2008MNRAS.388.1152P

Query : 2008MNRAS.388.1152P

2008MNRAS.388.1152P - Mon. Not. R. Astron. Soc., 388, 1152-1160 (2008/August-2)

Star formation in galaxies falling into clusters along supercluster-scale filaments.

PORTER S.C., RAYCHAUDHURY S., PIMBBLET K.A. and DRINKWATER M.J.

Abstract (from CDS):

With the help of a statistical parameter derived from optical spectra, we show that the current star formation rate of a galaxy, falling into a cluster along a supercluster filament, is likely to undergo a sudden enhancement before the galaxy reaches the virial radius of the cluster. From a sample of 52 supercluster-scale filaments of galaxies joining a pair of rich clusters of galaxies within the two-degree Field Redshift Survey region, we find a significant enhancement of star formation, within a narrow range between ∼2 and 3h–170 Mpc of the centre of the cluster into which the galaxy is falling. This burst of star formation is almost exclusively seen in the fainter dwarf galaxies (MB≥ -20). The relative position of the peak does not depend on whether the galaxy is a member of a group or not, but non-group galaxies have on average a higher rate of star formation immediately before falling into a cluster. From the various trends, we conclude that the predominant process responsible for this rapid burst is the close interaction with other galaxies falling into the cluster along the same filament, if the interaction occurs before the gas reservoir of the galaxy gets stripped off due to the interaction with the intracluster medium.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): galaxies: clusters: general - galaxies: evolution - galaxies: starburst - cosmology: observations - large-scale structure of Universe

Simbad objects: 85

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Number of rows : 85
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 ACO 2734 ClG 00 11 21.60 -28 51 16.6           ~ 156 0
2 ACO 2741 ClG 00 13 40.90 -32 29 16.1           ~ 6 0
3 APMCC 39 ClG 00 17 37.6 -31 28 14           ~ 5 0
4 APMCC 51 ClG 00 20 35.58 -33 56 40.8           ~ 5 0
5 ZwCl 0024+1652 ClG 00 26 35.6 +17 09 32     18.35     ~ 648 1
6 EDCC 445 ClG 00 28 33.00 -27 30 23.7           ~ 6 0
7 ACO 2780 ClG 00 30 04.61 -29 27 27.6           ~ 16 0
8 NAME SCULPTOR SUPERCL SCG 00 31.7 -29 49           ~ 43 1
9 NAME PSC-CET SUPERCL SCG 00 33 -21.0           ~ 67 2
10 EDCC 457 ClG 00 36 03.81 -26 05 29.3           ~ 7 0
11 ACO 2794 ClG 00 36 33 -31 01.5           ~ 12 0
12 APMCC 94 ClG 00 37 43.4 -30 50 59           ~ 4 0
13 EDCC 465 ClG 00 38 52.54 -27 16 37.5           ~ 4 0
14 ACO 2804 ClG 00 39 37.84 -28 54 22.2           ~ 23 0
15 ACO 2814 ClG 00 42 08.82 -28 32 08.8           ~ 15 0
16 ACO 2829 ClG 00 51 22.73 -28 31 39.3           ~ 34 0
17 EDCC 492 ClG 00 54 08.36 -30 59 40.9           ~ 4 0
18 ACO 118 ClG 00 55 43.9 -26 24 46           ~ 44 0
19 EDCC 511 ClG 00 58 20.28 -31 01 49.7           ~ 4 0
20 EDCC 517 ClG 01 02 35.86 -33 20 44.5           ~ 4 0
21 ACO 2878 ClG 01 10 01.77 -29 40 58.3           ~ 9 0
22 APMCC 167 ClG 01 23 30.9 -32 56 12           ~ 5 0
23 ACO 2915 ClG 01 28 57.00 -29 00 41.4           ~ 18 0
24 ACO S 160 ClG 01 30 11 -32 54.5           ~ 7 0
25 EDCC 581 ClG 01 35 31.71 -25 36 54.8           ~ 4 0
26 ACO 2943 ClG 01 48 15.8610 -31 55 39.648           ~ 14 0
27 ACO S 203 ClG 01 53 09.47 -33 36 56.9           ~ 6 0
28 ACO 2961 ClG 02 00 00.59 -31 14 13.8           ~ 6 0
29 ACO 2967 ClG 02 02 46.10 -28 17 22.4           ~ 7 0
30 ACO 2972 ClG 02 05 38.70 -27 06 42.4           ~ 8 0
31 ACO 2981 ClG 02 09 53.2 -27 23 15           ~ 8 0
32 APMCC 245 ClG 02 10 49.31 -33 11 09.9           ~ 3 0
33 ACO 2999 ClG 02 17 20.02 -28 21 53.9           ~ 4 0
34 ACO 3094 ClG 03 11 25.00 -26 55 52.2           ~ 64 0
35 ACO S 333 ClG 03 15 09.95 -29 14 37.4           ~ 17 0
36 ACO 1364 ClG 11 43 39.67 -01 44 41.8           ~ 61 0
37 ACO 1407 ClG 11 53 30.89 -01 44 04.4           ~ 23 0
38 ACO 1411 ClG 11 55 13.63 -00 31 34.6           ~ 19 0
39 ACO 1419 ClG 11 56 11.54 -00 12 37.0           ~ 21 0
40 ACO 1620 ClG 12 50 03.89 -01 32 26.7           ~ 54 0
41 ACO 1663 ClG 13 02 52.55 -02 31 04.0           ~ 112 0
42 NAME Shapley Supercluster SCG 13 06.0 -33 04           ~ 677 0
43 ACO 1692 ClG 13 12 15.30 -00 55 54.3           ~ 30 0
44 APMCC 721 ClG 21 51 44.61 -31 39 10.2           ~ 4 0
45 EDCC 57 ClG 21 56 59.27 -30 05 58.7           ~ 6 0
46 ACO 3837 ClG 22 09 12.94 -27 19 44.9           ~ 13 0
47 ACO 3844 ClG 22 13 30 -34 45.1           ~ 12 0
48 EDCC 119 ClG 22 16 20.64 -25 40 11.8           ~ 7 0
49 ACO 3854 ClG 22 17 45.72 -35 43 31.4           ~ 75 0
50 EDCC 128 ClG 22 18 56.60 -28 14 08.4           ~ 4 0
51 ACO 3878 ClG 22 26 50 -31 56.7           ~ 5 0
52 ACO 3880 ClG 22 27 49.5 -30 34 40           ~ 104 2
53 EDCC 153 ClG 22 32 14.71 -31 13 45.3           ~ 7 0
54 ACO 3892 ClG 22 38 05.52 -30 40 31.1           ~ 5 0
55 APMCC 810 ClG 22 44 07.07 -35 15 37.3           ~ 3 0
56 EDCC 187 ClG 22 46 23.75 -34 01 52.4           ~ 4 0
57 ACO S 1064 ClG 22 49 15.16 -32 51 13.8           ~ 5 0
58 APMCC 827 ClG 22 50 03.69 -31 07 38.9           ~ 8 0
59 EDCC 202 ClG 22 50 21.71 -32 40 24.6           ~ 4 0
60 ACO 2493 ClG 22 50 34.28 -25 59 41.9           ~ 9 0
61 EDCC 215 ClG 22 53 20.96 -29 33 20.7           ~ 3 0
62 EDCC 217 ClG 22 53 39.37 -30 13 21.7           ~ 3 0
63 ACO S 1075 ClG 22 58 26 -30 44.9           ~ 5 0
64 APMCC 840 ClG 22 59 00.9 -30 50 31           ~ 4 0
65 EDCC 230 ClG 22 59 17.31 -30 51 05.8           ~ 5 0
66 ACO 3959 ClG 23 02 03.22 -33 26 51.1           ~ 9 0
67 EDCC 239 ClG 23 03 21.15 -33 36 17.5           ~ 4 0
68 APMCC 853 ClG 23 05 40.87 -30 47 17.1           ~ 6 0
69 ACO 3978 ClG 23 10 15.59 -28 39 16.1           ~ 8 0
70 ACO 2553 ClG 23 12 22.4 -24 56 40           ~ 14 0
71 ACO 3980 ClG 23 12 59.61 -28 23 16.2           ~ 5 0
72 APMCC 869 ClG 23 13 42.13 -30 54 29.2           ~ 4 0
73 EDCC 268 ClG 23 14 29.36 -26 27 14.5           ~ 3 0
74 AqrCC 47 ClG 23 17 31.78 -25 20 08.9           ~ 5 0
75 ACO 2601 ClG 23 26 44.3 -24 25 29           ~ 11 0
76 ACO 4009 ClG 23 30 34.82 -29 15 53.8           ~ 6 0
77 ACO 4012 ClG 23 31 45 -33 49.4           ~ 10 0
78 ACO 4011 ClG 23 31 57.91 -34 23 59.9           ~ 6 0
79 AK3 J233411.76-333944 ClG 23 34 12.32 -33 39 53.1           ~ 5 0
80 EDCC 321 ClG 23 36 07.14 -32 30 31.9           ~ 5 0
81 APMCC 917 ClG 23 41 33.4 -29 09 12           ~ 19 0
82 ACO 2660 ClG 23 45 18 -25 58.3           ~ 39 0
83 ACO S 1155 ClG 23 50 13.62 -29 00 32.1           ~ 11 0
84 EDCC 365 ClG 23 55 08.43 -32 44 25.6           ~ 9 0
85 NAME Local Group GrG ~ ~           ~ 9325 0

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