1994A&AS..108..491L

Query : 1994A&AS..108..491L

1994A&AS..108..491L - Astron. Astrophys., Suppl. Ser., 108, 491-508 (1994/December-2)

Environments of Seyfert galaxies. I. Construction of the sample and selection effects.

LAURIKAINEN E., SALO H., TEERIKORPI P. and PETROV G.

Abstract (from CDS):

In order to build a satisfactory picture of Seyferts in relation to normal galaxies we have started a series of papers first establishing some of their basic environmental properties, especially the difference in the number of close companions between Seyfert 1 and Seyfert 2 galaxies. Here we report sample selections and discuss selection effects involved for the samples of 104 Seyferts and 138 control galaxies. The results of the statistical analyses are presented by Laurikainen & Salo (1994, Paper II). The neighbouring galaxies are counted on the Palomar Sky Survey Plates to the limiting magnitude ≃19mpg within the circles of 1.5Mpc in diameter (H0=100km/s/Mpc), large measuring circles enabling good elimination of the background galaxies. Subsamples are selected in order to test the methods by Dahari (1984) and by Fuentes-Williams & Stocke (1988). Elimination of background galaxies and problems related to comparison galaxy sample selection are discussed. The most important problem in our control galaxy sample selection is that the redshifts for most of the control galaxies are unknown. The size of this uncertainty is estimated by determining the redshifts by two ways: (1) by assuming that the selected comparison galaxy has the same redshift as the nearby Seyfert and (2) by Monte-Carlo simulations for Holmberg (1975) galaxy size distribution in space, taking into account the Malmquist bias. The mean redshifts of the comparison sample are estimated with these methods to be 0.028 and 0.029, respectively, compared with 0.026 for the Seyfert sample. Distribution of Seyferts in Zwicky's clusters is also addressed, and compared with previous studies. Taking into account optical projections, about 3/4 of the Seyferts are found to be field galaxies. Galaxies in clusters lie preferentially at the cluster borders.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clustering - interactions - Seyfert - methods: statistical

Simbad objects: 128

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Number of rows : 128
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 Z 478-15 Sy2 00 03 09.6087980256 +21 57 36.971989884   15.30 14.62     ~ 212 1
2 Mrk 335 Sy1 00 06 19.5372339024 +20 12 10.617404076   14.19 13.85     ~ 1344 0
3 NGC 17 Sy2 00 11 06.612 -12 06 28.33   14.14 13.52     ~ 369 1
4 Z 383-44 Sy2 00 37 35.8105507992 +00 16 50.503906236   15.01 14.09     ~ 81 0
5 Z 435-3 Sy1 00 47 19.3947899808 +14 42 12.536792244   17.50 16.95     ~ 106 0
6 NGC 262 Bla 00 48 47.14147900 +31 57 25.0845702 14.04 13.90 13.06 8.53   ~ 778 2
7 Z 501-58 Sy1 00 59 53.2855168104 +31 49 37.254192204   15.25 14.81     ~ 239 0
8 ZwCl 0107+3212 ClG 01 10.3 +32 28     12.14     ~ 23 0
9 Z 502-82 Sy2 01 25 31.4551524072 +32 08 10.473856512   15.01 13.96     ~ 237 0
10 Z 502-85 Sy1 01 26 33.5857133808 +31 36 58.719906144   16.02 15.23     ~ 101 0
11 Z 459-57 Sy1 01 27 32.5217343720 +19 10 43.839069600   14.89 14.22     ~ 333 0
12 NGC 591 Sy1 01 33 31.2305692968 +35 40 05.628351108   14.71 13.90     ~ 205 0
13 Z 386-35 Sy1 01 43 57.7777898304 +02 20 59.531401716   14.90 14.07     ~ 569 1
14 ZwCl 0150+3050 ClG 01 53.8 +31 05           ~ 4 0
15 NGC 863 Sy2 02 14 33.5604714720 -00 46 00.181845336   14.48 13.81 17.9   ~ 770 0
16 Z 523-8 Sy2 02 17 23.0369478336 +38 24 49.568961924   14.74 13.84     ~ 70 0
17 Z 414-1 Sy1 02 20 13.7343878928 +08 12 19.232322948   16.26 15.27     ~ 41 0
18 NGC 931 Sy1 02 28 14.4689104272 +31 18 41.469363324   15.71 14.74     ~ 426 1
19 ZwCl 0226+2600 ClG 02 28.9 +26 13           ~ 5 0
20 MCG-02-07-024 Sy1 02 30 05.5225590096 -08 59 53.207139372   14.74 14.29 13.981 13.585 ~ 332 0
21 NGC 985 Sy1 02 34 37.882 -08 47 17.02   14.64 14.28 12.9   ~ 449 0
22 Z 414-40 Sy1 02 41 34.8722696928 +07 11 13.854403392   15.46 14.69     ~ 136 0
23 ZwCl 0240+0740 ClG 02 43.3 +07 53           ~ 3 0
24 IC 1854 Sy1 02 49 20.6915840376 +19 18 14.440530996   15.86 14.81     ~ 119 0
25 Z 524-26 Sy2 02 49 51.8286238272 +34 59 16.858084056   15.48 14.54     ~ 78 0
26 NGC 1142 Sy2 02 55 12.2311509144 -00 11 00.807149472   15.42 14.41     ~ 350 1
27 Z 524-40 Sy2 02 59 58.5970307633 +36 49 13.808979663   14.89 13.96     ~ 369 1
28 ZwCl 0303+4125 ClG 03 06.3 +41 37           ~ 4 0
29 NGC 1241 Sy2 03 11 14.6195456232 -08 55 18.775959888 12.07 12.84 11.99 12.7 12.5 ~ 221 2
30 Z 540-64 Sy2 03 15 01.4292441960 +42 02 08.825019072   15.05 14.18 12.54   ~ 202 1
31 Mrk 609 Sy2 03 25 25.3590639624 -06 08 37.947546528   14.72 14.12 10.9   ~ 212 0
32 Mrk 612 Sy2 03 30 40.866 -03 08 15.69   15.03 14.25     ~ 100 0
33 NGC 1410 Sy2 03 41 10.7352537588 -01 17 55.554303993   16.06 15.22     ~ 37 0
34 IRAS 04385-0828 Sy1 04 40 54.9608896320 -08 22 22.126721232   15.71 14.5     ~ 128 0
35 IRAS 04502-0317 Sy2 04 52 44.5394406960 -03 12 57.133972800   15.80 15.0 14.85   ~ 59 0
36 Z 395-23 Sy1 05 16 11.4092471904 -00 08 59.157166920   14.30 13.92     ~ 953 1
37 Z 329-24 Sy2 06 15 36.2812259376 +71 02 14.837219808 14.21 14.03 12.97     ~ 960 2
38 Z 286-36 Sy1 07 36 57.0265753824 +58 46 13.432215792   14.77 14.37     ~ 262 0
39 ZwCl 0733+6102 ClG 07 37.8 +60 55           ~ 9 0
40 Z 235-30 Sy1 07 42 32.8210670808 +49 48 34.783809768   14.74 14.27     ~ 769 1
41 ZwCl 0739+4949 ClG 07 43.6 +49 42           ~ 5 0
42 Z 286-62 Sy1 07 47 29.0792948928 +60 56 00.658649544   15.18 14.71     ~ 253 0
43 ZwCl 0745+4020 ClG 07 48.9 +40 12           ~ 3 0
44 Z 207-5 Sy1 07 55 25.2937526808 +39 11 09.913119252   16.45 16.11     ~ 213 0
45 ZwCl 0801+3954 ClG 08 04.7 +39 45           ~ 3 0
46 Z 207-33 Sy2 08 07 40.9957797624 +39 00 15.247008108   14.90 14.08     ~ 190 0
47 NGC 2622 Sy2 08 38 10.9382999472 +24 53 42.993798288   15.01 14.12     ~ 174 1
48 SDSSCGA 355 CGG 08 40 04.29 +25 00 28.9           ~ 9 0
49 ZwCl 0909+1814 ClG 09 12.5 +18 02           ~ 4 0
50 Z 91-65 Sy1 09 18 25.9971991776 +16 18 19.633269600   14.82 14.20     ~ 293 0
51 Mrk 110 Sy1 09 25 12.8479065576 +52 17 10.386311208   16.82 16.41     ~ 681 1
52 Z 122-46 Sy2 09 40 44.5072404432 +21 14 03.368948028   15.41 14.53     ~ 58 0
53 Z 7-49 Sy1 09 52 19.168 -01 36 44.10   14.99 14.39 11.2   ~ 348 1
54 NGC 3080 Sy1 09 59 55.8492582720 +13 02 37.750657668   16.66 16.36     ~ 152 0
55 Z 313-11 Sy1 10 19 12.5653238136 +63 58 02.626090176   16.32 16.00     ~ 166 0
56 Mrk 417 Sy2 10 49 30.9259950912 +22 57 52.375267800   16.0       ~ 107 0
57 ZwCl 1048+2358 ClG 10 51.3 +23 42           ~ 3 0
58 Z 66-94 Sy1 11 01 01.7740767504 +11 02 48.909646824   17.46 16.91     ~ 122 0
59 ZwCl 1058+1049 ClG 11 01.2 +10 33           ~ 3 0
60 MCG+09-19-073 Sy1 11 25 36.1539761184 +54 22 57.113791824   17.06 16.47     ~ 311 0
61 ZwCl 1123+3541 ClG 11 26.6 +35 24           ~ 3 0
62 Z 185-66 Sy2 11 26 48.4988872152 +35 15 03.212861508   15.04 14.29     ~ 144 0
63 Mrk 176 Sy2 11 32 40.2448971432 +52 57 01.289256768   15.50 14.61 13.52   ~ 244 1
64 NGC 3758 Sy1 11 36 29.3703820296 +21 35 45.984535728   14.8       ~ 174 0
65 ZwCl 1138+5650 ClG 11 41 47.71 +56 45 19.0           ~ 7 0
66 Z 243-24 Sy2 11 53 41.7732361680 +46 12 42.174375120   16.24 15.45     ~ 224 0
67 Mrk 1310 Sy1 12 01 14.3530384560 -03 40 41.015051940   16.31 15.89 14.780   ~ 218 0
68 NGC 4074 Sy2 12 04 29.6666072616 +20 18 58.654406844   15.43 14.44     ~ 174 0
69 ZwCl 1202+2028 ClG 12 04.6 +20 11           ~ 2 0
70 Z 243-45 Sy2 12 09 14.108 +47 03 30.09   15.55 14.73     ~ 161 1
71 MCG+09-20-136 Sy2 12 16 07.0972137408 +50 49 30.088685496   17.20 16.62     ~ 88 1
72 NGC 4253 Sy1 12 18 26.5163572920 +29 48 46.531535472   14.34 13.57     ~ 1106 1
73 NGC 4748 Sy1 12 52 12.4650934680 -13 24 53.262019944   14.73 14.03 12.82   ~ 287 0
74 Z 294-4 Sy1 12 56 14.2341182928 +56 52 25.238373852   14.68 13.84     ~ 2096 3
75 ZwCl 1257+2806 ClG 12 59.5 +27 50           ~ 4 0
76 NGC 4922N Sy2 13 01 25.2660290577 +29 18 49.879144069   15.60 14.67 13.85   ~ 265 5
77 NGC 4933B GiG 13 03 56.9723852280 -11 29 47.977482444   13       ~ 22 0
78 MCG-03-34-064 Sy2 13 22 24.4583154360 -16 43 42.481822404   14   13.16   ~ 345 2
79 NGC 5135 Sy2 13 25 44.059 -29 50 01.24   12.58 13.35 11.53 12.2 ~ 500 1
80 NGC 5256 PaG 13 38 17.81 +48 16 41.2   14.1 13.42     ~ 449 1
81 NGC 5283 Sy2 13 41 05.7499712616 +67 40 19.967186280   14.97 14.05     ~ 269 0
82 Z 161-119 Sy2 13 41 11.1362655600 +30 22 41.249229816   15.60 14.66     ~ 197 0
83 ZwCl 1339+3030 ClG 13 42.2 +30 15           ~ 3 0
84 Z 271-60 Sy2 13 44 42.1883001099 +55 53 13.596220922   15.68 14.91     ~ 958 3
85 IC 4329 BiC 13 49 05.314 -30 17 45.20   11.96 11.54 10.31   ~ 192 2
86 Z 336-28 Sy1 13 53 03.4348964112 +69 18 29.410910460   15.15 14.46     ~ 812 1
87 NGC 5548 Sy1 14 17 59.5400291832 +25 08 12.603122268   14.35 13.73     ~ 2895 0
88 Z 192-9 Sy2 14 22 55.3351468896 +32 51 02.303840160   15.27 14.42     ~ 148 1
89 [HB91] 1423-116 Sy2 14 25 42 -11 19.5           ~ 2 0
90 NGC 5683 Sy1 14 34 52.4587723488 +48 39 42.730942860   16.46 16.08     ~ 192 1
91 NGC 5695 Sy2 14 37 22.1349838776 +36 34 04.201272336   14.55 13.60     ~ 215 0
92 Z 273-23 Sy2 14 40 38.0960806920 +53 30 15.961505184   16.05 15.03     ~ 341 1
93 NGC 5728 Sy2 14 42 23.8918506576 -17 15 11.240783784   14.34 13.40     ~ 679 1
94 Z 134-43 Sy2 14 50 37.8500235408 +22 44 03.576974676   15.7       ~ 87 0
95 Z 165-65 Sy1 15 29 40.5830776920 +30 29 09.328569684   15.84 14.86     ~ 71 0
96 Mrk 290 Sy1 15 35 52.4031021552 +57 54 09.515660508   15.55 15.27     ~ 575 0
97 Mrk 486 Sy1 15 36 38.4011947776 +54 33 33.215039244   15.21 14.78     ~ 292 1
98 ZwCl 1552+3435 ClG 15 54.5 +34 26           ~ 2 0
99 Z 195-3 Sy1 15 59 09.6231720696 +35 01 47.561352852   15.69 15.06     ~ 346 0
100 IC 1198 Sy1 16 08 36.3765301680 +12 19 51.601799568   15.63 14.94     ~ 135 0
101 Z 224-14 Sy1 16 23 45.8806648032 +41 04 56.429671836   17.04 16.61     ~ 126 0
102 ZwCl 1625+4006 ClG 16 27.2 +39 59           ~ 3 0
103 Z 320-30 Sy1 16 29 48.3839075712 +67 22 41.976035976   15.38 14.56     ~ 90 0
104 MCG+05-40-026 Sy1 17 01 07.7786859408 +29 24 24.583886064   16.63 15.78     ~ 106 1
105 ZwCl 1701+2830 ClG 17 03.4 +28 26           ~ 3 0
106 ZwCl 1745+6703 ClG 17 36 27.7 +68 04 31           ~ 19 0
107 NGC 6423 Sy1 17 36 53.3323686648 +68 10 17.342020200   15.6       ~ 21 0
108 Z 254-44 Sy2 18 28 48.0776972472 +50 22 20.766036828   15.0       ~ 34 0
109 ZwCl 1916+4855 ClG 19 18.2 +49 01           ~ 4 0
110 Mrk 509 Sy1 20 44 09.7504483224 -10 43 24.727155528   13.35 13.12 10.7   ~ 1370 0
111 MCG-01-53-008 Sy1 20 46 20.8414665240 -02 48 45.360840096   15.27 14.61     ~ 135 0
112 NGC 7212a Sy1 22 07 01.9870259424 +10 14 00.838175892   15.1       ~ 217 1
113 NGC 7214 Sy1 22 09 07.6631604816 -27 48 34.160960772   12.48 14.10 11.40   ~ 149 0
114 NGC 7319 Sy2 22 36 03.602 +33 58 33.18   14.57 13.53 12.65   ~ 325 0
115 MCG-02-57-023 Sy2 22 36 46.4981814408 -12 32 42.887039748   15.35 14.50 13.6   ~ 192 0
116 Z 495-12 Sy2 22 41 07.5805261416 +32 10 11.073002988   14.95 14.10     ~ 94 1
117 Z 452-43 SyG 22 41 55.9547870544 +20 15 41.376301128   15.28 14.65     ~ 65 0
118 Z 495-18 Sy1 22 42 39.3363009144 +29 43 31.302092640   14.86 14.16     ~ 748 1
119 Mrk 522 Sy2 23 00 19.0988664624 +16 22 58.127576304   16.40       ~ 24 0
120 NGC 7450 Sy1 23 00 47.8143025368 -12 55 06.530572776   15.19 14.33 13.4 13.3 ~ 139 0
121 ZwCl 2259+0746 ClG 23 02.1 +08 02           ~ 5 0
122 NGC 7469 Sy1 23 03 15.6 +08 52 26 12.60 13.00 12.34     ~ 2253 3
123 Mrk 315 Sy1 23 04 02.6208829104 +22 37 27.433279164   15.60 14.78     ~ 151 0
124 NGC 7592W Sy2 23 18 21.8077569718 -04 24 56.904279971     15.0     ~ 175 0
125 NGC 7592 IG 23 18 22.2 -04 24 57           ~ 177 0
126 NGC 7603 Sy1 23 18 56.6538277656 +00 14 37.977066096   14.73 14.01     ~ 438 0
127 ZwCl 2320+0845 ClG 23 22.5 +09 01           ~ 7 0
128 NGC 7674 Sy1 23 27 56.6973043968 +08 46 44.253707772 13.84 13.92 13.23 12.64   ~ 738 2

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