1999ApJ...518...94I

Query : 1999ApJ...518...94I

1999ApJ...518...94I - Astrophys. J., 518, 94-102 (1999/June-2)

On the influence of the environment on the star formation rates of a sample of galaxies in nearby compact groups.

IGLESIAS-PARAMO J. and VILCHEZ J.M.

Abstract (from CDS):

We present the results of a study of the star formation rates (SFRs) of a sample of disk galaxies in nearby compact groups compared with the SFRs of a sample of field galaxies. For this purpose, Hα luminosities and equivalent widths were derived for the galaxies of our sample. A direct comparison of the equivalent widths and Hα luminosities, normalized to the B luminosities and estimated area of the galaxies of both samples, yields the result that the median values of these quantities are almost identical for both samples, although the distributions for the compact-group sample are broader around the mean value than was found in the field galaxy sample. This result can be explained by assuming that although interactions between galaxies in compact groups can alter the SFRs, the median value of the normalized SFRs is preserved, being almost indistinguishable from the corresponding value for field galaxies. Measuring the global LHα/LB of the groups, including early-type galaxies, we find that most of the groups that show the highest level of LHα/LB with respect to a set of synthetic groups built out of field galaxies show tidal features in at least one of their members. Finally, we have explored the relationship between the ratio LHα/LB and several relevant dynamical parameters of the groups: velocity dispersion, crossing time, radius, and the mass-to-luminosity ratio, finding no clear correlation. This suggests that the exact dynamical state of a group does not control the SFR of the group as a whole. Our results are compatible with a scenario for compact groups of galaxies in which the dark matter of the group is arranged in a common halo, therefore preventing a fast collapse of the galaxies.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Clusters: General - Galaxies: Interactions - Galaxies: ISM - Galaxies: Stellar Content

Simbad objects: 123

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Number of rows : 123
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 MCG+02-01-009 AG? 00 01 13.3051746288 +13 08 38.132079252   16.01   15.46   ~ 41 0
2 MCG+02-01-010 AG? 00 01 14.971 +13 06 44.65   16.97   14.67   ~ 44 0
3 NGC 7803 GiG 00 01 19.9689164664 +13 06 40.486549320   13.8   12.62   ~ 98 0
4 Z 433-14 GiG 00 01 26.032 +13 06 46.59   15.3   14.28   ~ 57 0
5 Z 409-26 GiG 00 31 18.844 +08 28 30.33   15.0   13.40   ~ 81 0
6 Z 409-28 AGN 00 31 23.840 +08 28 01.32   14.6   13.10   ~ 110 0
7 Z 409-30 GiG 00 31 29.3689510392 +08 24 02.141295480   15.4   13.97   ~ 49 0
8 NGC 157 Sy2 00 34 46.7879913696 -08 23 47.273597952   11.0   10.03 10.7 ~ 366 1
9 NGC 192 GiC 00 39 13.39127 +00 51 50.8860   13.9   11.97   ~ 145 1
10 NGC 196 GiG 00 39 17.8424526792 +00 54 45.971984899   14.2   12.40   ~ 85 0
11 NGC 197 GiP 00 39 18.7935711480 +00 53 31.087552704   14.85   13.39   ~ 61 0
12 NGC 201 EmG 00 39 34.8489575280 +00 51 35.886502080   14.7   12.41   ~ 107 0
13 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
14 NGC 278 H2G 00 52 04.3452013728 +47 33 01.675026036   10.5       ~ 244 1
15 NGC 488 GiG 01 21 46.7967133224 +05 15 24.623017524   15.0       ~ 299 0
16 M 74 G 01 36 41.7451236624 +15 47 01.107512304 10.52 10.00 9.46 9.16   ~ 1934 1
17 NGC 833 Sy2 02 09 20.8490871072 -10 07 59.003785884   14.02 13.00 12.75   ~ 207 0
18 NGC 835 Sy2 02 09 24.606 -10 08 09.31   13.29 12.45 12.24   ~ 226 1
19 NGC 838 LIN 02 09 38.562 -10 08 46.12   13.72   12.65   ~ 211 1
20 NGC 839 EmG 02 09 42.73127 -10 11 01.6370   13.98 11.42 12.70   ~ 161 1
21 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1741 2
22 NGC 925 H2G 02 27 16.913 +33 34 43.97   10.69 10.12 9.55   ~ 818 1
23 NGC 1055 EmG 02 41 45.233 +00 26 35.45 11.59 11.40 10.59 10.5 10.7 ~ 297 2
24 NGC 1084 EmG 02 45 59.926 -07 34 43.10 11.22 11.59 10.73 10.55 11.1 ~ 386 2
25 NGC 1087 H2G 02 46 25.1550134904 -00 29 55.457857644   11.5   11.4 11.5 ~ 379 0
26 NGC 1156 GiG 02 59 42.8528847264 +25 14 28.352017320 12.13 12.32 11.74     ~ 323 1
27 MCG-02-08-050 GiG 03 06 55.210 -09 37 42.90   16.66   14.54   ~ 40 0
28 NGC 1214 Sy1 03 06 55.9415492400 -09 32 38.450810976   15.13   13.45   ~ 54 0
29 NGC 1215 GiG 03 07 09.4626542856 -09 35 33.695780136   14.0   13.27 13.6 ~ 52 0
30 NGC 1216 GiG 03 07 18.3927342768 -09 36 45.561419820   16.00   13.67   ~ 52 0
31 IC 356 AG? 04 07 46.8869589504 +69 48 44.715725208   13.3       ~ 161 1
32 Z 393-44 GiG 04 36 18.6262896600 -02 49 53.030942076   13.79   11.29   ~ 39 0
33 LEDA 15624 AG? 04 36 23.3795427648 -02 48 00.099203508   15.87   14.70   ~ 22 0
34 Z 393-45 Sy2 04 36 30.2724949056 -02 51 59.098177836   14.33   12.59   ~ 44 0
35 LEDA 15636 AG? 04 36 36.6000944952 -02 50 35.437200000   16.76   15.05   ~ 23 0
36 LEDA 16571 G 05 01 35.3 -04 15 24   18.53   17.06   ~ 28 0
37 NGC 1741B G 05 01 35.550 -04 15 47.42   15.35   14.73   ~ 66 0
38 LEDA 16573 G 05 01 37.832 -04 15 28.48   13.44   12.76   ~ 74 1
39 NGC 1741 EmG 05 01 38.3 -04 15 25   13.7   13.02 13.6 ~ 273 0
40 IC 399 EmG 05 01 44.0604445128 -04 17 19.319048052   15.0 14.8     ~ 76 0
41 NGC 1961 LIN 05 42 04.6327819680 +69 22 42.411028872   11.73 10.99     ~ 362 3
42 NGC 2339 H2G 07 08 20.5343958360 +18 46 48.812128644   12.3       ~ 150 1
43 NGC 2336 GiP 07 27 04.050 +80 10 41.05   13.46 12.51     ~ 251 0
44 NGC 2276 AG? 07 27 14.485 +85 45 16.20   12.3       ~ 393 0
45 Z 206-10 AG? 07 28 17.724 +40 46 11.36   15.50       ~ 155 0
46 NGC 2363A HII 07 28 42.8 +69 11 21           ~ 588 3
47 NGC 2366 H2G 07 28 52.4529 +69 12 38.859 12.25 11.86 11.39 11.33   ~ 801 0
48 NGC 2415 bCG 07 36 56.6678012232 +35 14 30.555503124   12.5       ~ 134 1
49 Z 236-32 AG? 08 11 08.311 +46 27 56.33   14.3       ~ 43 0
50 UGC 4305 IG 08 19 04.9864630512 +70 43 13.086910452 12.06 11.72 11.39 11.11   ~ 812 2
51 Z 311-8 GiG 08 34 07.20 +66 10 54.0 15.39 15.03 14.70 14.49   ~ 357 2
52 NGC 2683 AGN 08 52 41.3064829584 +33 25 18.597681516 11.57 10.68 9.79 9.38   ~ 475 1
53 NGC 2775 AG? 09 10 20.1334093488 +07 02 16.874157048   11.417 10.481 9.920 8.994 ~ 377 0
54 NGC 2783B GiG 09 13 32.834 +30 00 00.31   15.2   13.33   ~ 84 0
55 MCG+05-22-016 EmG 09 13 33.875 +30 00 51.45   16.41   15.87   ~ 45 0
56 MCG+05-22-018 AGN 09 13 34.0222370040 +30 02 23.333922168   17.01   15.97   ~ 49 0
57 MCG+05-22-020 GiG 09 13 37.3548457080 +29 59 58.392000564   16.51   14.44   ~ 44 0
58 NGC 2783 LIN 09 13 39.4766036016 +29 59 34.601211960   13.9   12.05   ~ 137 0
59 NGC 2841 LIN 09 22 02.6778711696 +50 58 35.737082868 10.43 10.09 9.22     ~ 1113 1
60 NGC 2903 AGN 09 32 10.111 +21 30 02.99 10.44 9.75 9.07 8.68   ~ 1204 3
61 Z 332-57 LSB 09 40 32.33 +71 10 56.0 14.53 14.00 13.66 13.41   ~ 372 1
62 Z 152-71 bCG 09 50 10.920 +28 00 47.27   15.3       ~ 54 0
63 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
64 MCG+12-10-012 AG? 09 57 32.8632 +69 02 50.735 15.19 15.15 14.10 14.12   ~ 327 4
65 NGC 3077 GiP 10 03 19.0965510921 +68 44 01.556166166 11.23 10.85 10.14 9.74   ~ 808 0
66 NGC 3185 Sy2 10 17 38.5650471192 +21 41 17.573817228   12.99 12.17 12.37   ~ 308 1
67 NGC 3187 GiP 10 17 47.8703571264 +21 52 23.984065272 13.71 13.91 13.44 14.06   ~ 166 1
68 NGC 3189 GiP 10 18 05.643 +21 49 54.98 12.60 12.12 11.15 11.14   ~ 422 2
69 NGC 3193 GiP 10 18 24.884 +21 53 38.32 12.29 11.83 10.88 12.19   ~ 301 1
70 M 95 GiP 10 43 57.7313485800 +11 42 13.301191332 10.71 10.51 9.73 9.48   ~ 1238 2
71 NGC 3353 AGN 10 45 22.390 +55 57 37.36 12.90 13.25 12.79     ~ 378 1
72 NGC 3504 LIN 11 03 11.19147 +27 58 20.7660   13.48 12.93     ~ 545 2
73 M 65 GiP 11 18 55.9084654776 +13 05 32.300703672   9.6       ~ 458 1
74 NGC 3631 AG? 11 21 02.8871865144 +53 10 10.415331660   11.0       ~ 385 1
75 NGC 3675 GiG 11 26 08.5641089832 +43 35 09.587062464   11.04   9.57   ~ 300 1
76 LEDA 35380 EmG 11 29 14.1694027224 +20 34 52.192200756   16.38   15.55   ~ 51 0
77 IC 700 GiG 11 29 15.3001498104 +20 34 59.400213672   14.16   13.94   ~ 50 0
78 LEDA 35384 GiG 11 29 16.28 +20 35 11.3   17.05   16.24   ~ 23 0
79 LEDA 35385 GiC 11 29 16.52 +20 35 19.0   18.26   17.85   ~ 21 0
80 NGC 3738 AGN 11 35 48.982 +54 31 24.70   12.12 12.04 11.56   ~ 303 0
81 NGC 3810 GiC 11 40 58.7615811624 +11 28 15.808680696   11.4       ~ 351 2
82 NGC 4041 SyG 12 02 12.2376697152 +62 08 14.096124312   11.6       ~ 270 1
83 NGC 4064 GiG 12 04 11.191 +18 26 36.42   12.5       ~ 186 0
84 NGC 4088 AGN 12 05 34.2230093952 +50 32 21.064017876   11.2       ~ 428 1
85 NGC 4102 Sy2 12 06 23.11513 +52 42 39.4160   11.8       ~ 449 1
86 NGC 4157 GiC 12 11 04.365 +50 29 04.85 12.48 12.15 11.35     ~ 373 2
87 NGC 4169 Sy2 12 12 18.7701840312 +29 10 45.851425968   12.9 12.34 11.67   ~ 148 1
88 NGC 4174 Sy2 12 12 26.8876661016 +29 08 57.158312172   14.3 13.64 13.05   ~ 114 2
89 NGC 4175 AGN 12 12 31.086 +29 10 08.06   14.2 13.45 12.71   ~ 119 0
90 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 1017 1
91 NGC 4449 EmG 12 28 11.118 +44 05 36.81 10.11 9.98 9.64 9.45   ~ 1192 1
92 NGC 4561 GiG 12 36 08.137 +19 19 21.32   12.7       ~ 211 0
93 NGC 4670 AG? 12 45 17.150 +27 07 31.76   12.6 12.90     ~ 271 0
94 NGC 4713 GiG 12 49 57.8802780576 +05 18 40.933127196   12.3       ~ 320 1
95 NGC 5248 G 13 37 32.0145074088 +08 53 06.496982448   11.4       ~ 554 0
96 NGC 5253 rG 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33 13.47 ~ 1421 4
97 NGC 5350 H2G 13 53 21.6232753416 +40 21 50.186768184   12.4   10.99   ~ 240 1
98 NGC 5353 rG 13 53 26.7104646981 +40 16 59.200050598   11.8   10.57   ~ 309 1
99 NGC 5354 LIN 13 53 26.7262413240 +40 18 09.928163700   12.3   10.64   ~ 169 0
100 NGC 5355 GiP 13 53 45.5694778488 +40 20 19.254210180   14.0   13.08   ~ 126 0
101 NGC 5358 GiP 13 54 00.4229168952 +40 16 38.364580668   14.6   13.35   ~ 102 0
102 NGC 5906 GiG 15 15 53.687 +56 19 43.86   11.4       ~ 807 0
103 NGC 6027A GiG 15 59 10.8358913184 +20 45 43.819011072   13.4   14.21   ~ 70 0
104 NGC 6027B GiG 15 59 11.156 +20 45 17.02   13.4   13.46   ~ 78 0
105 NGC 6027C GiG 15 59 11.875 +20 44 49.71   16.89   16.74   ~ 58 0
106 NGC 6027 GiG 15 59 12.542 +20 45 48.07   13.4   13.07   ~ 117 2
107 NGC 6643 AG? 18 19 46.370 +74 34 06.23   11.80       ~ 320 1
108 NGC 7317 Sy2 22 35 51.8681746944 +33 56 41.758033380 15.10 14.57 13.60 12.72   ~ 182 1
109 NGC 7318A GiP 22 35 56.70407 +33 57 55.7710   14.4   13.13   ~ 140 0
110 NGC 7318B GiP 22 35 58.3903354632 +33 57 57.827617524   14.06   12.47   ~ 144 0
111 NGC 7319 Sy2 22 36 03.602 +33 58 33.18   14.57 13.53 12.65   ~ 325 0
112 NGC 7541 GiG 23 14 43.857 +04 32 02.04   12.7       ~ 333 1
113 NGC 7547 GiG 23 15 03.4468657032 +18 58 24.094165512   14.9   12.92   ~ 58 0
114 NGC 7550 LIN 23 15 16.0635618785 +18 57 41.255155052   13.9   11.85   ~ 133 1
115 NGC 7549 GiG 23 15 17.285 +19 02 29.92   14.1   12.79   ~ 133 0
116 NGC 7553 GiG 23 15 33.0984377976 +19 02 53.479431456   15.85   13.90   ~ 33 0
117 MCG+01-59-046 G 23 19 27.8359540728 +09 29 40.355871360   16.38 15.38 14.66   ~ 46 0
118 NGC 7609 IG 23 19 30.0445916616 +09 30 29.844638928   15.23 14.29 13.43   ~ 69 0
119 VV 20b G 23 19 31.1134732704 +09 30 11.002447872   17.23 16.14 15.37   ~ 34 0
120 NGC 7625 AG? 23 20 30.132 +17 13 32.16 13.31 13.23 11.98 11.25   ~ 280 0
121 NGC 7673 EmG 23 27 41.060 +23 35 20.18 12.84 13.17 12.76     ~ 282 2
122 Z 455-20 EmG 23 34 53.2111620216 +18 13 36.854769108   14.7       ~ 90 0
123 NGC 7800 LSB 23 59 36.306 +14 48 20.06   13.4       ~ 105 0

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