32 32.9938306267 -31 42 14.841414112   17.78   15.87   ~ 8 0
129 LEDA 99344 GiC 13 32 54.635 -31 38 09.02   19.40   17.65   ~ 5 0
130 LEDA 99359 GiC 13 33 01.685 -31 37 46.00   19.36   17.61   ~ 5 0
131 LEDA 99374 GiC 13 33 08.485 -31 29 38.33   18.45   16.60   ~ 7 0
132 2MASX J13330955-3136119 GiC 13 33 09.5461301844 -31 36 12.191151096   17.68   15.96   ~ 13 0
133 2MASX J13331144-3132109 GiC 13 33 11.444 -31 32 10.92   18.48   16.64   ~ 6 0
134 2MASX J13331174-3140089 GiC 13 33 11.7164652925 -31 40 09.304172855   17.11   15.22   ~ 15 0
135 2MASX J13331894-3149139 GiC 13 33 18.948 -31 49 13.94   18.63   16.80   ~ 6 0
136 LEDA 99408 GiC 13 33 20.851 -31 48 32.59   18.82   16.96   ~ 5 0
137 LEDA 99423 GiC 13 33 26.715 -31 36 54.59       17.509   ~ 4 1
138 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 280 1
139 LEDA 99442 GiC 13 33 32.919 -31 31 17.93   19.15   17.20   ~ 6 0
140 2MASX J13335165-3147552 GiC 13 33 51.6503884236 -31 47 55.123275668   18.23   16.45   ~ 5 0
141 2MASX J13335659-3140122 GiC 13 33 56.5988629914 -31 40 12.447933628   18.22   16.41   ~ 6 0
142 LEDA 99552 GiC 13 34 08.135 -31 47 34.41   18.82   16.81   ~ 8 0
143 2MASX J13340952-3142383 GiC 13 34 09.525 -31 42 38.39   18.49   16.53   ~ 6 0
144 2MASX J13343044-3136494 GiC 13 34 30.4767970616 -31 36 49.347784381   17.74   15.81   ~ 6 0
145 NFP J133434.7-313001 GiC 13 34 34.647 -31 30 00.46   19.00   17.26   ~ 3 0
146 2MASX J13345012-3144476 GiC 13 34 50.1229148639 -31 44 47.639962236   16.61   15.31   ~ 13 0

    Equat.    Gal    SGal    Ecl

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2020.01.20-01:27:48

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