2004MNRAS.350.1067F

Query : 2004MNRAS.350.1067F

2004MNRAS.350.1067F - Mon. Not. R. Astron. Soc., 350, 1067-1078 (2004/May-3)

Principal component analysis of International Ultraviolet Explorer galaxy spectra.

FORMIGGINI L. and BROSCH N.

Abstract (from CDS):

We analyse the UV spectral energy distribution of a sample of normal galaxies listed in the International Ultraviolet Explorer (IUE) Newly Extracted Spectra (INES) Guide No. 2 - Normal Galaxies using a principal component analysis. The sample consists of the IUE short-wavelength (SW) spectra of the central regions of 118 galaxies, where the IUE aperture included more than 1 per cent of the galaxy size. The principal components are associated with the main components observed in the ultraviolet (UV) spectra of galaxies. The first component, accounting for the largest source of diversity, may be associated with the UV continuum emission. The second component represents the UV contribution of an underlying evolved stellar population. The third component is sensitive to the amount of activity in the central regions of galaxies and measures the strength of star-formation events.

In all the samples analysed here, the principal component representative of star-forming activity accounts for a significant percentage of the variance. The fractional contribution to the spectral energy distribution (SED) by the evolved stars and by the young population are similar.

Projecting the SEDs on to their eigenspectra, we find that none of the coefficients of the principal components can outline an internal correlation or can correlate with the optical morphological types. In a subsample of 43 galaxies, consisting of almost only compact and BCD galaxies, the third principal component defines a sequence related to the degree of starburst activity of the galaxy.


Abstract Copyright: 2004 RAS

Journal keyword(s): methods: data analysis - galaxies: fundamental parameters - galaxies: stellar content - ultraviolet: galaxies

CDS comments: Table 1: numerous misprint in object ID, PKS 0123-16 not identified.

Simbad objects: 115

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Number of rows : 115
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 7828 AG? 00 06 27.082 -13 24 58.07   14       ~ 55 0
2 NGC 118 Sy2 00 27 16.2247090937 -01 46 48.519491282   14.9       ~ 43 0
3 ESO 350-38 Sy2 00 36 52.489 -33 33 17.23   14.31 14.41 13.49   ~ 450 0
4 ACO 85 ClG 00 41 36.21 -09 19 30.4           ~ 974 0
5 ESO 474-26 Sy2 00 47 07.5377265072 -24 22 14.800438812   14.51 15.7 13.54   ~ 58 0
6 IC 1586 bCG 00 47 56.301 +22 22 22.51   15.0       ~ 77 0
7 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
8 Z 522-58 GiC 01 54 53.807 +36 55 04.64   14.2   13.05   ~ 148 1
9 NGC 835 Sy2 02 09 24.606 -10 08 09.31   13.29 12.45 12.24   ~ 226 1
10 IC 214 AGN 02 14 05.53344 +05 10 23.8692   14.4       ~ 157 0
11 NGC 992 AGN 02 37 25.491 +21 06 03.04   13.5       ~ 144 1
12 Z 415-15 AG? 02 51 04.57 +04 27 13.9 14.76 15.07 14.70 14.50 14.29 ~ 127 0
13 NAME 3C 75A rG 02 57 41.5615453872 +06 01 36.883348716   14.7       ~ 65 2
14 SBSG 0335-052 AGN 03 37 44.06 -05 02 40.2     16.65     ~ 500 1
15 ESO 156-7 G 03 41 11.603 -54 00 34.69   15.76   15.07   ~ 9 0
16 NGC 1510 GiP 04 03 32.640 -43 24 00.58 14.23 13.63 13.24 13.09   ~ 201 1
17 SCHG 0420-414 H2G 04 21 58.4 -41 19 35           ~ 4 0
18 2MASX J04420810-3801108 H2G 04 42 08.110 -38 01 10.88 15.66 17.21 15.80 16.00   ~ 54 0
19 Z 395-12 bCG 05 10 48.1123757064 -02 40 53.685168744   14.0 14.4     ~ 91 1
20 SCHG 0513-393 H2G 05 15 19.7789 -39 17 41.149           ~ 20 0
21 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
22 ESO 34-11 GiG 06 43 06.0683597256 -74 14 10.632037308 14.01 13.60 12.94 12.34   ~ 76 2
23 SCHG 0645-376 H2G 06 46 50.1370 -37 43 21.644     16.84     ~ 26 0
24 Z 330-37 bCG 07 28 11.459 +72 34 23.18   13.9 14.15     ~ 81 0
25 IC 2184 PaG 07 29 27.015 +72 07 51.48   14.00       ~ 95 1
26 NGC 2415 bCG 07 36 56.6678012232 +35 14 30.555503124   12.5       ~ 134 1
27 Z 331-16 GiG 07 50 49.9404754872 +74 21 27.353103552   12.7       ~ 75 1
28 2MASX J08382309+6507160 SBG 08 38 23.093 +65 07 16.05     14.16     ~ 141 2
29 NGC 2623 LIN 08 38 24.016 +25 45 16.29 14.10 13.99 13.36     ~ 533 2
30 LEDA 3090963 H2G 08 42 20.941 +11 50 00.39           ~ 42 0
31 Z 90-3 H2G 08 45 33.662 +16 05 46.88   15.7       ~ 36 0
32 NGC 2684 GiG 08 54 54.0449415936 +49 09 37.459659996   13.4       ~ 54 0
33 NGC 2773 G 09 09 44.16147 +07 10 25.5760   14.5       ~ 47 1
34 NGC 2820A H2G 09 21 30.1318400448 +64 14 19.768079076   14.9       ~ 84 0
35 Mrk 116 AGN 09 34 02.1 +55 14 25           ~ 1179 1
36 ESO 435-20 rG 09 59 21.226 -28 08 00.04   14.42 14.08 13.33   ~ 84 2
37 NGC 3077 GiP 10 03 19.0965510921 +68 44 01.556166166 11.23 10.85 10.14 9.74   ~ 808 0
38 Z 289-28 AGN 10 03 51.9487763664 +59 26 10.665521556   14.96 14.42     ~ 146 0
39 NGC 3125 AGN 10 06 33.318 -29 56 07.32 13.03 13.45 13.00 12.50 13.4 ~ 253 2
40 Z 290-12 G 10 11 51.4994549064 +58 53 23.933986224   15.7       ~ 25 0
41 Z 266-55 AGN 10 32 31.956 +54 24 03.53 13.29 13.66 13.13 12.71 12.27 ~ 381 1
42 NGC 3353 AGN 10 45 22.390 +55 57 37.36 12.90 13.25 12.79     ~ 378 1
43 Z 267-15 AGN 10 49 05.0478242832 +52 20 07.788652296   14.6       ~ 94 0
44 Z 38-42 bCG 10 53 03.845 +04 37 54.24   14.1       ~ 83 0
45 ACO 1126 ClG 10 53 55.71 +16 51 42.4           ~ 96 0
46 NGC 3471 H2G 10 59 09.016 +61 31 49.63   13.0       ~ 133 1
47 APG 148 IG 11 03 53.89153 +40 50 59.8850   14.29       ~ 190 1
48 MCG+05-26-046 SBG 11 04 58.298 +29 08 16.54   15.5 15.29     ~ 228 0
49 2MASX J11120810+3552442 G 11 12 08.0968693512 +35 52 43.987290024   17.5       ~ 8 0
50 Z 314-27 AGN 11 26 50.460 +64 08 15.13   14.9       ~ 49 0
51 Z 351-62 bCG 11 27 59.90 +78 59 39.0   14.50       ~ 346 1
52 Z 242-46 bCG 11 33 29.12 +49 14 17.4 14.69 14.61 14.25 14.17   ~ 242 1
53 MCG-01-30-033 Sy1 11 46 45.2245718112 -03 50 52.948488012   14.06 13.61 13.21 12.77 ~ 49 1
54 NGC 3991 EmG 11 57 30.465 +32 20 03.00   13.8       ~ 163 1
55 NGC 3994 LIN 11 57 36.8662975416 +32 16 39.447161112   13.51 12.87     ~ 207 1
56 NGC 4004A rG 11 58 05.2253666472 +27 52 43.761225324   14.0       ~ 116 1
57 MCG-03-31-006 EmG 11 58 58.114 -19 01 47.67   14.19 17.8 13.41 14.4 ~ 91 0
58 ESO 505-12 EmG 12 05 59.2873423440 -27 00 56.178859572   14.92   14.07   ~ 23 0
59 IC 3017 LIN 12 09 22.8215066592 +13 37 05.391212808           ~ 49 0
60 IC 3018 GiG 12 09 24.957 +13 34 29.06   15.3       ~ 58 0
61 2MASX J12102434+1310144 GiC 12 10 24.342 +13 10 14.49           ~ 44 0
62 IC 3028 GiG 12 10 35.7587243880 +11 45 38.948516172   14.9       ~ 73 0
63 Z 41-77 GiP 12 15 18.322 +05 45 40.28   14.9       ~ 95 0
64 LEDA 39402 AGN 12 17 17.093 -28 02 32.67   17       ~ 143 0
65 Z 42-8 H2G 12 19 09.840 +03 51 23.34   14.5       ~ 168 0
66 IC 3224 AG? 12 22 36.0781372728 +12 09 27.638744616   16       ~ 63 0
67 Z 244-18 bCG 12 26 15.69 +48 29 38.3   15.3       ~ 364 0
68 NGC 4449 EmG 12 28 11.118 +44 05 36.81 10.11 9.98 9.64 9.45   ~ 1192 1
69 UGC 7905 PaG 12 43 46.8 +54 53 59           ~ 25 1
70 Z 159-67 GiG 12 44 38.1431512800 +28 28 20.905837968   14.7       ~ 66 0
71 NGC 4650A Sy2 12 44 49.0352044176 -40 42 51.691570488   14.12 13.58 13.29 13.9 ~ 205 0
72 NGC 4670 AG? 12 45 17.150 +27 07 31.76   12.6 12.90     ~ 271 0
73 Z 71-33 GiG 12 46 04.442 +08 28 35.11   15.2       ~ 66 0
74 EC 12476-2317 AGN 12 50 18.90 -23 33 57.6   16.29 15.46     ~ 72 0
75 NGC 4774 rG 12 53 06.559 +36 49 11.35   14.6       ~ 44 1
76 Z 189-2 GiC 12 56 55.638 +32 26 51.50   15.1       ~ 90 0
77 NGC 4853 rG 12 58 35.1979266912 +27 35 46.930900632 13.96 14.68 13.00 13.24   ~ 156 1
78 [B68b] 234 AGN 13 03 03.3261280848 +35 51 28.659316104   18.38 17.52     ~ 28 0
79 LEDA 45394 EmG 13 06 42.43 -12 04 22.2           ~ 31 0
80 LEDA 45456 EmO 13 07 24.7 -13 10 42           ~ 8 0
81 Z 217-22 EmG 13 14 09.97 +39 08 43.6   15.6       ~ 20 0
82 Z 189-45 H2G 13 14 48.796 +34 52 53.18   14.9       ~ 89 0
83 NGC 5122 Sy1 13 24 14.9402501712 -10 39 15.431171292   14   13.36   ~ 53 0
84 LEDA 46982 AGN 13 25 48.66 -11 36 37.8   17.93 17.43     ~ 98 0
85 MCG+10-19-072 Sy2 13 25 53.82030 +57 15 16.0664   15.0       ~ 84 0
86 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
87 MCG-05-32-052 EmG 13 37 27.821 -33 00 24.46   14.09 14.65 13.20 13.6 ~ 56 0
88 Mrk 67 EmG 13 41 56.4808997304 +30 31 09.652262088   16.5       ~ 96 0
89 NGC 5291 Sy2 13 47 24.5000261808 -30 24 25.449445800   15.18 14.00 13.57 12.7 ~ 161 1
90 ACO 1795 ClG 13 48 47.4 +26 34 55           ~ 1330 0
91 Z 132-70 AGN 14 01 09.2734881048 +21 14 16.465555176   15.1       ~ 26 0
92 LEDA 50039 G 14 02 58.4 -30 14 15   18       ~ 12 0
93 IC 4448 AG? 14 40 27.9152041656 -78 48 33.656053896   13.90 13.99 12.69   ~ 28 0
94 Z 337-21 G 14 50 47.1000207384 +73 49 20.159878116   15.4       ~ 20 0
95 Z 193-4 H2G 14 50 56.495 +35 34 18.27   14.5 14.83     ~ 212 0
96 ACO 1991 ClG 14 54 41.53 +18 38 08.4           ~ 349 1
97 NVSS J151212+471642 rG 15 12 12.85281 +47 16 30.7361   16.98 16.46     ~ 30 0
98 Z 274-49 bCG 15 37 04.237 +55 15 47.60   15.2       ~ 136 0
99 UGC 10033 IG 15 46 56.1 +17 52 42           ~ 118 0
100 NGC 5996 H2G 15 46 58.8879549840 +17 53 03.045863148   13.2       ~ 165 0
101 NGC 6090 PaG 16 11 40.3 +52 27 21   14.0       ~ 446 1
102 Z 251-43 bCG 16 48 24.1208837112 +48 42 32.756012676   14.6       ~ 48 0
103 IC 4686 AG? 18 13 38.7810951072 -57 43 57.306382932   14.67   13.52   ~ 71 1
104 ESO 338-4 EmG 19 27 58.338 -41 34 30.81   13.55 13.21 13.14 13.43 ~ 253 1
105 ESO 185-13 AGN 19 45 00.4907671728 -54 15 02.617201080 14.77 14.94 14.68 14.49 14.19 ~ 55 0
106 ESO 462-20 IG 20 26 56.763 -29 07 07.74 14.31 14.47 14.18 14.33 15.1 ~ 14 0
107 NGC 7173 GiP 22 02 03.1741852512 -31 58 25.338407412   12.10   10.59   ~ 142 0
108 NGC 7176 GiP 22 02 08.4333223632 -31 59 23.446700592   12.08   10.59   ~ 131 0
109 NGC 7250 AG? 22 18 17.776 +40 33 44.66 13.18 13.22 12.58     ~ 126 1
110 MCG-07-47-023 rG 23 13 58.6501915464 -42 43 39.089945856   14.68 14.6 14.537   ~ 56 3
111 ACO 2597 ClG 23 25 19.70 -12 07 27.7           ~ 572 0
112 NGC 7673 EmG 23 27 41.060 +23 35 20.18 12.84 13.17 12.76     ~ 282 2
113 Z 476-55 EmG 23 30 09.7 +25 31 56   15.0       ~ 57 0
114 ACO 2626 ClG 23 36 31.0 +21 09 36           ~ 265 0
115 ACO 2634 ClG 23 38 18.4 +27 01 37           ~ 515 2

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