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Table 2: Main parameters of the studied BCG sample.
# BCG Name $\alpha_{1950.0}$ $\delta_{1950.0}$ $V_{\rm hel}$ Ref $D_{\rm Vir}$ mB MB Glob. Other
    h m s $\circ$ $\prime$  $\prime\prime$ km s-1 Vel Mpc mag mag envir Names
  (1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
1 0741+535 07 41 34.8 +53 32 55 5564 1 77.1 *17.06 -17.38 GF Mkn 1409
2 0749+568 07 49 37.8 +56 49 41 5488 1 76.3 +18.02 -16.39 GF  
3 0834+518 08 34 03.6 +51 48 53 749 2 13.0 *17.22 -13.35 LS Mkn 94
4 0912+599 09 12 53.5 +59 58 53 4150 1 59.2 +15.39 -18.47 GF Mkn 19
5 0913+536 09 13 12.7 +53 39 07 2203 2 33.8 n14.60 -18.04 GF Mkn 104
6 0917+527 09 17 25.7 +52 46 53 2323 1 35.4 16.48 -16.27 GF Mkn 1416
7 0926+606A 09 26 20.1 +60 40 02 4002 1 59.1 +16.77 -17.09 GF  
8 0926+606B 09 26 23.0 +60 41 15 4090 1 59.1 +17.31 -16.55 GF  
9 0930+554 09 30 30.3 +55 27 46 751 1 14.2 +16.50 -14.26 LS Mkn 116=IZw18
10 0940+544 09 40 51.0 +54 25 21 1638 1 26.7 +17.32 -14.81 GF  
11 0942+573 09 42 56.4 +57 20 55 1177 1 20.6 *17.17 -14.40 LS Mkn 1424
12 0943+543 09 43 40.7 +54 19 33 1644 2 26.8 +17.37 -14.79 GF  
13 0946+558 09 46 03.4 +55 48 49 1551 1 25.6 16.28 -15.76 LS Mkn 22
14 1001+555 10 01 20.7 +55 33 22 1116 1 19.7 16.02 -15.45 LS  
15 1008+589 10 08 31.7 +58 58 53 2096 2 32.9 *16.19 -16.40 GF Mkn 27
16 1011+601 10 11 31.5 +60 06 07 2160 1 33.7 +17.23 -15.41 GF  
17 1011+600 10 11 33.7 +60 03 59 2160 1 33.7 17.26 -15.38 GF  
18 1029+546 10 29 22.7 +54 39 30 1451 2 24.3 n13.40 -18.55 LS Mkn 33
19 1030+583 10 30 56.3 +58 19 20 2269 2 35.1 16.82 -16.03 GF Mkn 1434
20 1033+531 10 33 30.6 +53 06 34 986 1 17.9 16.16 -15.10 LS  
21 1037+494 10 37 42.1 +49 28 05 1496 1 25.0 16.49 -15.50 LS  
22 1042+562 10 42 16.0 +56 13 21 944 2 17.4 13.34 -17.86 LS Mkn 35
23 1051+545 10 51 38.2 +54 34 18 1350 2 23.2 12.45 -19.39 LS Arp 205
24 1054+504 10 54 02.7 +50 24 28 1354 1 23.4 16.20 -15.65 LS  
25 1057+511B 10 57 10.6 +51 07 30 3056 2 45.2 15.99 -17.32 GF  
26 1114+587 11 14 10.7 +58 47 22 1594 1 26.7 +16.33 -15.80 GF  
27 1114+517 11 14 42.7 +51 42 16 2838 1 43.4 16.41 -16.78 GF Mkn 1445
28 1116+517 11 16 45.2 +51 46 38 1341 2 23.1 17.14 -14.68 LS CG 1116+51
29 1119+586 11 19 45.7 +58 36 05 1583 1 26.5 +18.56 -13.56 LS  
30 1122+575 11 22 12.8 +57 32 37 1336 3 23.2 *17.51 -14.32 LS  
31 1123+576 11 23 23.2 +57 37 42 289 1 3.5* 16.76 -10.96 LS  
32 1123+594 11 23 53.7 +59 25 50 1199 2 21.4 14.44 -17.21 LS Mkn 169
33 1124+541 11 24 45.5 +54 11 26 2940 1 44.0 16.17 -17.05 GF Mkn 1446
34 1125+562 11 25 16.8 +56 13 03 5591 2 78.0 16.82 -17.64 GF  
35 1128+573 11 28 29.1 +57 20 33 1799 2 29.1 18.18 -14.12 GF  
36 1129+576 11 29 15.5 +57 39 17 1566 2 26.3 16.50 -15.60 LS  
37 1130+495 11 30 45.7 +49 30 54 249 2 3.5 n14.50 -13.22 LS Mkn 178
38 1135+581 11 35 51.3 +58 09 24 946 2 18.1 15.85 -15.44 LS Mkn 1450
39 1136+607 11 36 26.3 +60 47 22 3457 2 51.0 *17.74 -15.80 GF  
40 1137+589 11 37 48.4 +58 55 10 2032 1 32.5 18.35 -14.21 GF  
41 1147+520 11 47 16.4 +52 00 51 1079 2 19.4 17.03 -14.70 LS  
42 1149+596 11 49 55.9 +59 39 37 3351 1 49.0 *15.98 -17.47 GF  
43 1152+579 11 52 51.9 +57 56 34 5157 1 72.6 17.08 -17.22 GF Mkn 193
44 1159+545 11 59 28.9 +54 32 32 3537 2 51.6 18.26 -15.36 GF  
45 1159+516B 11 59 31.7 +51 40 18 4424 1 63.2 17.23 -16.77 GF  
46 1203+592 12 03 43.2 +59 14 59 3256 1 48.1 *16.23 -17.18 GF  
47 1205+557 12 05 57.6 +55 42 08 1740 1 28.7 17.35 -14.94 GF  
48 1211+540 12 11 34.0 +54 01 59 907 1 17.2 17.67 -13.51 LS  
49 1212+493 12 12 06.1 +49 23 28 3607 2 55.0 *17.64 -16.06 GF  
50 1213+597 12 13 34.9 +59 47 09 4420 1 62.7 15.48 -18.51 GF Mkn 1468
51 1221+585 12 21 19.7 +58 31 23 4350 3 62.1 16.52 -17.45 GF  
52 1221+545B 12 21 58.6 +54 31 24 5704 1 78.1 18.26 -16.20 GF  
53 1222+588 12 22 29.2 +58 49 17 4722 2 67.1 17.07 -17.06 GF  
54 1222+614 12 22 44.3 +61 25 42 734 2 14.1 15.21 -15.54 LS  
55 1241+549 12 41 30.3 +54 55 11 4945 1 67.5 *17.92 -16.23 GF  
56 1242+549 12 42 20.2 +54 59 51 4740 2 67.0 15.93 -18.21 GF  
57 1307+563 13 07 41.7 +56 18 23 5165 2 73.1 +18.29 -16.03 GF  
58 1314+605 13 14 54.1 +60 34 21 1848 1 30.3 17.10 -15.31 GF  
59 1317+523A 13 17 42.8 +52 19 57 4619 1 65.8 *16.22 -17.87 GF  
60 1318+520 13 18 07.6 +52 01 37 4740 1 67.4 15.92 -18.22 GF  
61 1319+579 13 19 27.0 +57 57 22 1978 2 33.5 15.55 -17.08 GF NGC 5113
62 1331+493 13 31 19.9 +49 21 32 590 1 11.3 15.11 -15.16 LS  
63 1340+529 13 40 56.0 +52 57 22 1801 1 29.6 16.36 -16.00 GF Mkn 1480
64 1341+529 13 41 03.7 +52 56 22 1797 1 29.7 16.59 -15.77 GF Mkn 1481
65 1341+594 13 41 45.1 +59 25 07 3037 1 45.6 17.48 -15.81 GF  
66 1358+554E 13 58 48.8 +55 29 44 3857 1 55.9 *16.46 -17.28 GF  
67 1401+490 14 01 50.0 +49 00 18 777 1 14.9 17.28 -13.59 LS CG 337
68 1413+495 14 13 18.7 +49 34 26 3923 1 56.8 16.82 -16.95 GF CG 383
69 1423+517 14 23 40.9 +51 46 45 2141 2 34.1 16.80 -15.86 GF CG 424
70 1430+596 14 30 03.5 +59 36 42 1855 1 30.4 16.44 -15.97 GF CG 470
71 1430+526A 14 30 53.3 +52 37 59 3424 1 50.4 *16.30 -17.21 GF  
72 1446+595 14 46 20.6 +59 34 20 2121 2 33.9 17.15 -15.50 GF  
73 1448+526 14 48 27.6 +52 36 43 726 1 14.9 15.76 -15.11 LS Mkn 826
74 1453+526 14 53 09.2 +52 37 52 3267 2 48.1 17.08 -16.33 GF CG 577
75 1503+531 15 03 02.0 +53 06 54 5619 2 78.6 17.26 -17.22 GF CG 618
76 1504+514N 15 04 18.8 +51 26 54 3796 1 55.1 15.11 -18.60 GF CG 625
77 1523+519 15 23 51.6 +51 55 22 3645 1 53.1 17.05 -16.58 GF CG 707
78 1524+554 15 24 40.1 +55 25 30 3409 1 50.3 *16.83 -16.68 GF  
79 1533+574 15 33 03.8 +57 27 01 3310 1 49.0 16.23 -17.22 GF  
80 1535+554 15 35 48.8 +55 25 35 667 1 13.9 15.44 -15.28 LS Mkn 487
81 1551+601A 15 51 46.4 +60 11 29 2932 1 44.2 16.68 -16.55 GF  
82 1555+515 15 55 40.2 +51 30 54 3617 3 55.3 18.51 -15.20 GF  
83 1620+577 16 20 15.4 +57 44 45 4848 4 60.6 16.75 -17.16 GF  
84 1632+578 16 32 40.8 +57 52 38 5530 1 69.7 18.09 -16.13 GF  
85 1634+523 16 34 07.8 +52 18 57 2700 1 41.0 15.84 -17.22 GF Mkn 1499
86 1707+565 17 07 03.4 +56 34 34 3323 1 49.3 16.39 -17.07 GF  


 
Table 3: Parameters of the strongest disturbers of BCGs - probable SF burst triggers.
# BCG name Partner's $\alpha_\mathrm{1950.0}^\mathrm{Part}$ $\delta_\mathrm{1950.0}^\mathrm{Part}$ $V_{\rm hel}^\mathrm{BCG}$ $V_{\rm hel}^{\rm Part}$ Ref Part. Part. $\Delta M_{B}$ $D_{\rm Proj}$ Trig
    name h m s $\circ$ $\prime$  $\prime\prime$ km s-1 km s-1 V $B_{\rm NED}$ $M_{B}^{\rm T}$   kpc type
  (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11)  
1 0741+535 0741+535 - - 5462 -   - - - - m?
2 0749+568 - - - 5471 -   - - - -  
3 0834+518 UGC 4499 08 34 02.0 51 49 38 749 691 5 13.5 -16.3 -2.9 3 p
4 0912+599 0912+599 - - 4150 -   - - - - m
5 0913+536 UGC 4906 09 14 08.1 53 12 16 2203 2307 5 13.5 -19.0 -1.0 277 b
6 0917+527 UGC 4906 09 14 08.1 53 12 16 2323 2307 5 13.5 -19.0 -2.7 404 p
7 0926+606A S0926+606B 09 26 23.0 60 41 15 4002 4090 1 +17.3 -16.4 +0.7 22 b
8 0926+606B S0926+606A 09 26 20.1 60 40 02 4090 4002 1 +16.8 -16.8 -0.2 22 b
9 0930+554 - - - 751 -   - - - -  
10 0940+544 S0943+543 09 43 40.7 54 19 33 1638 1644 2 +17.4 -14.3 +0.1 197 b
11 0942+573 0942+573 - - 1177 -   - - - - m
12 0943+543 S0940+544 09 40 51.0 54 25 21 1644 1638   +17.3 -14.4 -0.1 198 b
13 0946+558 0946+558 - - 1551 -   - - - - m?
14 1001+555 NGC 3079 09 58 35.0 55 55 15 1116 1125 2 11.5 -19.4 -3.9 184 p
15 1008+589 UGC 5480 10 06 48.9 58 44 07 2096 2145 2 15.4 -16.9 -0.5 190 b
16 1011+600 S1011+601 10 11 31.5 60 06 07 2160 2160 1 +17.2 -15.1 +0.3 21 b
17 1011+601 S1011+600 10 11 33.7 60 03 59 2160 2160 1 +17.3 -15.0 +0.4 21 b
18 1029+546 UGC 5676 10 25 53.7 54 58 19 1451 1412 5 14.5 -16.9 +1.6 251 f
19 1030+583 1030+583 - - 2269 -   - - - - m?
20 1033+531 NGC 3310 10 35 40.1 53 45 49 986 983 5 11.0 -19.6 -4.5 228 p
21 1037+494 - - - 1496 -   - - - -  
22 1042+562 UGC 5888 10 44 40.3 56 21 17 944 1239 2 14.8 -16.3 +1.6 109 f
23 1051+545 UGC 6016 10 51 12.7 54 33 12 1350 1493 2 *15.9 -15.6 +3.8 26 f
24 1054+504 UGC 6029 10 52 06.1 49 59 36 1375 1363 2 14.0 -17.3 -1.6 211 p
25 1057+511B UGC 6074 10 57 02.6 51 10 08 3056 2885 1 14.2 -18.7 -1.4 38 p
26 1114+587 UGC 6304 11 14 55.7 58 37 33 1594 1762 2 *15.9 -16.0 -0.2 89 b
27 1114+517 UGC 6309 11 14 56.7 51 45 01 2838 2870 1 13.7 -19.2 -2.4 44 p
28 1116+517 - - - 1341 -   - - - -  
29 1119+586 NGC 3642 11 19 25.6 59 21 01 1583 1588 2 11.9 -19.8 -6.2 346 p
30 1122+575 NGC 3683 11 24 43.1 57 09 14 1336 1716 2 13.2 -18.6 -4.3 209 p
31 1123+576 NGC 3738 11 33 04.5 54 47 58 289 229 2 11.8 -15.6 -4.6 191 p
32 1123+594 NGC 3642 11 19 25.0 59 20 55 1199 1588 2 11.9 -19.8 -2.6 215 p
33 1124+541 NGC 3656 11 20 50.5 54 07 08 2940 2869 2 13.3 -19.6 -2.6 445 p
34 1125+562 S1124+561 11 24 54.1 56 11 47 5591 5456 6 *15.9 -18.4 -0.8 77 b
35 1128+573 NGC 3683 11 24 43.1 57 09 14 1799 1716 2 13.2 -18.6 -4.5 275 p
36 1129+576 S1129+577 11 29 16.7 57 43 00 1566 1457 2 *15.9 -15.5 +0.1 29 b
37 1130+495 1130+495 - - 249 -   - - - - m
38 1135+581 UGC 6616 11 36 36.9 58 32 43 946 1154 2 13.7 -17.2 -1.8 127 p
39 1136+607 UGC 6619 11 36 43.4 60 49 26 3457 3465 5 15.4 -17.9 -2.1 44 p
40 1137+589 1137+589 - - 2032 -   - - - - m?
41 1147+520 NGC 3917 11 48 07.7 52 06 09 1079 968 2 12.5 -18.1 -3.4 54 p
42 1149+596 NGC 3894 11 46 11.4 59 41 41 3351 3223 2 12.6 -20.6 -3.1 405 p
43 1152+579 UGC 6939 11 55 07.4 57 50 38 5157 4987 5 14.6 -19.5 -2.3 400 p
44 1159+545 1159+545 - - 3537 -   - - - - m?
45 1159+516B - - - 4424 -   - - - -  
46 1203+592 1203+592 - - 3256 -   - - - - m
47 1205+557 - - - 1740 -   - - - -  
48 1211+540 NGC 4142 12 07 00.6 53 22 58 907 1157 2 13.9 -16.3 -2.8 282 p
49 1212+493 - - - 3607 -   - - - -  
50 1213+597 NGC 4195 12 11 51.0 59 53 32 4420 4350 5 14.9 -18.9 -0.4 265 b
51 1221+585 NGC 4358 12 21 39.1 58 39 44 4350 4497 2 14.3 -19.6 -2.1 158 p
52 1221+545B - - - 5704 -   - - - -  
53 1222+588 NGC 4358 12 21 39.1 58 39 44 4722 4497 2 14.3 -19.6 -2.5 225 p
54 1222+614 M10-18-044 12 22 32.6 61 20 26 734 709 2 *15.3 -14.6 +0.9 23 b
55 1241+549 Mkn 220 12 41 31.8 55 10 11 4945 4933 2 14.1 -20.0 -3.8 295 p
56 1242+549 A1242+5458 12 42 24.4 54 58 48 4740 4598 4 +18.6 -15.3 +2.9 26 f
57 1307+563 - - - 5165 -   - - - -  
58 1314+605 UGC 8282 13 09 53.9 60 30 46 1848 2073 5 14.8 -17.4 -2.1 327 p
59 1317+523A A1317+5219 13 17 44.1 52 19 24 4619 4737 4 *16.6 -17.4 +0.5 12 b
60 1318+520 - - - 4740 -   - - - -  
61 1319+579 NGC 5109 13 18 55.3 57 54 16 1978 2131 5 13.8 -18.8 -1.7 52 p
62 1331+493 NGC 5194 13 27 46.0 47 27 22 590 463 2 9.0 -20.0 -4.8 393 p
63 1340+529 Mkn 1481 13 41 03.5 52 56 22 1801 1797 1 +16.6 -15.3 +0.7 13 b
64 1341+529 Mkn 1480 13 40 55.9 52 57 36 1797 1801 1 +16.4 -15.5 +0.3 13 b
65 1341+594 - - - 3037 -   - - - -  
66 1358+554E 1358+554E - - 3857 -   - - - - m
67 1401+490 - - - 777 -   - - - -  
68 1413+495 - - - 3923 -   - - - -  
69 1423+517 NGC 5624 14 24 51.8 51 48 30 2142 1923 2 14.1 -17.9 -2.0 110 p
70 1430+596 NGC 5667 14 28 28.2 59 41 29 1855 1943 2 13.2 -18.9 -2.9 115 p
71 1430+526A - - - 3424 -   - - - -  
72 1446+595 NGC 5777 14 49 59.8 59 10 58 2121 2145 2 14.1 -18.2 -2.7 358 p
73 1448+526 UGC 9630 14 45 51.7 53 02 21 729 716 2 15.9 -14.0 +1.1 151 b
74 1453+526 - - - 3267 -   - - - -  
75 1503+531 UGC 9688 15 02 32.9 53 07 22 5619 5833 5 14.7 -19.8 -2.6 100 p
76 1504+514N UGC 9702 15 03 41.0 51 21 03 3796 3855 4 15.6 -18.0 +0.6 133 b
77 1523+519 - - - 3645 -   - - - -  
78 1524+554 Mkn 481 15 26 33.2 55 36 33 3409 3298 2 *16.7 -16.5 +0.2 285 b
79 1533+574 1533+574 - - 3310 -   - - - - m
80 1535+554 NGC 5963 15 32 16.0 56 43 31 665 655 2 13.0 -16.7 -1.4 337 p
81 1551+601A 1551+601A - - 2932 -   - - - - m?
82 1555+515 UGC 10123 15 57 41.1 51 26 43 3617 3706 5 15.1 -18.4 -3.2 309 p
83 1620+577 NGC 6130 16 18 34.6 57 43 56 4848 5137 5 14.3 -19.9 -2.7 238 p
84 1632+578 NGC 6187 16 30 41.0 57 48 43 5530 5477 5 *15.3 -19.0 -2.9 333 p
85 1634+523 1634+523 - - 2700 -   - - - - m
86 1707+565 1707+565 - - 3323 -   - - - - m?

Notes for Table 3
0741+535 well advanced merger morphology. Bright galaxy NGC 2431 with MB=-22.4 at the projected distance 480 kpc and $\Delta V=216$ km s-1.
0749+568 faint galaxy ( $\Delta B\sim2 ^{\rm m}$) at ${\sim}23''$ to SW.
0834+518 very close in projection to much more massive galaxy.
0912+599 two disks in contact, both with SF burst.
0926+606A/0926+606B interacting pair of BCGs with synchronized SF burst.
0930+554 complex morphology with propagating SF wave (Izotov 1999, private communication).
0940+544/0943+543 interacting pair of BCGs.
0942+573 merger/galaxy pair (Mazzarella et al. 1991).
0946+558 double nuclei galaxy (Mazzarella et al. 1991).
1001+555 bent edge-on disk.
1011+601A/1011+600B interacting pair of BCGs with synchronized SF burst.
1029+546 There is a galaxy of ${\sim}3^{\rm m}$ fainter at 4.7$^{\prime}$ to NEE. If at the same distance, its projected distance from Mkn 33 is ${\sim}30$ kpc.
1030+583 Disturbed morphology.
1051+545 Faint companion with evidences of interaction (Karachentseva et al. 1996).
1057+511B Highly disturbed morphology.
1116+517 There are galaxies with MB=-18.7 and -20.8 at ${\sim}600$ kpc.
1119+586 Besides of massive companion NGC 3642, there is another massive galaxy NGC 3619 with close parameters and projected distance, and two more probable companions: SBS 1121+586 at 74 kpc and ${\sim}1\hbox{$.\!\!^{\rm m}$ }6$ brighter and SBS 1119+583 at 139 kpc and ${\sim}1\hbox{$.\!\!^{\rm m}$ }8$ brighter. They all probably enter to one group.
1123+576 Member of close complex in Canes Venatici. For brighter dwarf companion NGC 3738 photometrical distance 3.52 Mpc from Georgiev et al. (1997) is accepted.
1128+573 Massive parent. Merger morphology.
1129+576 Brighter dwarf companion with bent edge-on disk.
1130+495 Member of close complex in Canes Venatici. Merger, or galaxy pair? (Mazzarella et al. 1991).
1135+581 Brighter dwarf companion with SF burst in very center.
1149+596 Companion of galaxy pair KPG 303?
1159+545 Merger, or companion of massive spiral Mkn 433.
1159+516B Pair of close dwarfs? No velocity for candidate companion.
1203+592 Very close faint companion.
1205+557 SF burst in center and disturbed morphology. Several galaxies of comparable brightness in the vicinity with no redshift.
1211+540 Brighter dwarf companion. BCG has disturbed morphology.
1212+493 No companions? Massive galaxy with very close $V_{\rm r}$ at ${\sim}700$ kpc.
1213+597 Disturbed morphology.
1221+545B No candidate companions.
1222+588 NGC 4335 at 280 kpc is one more massive companion with comparable tidal effect. BCG has disturbed perephery.
1242+549 BCG with tidal tail. Faint blue companion at ${\sim}25$ kpc.
1307+563 2 candidate brighter companions with no velocity.
1314+605 Brighter dwarf companion.
1317+523A There is a third galaxy Mkn 251 of close brightness at ${\sim}60$ kpc and $\Delta V=-60$ km s-1.
1318+520 Close edge-on disk galaxy at 2' with no velocity.
1331+493 Massive parent. BCG with propogating SF (Zenina et al. 1997).
1340+529/1341+529 Close pair of BCGs with synchronized SF burst.
1341+594 No evident companions. Disturbed morphology.
1358+554E Disturbed morphology, probable merger.
1413+495 No neighbours? Highly disturbed morphology. The optical redshift, consistent with HI one from Thuan et al. (1999) is presented at first time. That one in Doublier et al. (1997) is mistaken.
1430+526A No neighbours? Irr. morphology. Two close candidate companions with no velocity.
1503+531 Massive parent. BCG has disturbed morphology.
1523+519 No neighbours? Faint galaxy at ${\sim}3'$ with no velocity.
1524+554 One more brighter galaxy Mkn 482, 2.1 mag. brighter, at 370 kpc with similar tidal effect.
1533+574 Merger, or a massive companion at ${\sim}500$ kpc.
1551+601A Merger, or pair with a similar galaxy at ${\sim}300$ kpc.
1634+523 = I Zw 159. Blue double compact with faint blue plumes north and south. (NED).


Table A.1. Parameters of Observed Galaxies.
# Galaxy $\alpha_{1950.0}$ $\delta_{1950.0}$ mB $V_{\rm hel}$ MBa Type Other Identified
  Name h m s $\circ$ $\prime$  $\prime\prime$ mag km s-1 mag   Names Lines
  (1) (2) (3) (4) (5) (6) (7) (8) (9)
SBS BCGs and discovered real neighbours
1 0916+5417 09 16 33.9 +54 17 21 +16.6 3640$\pm$46 -16.8 BCG?   [OII] $\lambda$3727, [OIII] $\lambda$4959+5007, H$\alpha$
2 1120+5838 11 20 56.2 +58 38 39 *18.0 11109$\pm$39 -17.9 BCG?   H$\beta$, [OIII] $\lambda$4959+5007
3 1242+5458 12 42 24.4 +54 58 48 +18.6 4598$\pm$60 -15.3 BCG?   [OII] $\lambda$3727, H$\beta$, [OIII] $\lambda$4959+5007, H$\alpha$
4 1317+5219 13 17 44.1 +52 19 24 *16.6 4737$\pm$30 -17.4 BCG   H$\beta$, [OIII] $\lambda$4959+5007, H$\alpha$, [SII]
5 1358+5529 13 58 49.2 +55 29 48 *16.5 3907$\pm$27 -17.1 BCG SBS 1358+554E H$\beta$, [OIII] $\lambda$4959+5007, H$\alpha$
6 1413+4934 14 13 19.2 +49 34 39 +16.8 3715$\pm$101 -16.7 BCG SBS 1413+495 H$\beta$, [OIII] $\lambda$4959+5007, H$\alpha$
7 1502+5307 15 02 31.8 +53 07 27 :14.7 5887$\pm$78 -19.8 ABS UGC 9688 Ca II, G, H$\beta$, MgI, NaD, H$\alpha$
8 1503+5121 15 03 40.0 +51 21 06 :15.6 3855$\pm$79 -18.0 SBN UGC 9702 H$\alpha$
9 1620+5744 16 20 15.4 +57 44 45 +16.8 4848$\pm$53 -17.3 BCG SBS 1620+577 H$\beta$, [OIII] $\lambda$4959+5007 ,H$\alpha$, [SII]
Background galaxies
10 0749+5651 07 49 23.2 +56 51 28 *16.9 14928$\pm$158 -19.6 ELG   [OII] $\lambda$3727, H$\alpha$, [NII] $\lambda$6584, [SII]
11 0749+5653 07 49 09.9 +56 53 08 *15.9 14136$\pm$110 -20.5 ABS+ELG MCG +10-12-007 Ca II, G, H$\beta$, MgI, Ca,Fe 5269
12 0751+5642 07 51 40.3 +56 42 40 *16.8 8436$\pm$306 -18.5 ABS MCG +09-13-092 Ca II, G, H$\beta$, MgI, Ca,Fe 5269
13 0751+5650 07 51 48.0 +56 50 36 *16.7 13840$\pm$135 -19.6 ABS NGC 2458 Ca II, G, H$\beta$, MgI
14 0752+5649 07 52 28.9 +56 49 14 *16.4 8681$\pm$90 -18.9 ABS+ELG NGC 2462 Ca II, G, H$\beta$, MgI, Ca,Fe 5269, [OIII] $\lambda$5007
15 1036+4910 10 36 37.5 +49 10 51 *15.5 8687$\pm$11 -19.8 ELG MCG08-20-009 H$\alpha$, [NII] $\lambda$6584, [SII]
16 1037+4932 10 37 56.1 +49 32 41 *17.5 13051$\pm$149 -18.7 ELG HS 1037+4932 [OIII] $\lambda$5007, H$\alpha$, [NII] $\lambda$6584, [SII]
17 1037+4948 10 37 02.0 +49 48 49 *15.7 13457$\pm$191 -20.6 Sy? M08-20-012 [OII] $\lambda$3727, [OIII] $\lambda$4959+5007 ,H$\alpha$, [NII] $\lambda$6584, [SII]
18 1039+4938 10 39 35.2 +49 38 44 *17.0 13386$\pm$84 -19.3 ABS NPM1+49.0176 G, H$\beta$, MgI, NaD, H$\alpha$
19 1130+4933 11 30 33.7 +49 33 45 *15.6 3191$\pm$68 -17.5 BCG UGC 6538 H$\beta$, [OIII] $\lambda$4959+5007, H$\alpha$, [SII]
20 1222+6117 12 22 36.1 +61 17 25 *16.9 18948$\pm$78 -20.1 ABS   H$\beta$, MgI, NaD, H$\alpha$
21 1342+5923 13 42 49.1 +59 23 58 *18.3 21900$\pm$36 -19.0 ELG   [OII] $\lambda$3727, H$\beta$, [OIII] $\lambda$4959+5007 ,H$\alpha$
22 1401+4902 14 01 44.9 +49 02 14 +17.1 25360$\pm$240 -20.5 ABS NPM1G+49.0268 H$\beta$, MgI, Ca,Fe 5269, NaD 5890-5896
23 1401+4907 14 01 20.2 +49 07 17 *17.1 22585$\pm$108 -20.3 ABS   Ca,Fe 5269, NaD 5890-5896
24 1430+5242 14 30 48.6 +52 42 22 *17.6 13405$\pm$27 -18.7 BCG   H$\beta$, [OIII] $\lambda$4959+5007, H$\alpha$
25 1448+5233 14 48 06.9 +52 33 36 *16.7 8990$\pm$18 -18.7 SBN   H$\beta$, [OIII] $\lambda$5007, H$\alpha$, [NII] $\lambda$6584
26 1448+5240 14 48 24.6 +52 40 28 *17.6 28437$\pm$30 -20.3 Sy?   [OIII] $\lambda$4959+5007
27 1453+5239 14 53 03.9 +52 39 31 *18.6 40705$\pm$51 -20.1 ELG   H$\beta$, [OIII] $\lambda$4959+5007
a Hubble constant H0 = 75 km s-1Mpc-1 is accepted.
Notes: 0916+5417 -- companion of BCG SBS 0916+543, which is not in the studied BCG sample;
1120+5838 -- companion of BCG SBS 1120+586, which is not in our sample;
1242+5458 -- companion of SBS 1242+549; 1317+5219 -- companion of BCG SBS 1317+523A;
1358+5529 -- BCG SBS 1358+554E itself; 1413+4934 -- BCG SBS 1413+495 itself;
1502+5307 -- companion of BCG SBS 1503+531; 1503+5121 -- companion of BCG SBS 1504+514N;
1620+5744 -- BCG SBS 1620+577 itself.



  \begin{figure} \par\includegraphics[width=13cm,clip]{MS10617apf1.eps} \end{figure} Figure A.1: Spectra of observed SBS BCGs and discovered real neighbours.


  \begin{figure} \par\includegraphics[width=13cm,clip]{MS10617apf2.eps} \end{figure} Figure A.2: Spectra of observed background galaxies.


  \begin{figure} \par\includegraphics[width=13cm,clip]{MS10617apf3.eps} \end{figure} Figure A.3: Spectra of observed background galaxies.

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