2012MNRAS.423..422L

Query : 2012MNRAS.423..422L

2012MNRAS.423..422L - Mon. Not. R. Astron. Soc., 423, 422-436 (2012/June-2)

Star formation activities in early-type brightest cluster galaxies.

LIU F.S., MAO S. and MENG X.M.

Abstract (from CDS):

We identify a total of 120 early-type brightest cluster galaxies (BCGs) at 0.1 < z < 0.4 in two recent large cluster catalogues selected from the Sloan Digital Sky Survey (SDSS). They are selected with strong emission lines in their optical spectra, with both Hα and [O II]λ3727 line emission, which indicates significant ongoing star formation. They constitute about ∼ 0.5 per cent of the largest, optically selected, low-redshift BCG sample, and the fraction is a strong function of cluster richness. Their star formation history can be well described by a recent minor and short starburst superimposed on an old stellar component, with the recent episode of star formation contributing on average only less than 1 per cent of the total stellar mass. We show that the more massive star-forming BCGs in richer clusters tend to have higher star formation rate (SFR) and specific SFR (SFR per unit galaxy stellar mass). We also compare their statistical properties with a control sample selected from X-ray luminous clusters, and show that the fraction of star-forming BCGs in X-ray luminous clusters is almost one order of magnitude larger than that in optically selected clusters. BCGs with star formation in cooling flow clusters usually have very flat optical spectra and show the most active star formation, which may be connected with cooling flows.

Abstract Copyright: 2012 College of Physical Science and Technology, Shenyang Normal University Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): galaxies: clusters: general - galaxies: elliptical and lenticular, cD - galaxies: star formation

VizieR on-line data: <Available at CDS (J/MNRAS/423/422): table1.dat>

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 CAIRNS J004721.29+005239.7 BiC 00 47 21.2770315512 +00 52 39.568869084           ~ 2 0
2 SDSS J015435.88+002641.5 rG 01 54 35.8865987088 +00 26 41.562591864           ~ 4 0
3 SDSS J024253.64-065742.1 BiC 02 42 53.642 -06 57 42.17           ~ 5 0
4 SDSS J035002.13+000359.6 BiC 03 50 02.1408961272 +00 03 59.646304728           ~ 3 0
5 LEDA 4009541 BiC 08 06 47.8157917464 +49 47 26.280372516           ~ 4 0
6 7C 080418.60+340933.00 Bla 08 07 30.749 +34 00 41.70       15.8   ~ 20 1
7 2MASX J08085511+4649090 BiC 08 08 55.1168014344 +46 49 09.075406800           ~ 3 0
8 SDSS J081728.11+065903.5 BiC 08 17 28.1181996600 +06 59 03.603028992           ~ 2 0
9 SDSS J083932.87+271554.3 BiC 08 39 32.8793637216 +27 15 54.351637380           ~ 2 0
10 2MASX J08421102+5955257 BiC 08 42 11.0023839648 +59 55 25.602334248           ~ 9 0
11 NVSS J085410+190702 rG 08 54 11.1941542128 +19 07 01.964587872           ~ 4 0
12 SDSS J090208.10+371550.9 BiC 09 02 08.104 +37 15 50.94           ~ 2 0
13 SDSS J090940.61+105005.4 BiC 09 09 40.612 +10 50 05.43           ~ 5 0
14 SDSS J091413.84+030651.8 Sy1 09 14 13.8441082056 +03 06 51.880007088   18.56 17.90     ~ 5 0
15 FIRST J091728.6+074232 rG 09 17 28.6605479592 +07 42 32.320935468           ~ 8 0
16 SDSS J092018.77+370618.3 BiC 09 20 18.773 +37 06 18.35           ~ 8 0
17 2MASX J09222638+5153561 BiC 09 22 26.4210019464 +51 53 56.098589136           ~ 6 0
18 2MASX J09224368+3514479 BiC 09 22 43.6990684848 +35 14 48.232681908           ~ 5 0
19 SDSS J092524.11+172000.4 rG 09 25 24.1179077712 +17 20 00.374543772           ~ 4 0
20 2MASX J09260927+6704080 BiC 09 26 09.3627436056 +67 04 07.912668864           ~ 5 0
21 SDSS J092645.25+293409.6 BiC 09 26 45.2633837112 +29 34 09.530746428           ~ 2 0
22 SDSS J092954.27+002753.0 AGN 09 29 54.278 +00 27 53.00           ~ 4 0
23 SDSS J093015.39+251327.7 BiC 09 30 15.3925283280 +25 13 27.727571424           ~ 3 0
24 SDSS J094037.20+202029.8 BiC 09 40 37.2003291168 +20 20 29.841038376           ~ 2 0
25 SDSS J095948.66+123823.5 BiC 09 59 48.6710270976 +12 38 23.508452076           ~ 2 0
26 SDSS J100111.01+335755.7 BiC 10 01 11.015 +33 57 55.79           ~ 2 0
27 SDSS J100319.01+062325.6 BiC 10 03 19.0244094336 +06 23 25.530903636           ~ 2 0
28 SDSSCGB 31502.1 BiC 10 07 52.6190194632 +27 30 11.610864756           ~ 9 0
29 2MASX J10165232+1358396 BiC 10 16 52.3431817008 +13 58 39.745020396           ~ 3 0
30 ZwCl 1021+0426 ClG 10 23 39.0 +04 11 14   15.6 17.95     ~ 297 0
31 NVSS J102339+041115 rG 10 23 39.634 +04 11 10.66   18.6       ~ 30 0
32 SDSS J102459.92+395634.4 BiC 10 24 59.9228729640 +39 56 34.410957324           ~ 2 0
33 LEDA 2307843 BiC 10 27 26.0377447488 +47 57 57.970815516           ~ 11 0
34 SDSS J102831.75+151511.6 BiC 10 28 31.752 +15 15 11.68           ~ 5 0
35 SDSS J103545.49+152435.2 BiC 10 35 45.4898035512 +15 24 35.213186700           ~ 1 0
36 SDSS J104933.37+240903.7 BiC 10 49 33.3654709776 +24 09 03.927405528           ~ 3 0
37 SDSS J104949.84+054629.8 BiC 10 49 49.8509615640 +05 46 29.791536924           ~ 3 0
38 SDSS J105021.83+371052.7 BiC 10 50 21.8347810824 +37 10 52.817153628           ~ 3 0
39 SDSS J105158.82+082222.6 BiC 10 51 58.8221680128 +08 22 22.687875948           ~ 1 0
40 SDSS J110622.69+091352.0 BiC 11 06 22.6918183224 +09 13 52.068911412           ~ 3 0
41 SDSS J110815.64+231147.9 BiC 11 08 15.6393218976 +23 11 47.902207200           ~ 4 0
42 2MASX J11132052+1735409 BiC 11 13 20.526 +17 35 40.96   19.1       ~ 22 0
43 ACO 1204 ClG 11 13 32.2 +17 35 40           ~ 101 0
44 SDSS J111613.46+570112.3 BiC 11 16 13.4655273504 +57 01 12.426523500           ~ 4 0
45 SDSS J112154.55+305515.9 BiC 11 21 54.5502969456 +30 55 15.958709292           ~ 3 0
46 2MASS J11253684+5921556 QSO 11 25 36.8014638168 +59 21 55.540328112     19.590     ~ 3 0
47 SDSS J112612.81-005130.7 BiC 11 26 12.810 -00 51 30.78           ~ 1 0
48 SDSS J112714.93+482221.0 BiC 11 27 14.9322429720 +48 22 21.002908044           ~ 2 0
49 2MASX J11352068+4911277 BiC 11 35 20.6659709664 +49 11 27.721787820           ~ 4 0
50 2MASX J11392947+6810192 BiC 11 39 29.4227275728 +68 10 18.815462760           ~ 3 0
51 SDSS J114643.91+511224.3 BiC 11 46 43.9200429552 +51 12 24.476463576           ~ 5 0
52 LEDA 1688650 BiC 11 53 16.7835360216 +23 30 41.852061972           ~ 7 0
53 SDSS J120517.47+334941.4 BiC 12 05 17.4779288688 +33 49 41.491149132           ~ 2 0
54 NVSS J121225+460155 rG 12 12 25.168 +46 01 52.26           ~ 7 0
55 NVSS J121258+272704 rG 12 12 59.135 +27 27 04.56   20.0       ~ 16 0
56 2dFGRS TGN182Z228 BiC 12 22 05.0112721632 -01 36 09.893932848   18.567   17.017   ~ 6 0
57 2MASX J12304409+3633041 BiC 12 30 44.1157028136 +36 33 04.440907584           ~ 8 0
58 NVSS J123125+193139 rG 12 31 25.192 +19 31 36.67   21.65 20.50     ~ 5 0
59 LEDA 2208553 BiC 12 32 57.7624376256 +42 54 02.577012984           ~ 9 0
60 NVSS J124445+331427 rG 12 44 45.2150602464 +33 14 27.258861408           ~ 7 0
61 FIRST J124620.1+325437 rG 12 46 20.1559861944 +32 54 37.917546300           ~ 8 0
62 SDSS J125120.29+482129.9 BiC 12 51 20.2902225528 +48 21 29.966626944           ~ 2 0
63 2MASX J12522998+0358036 BiC 12 52 29.9847680976 +03 58 03.771687216           ~ 4 0
64 SDSS J125438.13+070149.2 BiC 12 54 38.133 +07 01 49.27           ~ 2 0
65 SDSS J131332.74+320204.6 BiC 13 13 32.747 +32 02 04.69           ~ 2 0
66 NVSS J131451+383420 rG 13 14 51.6895345920 +38 34 18.752101104           ~ 8 0
67 4C 04.45 rG 13 24 19.676 +04 19 07.05   19.5       ~ 31 1
68 NVSS J132521+035850 rG 13 25 22.0125643392 +03 58 48.934756596           ~ 9 1
69 SDSS J132906.23-005341.7 BiC 13 29 06.2314175328 -00 53 41.711210988           ~ 1 0
70 FIRST J133918.6+335100 rG 13 39 18.607 +33 51 00.50           ~ 7 0
71 LEDA 2158812 BiC 13 53 21.5315560704 +39 59 09.666032784           ~ 3 0
72 SDSS J135718.84+303544.1 BiC 13 57 18.8492679336 +30 35 44.173520268           ~ 4 0
73 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 727 1
74 NAME SMM J14010+0252 Sy1 14 01 02.0819944848 +02 52 42.426538140   19.3       ~ 47 2
75 FIRST J140149.8+163001 rG 14 01 49.8609001824 +16 30 01.820501352           ~ 7 0
76 SDSS J140305.19+100321.9 BiC 14 03 05.2020608976 +10 03 21.950560656           ~ 2 0
77 LEDA 3822785 BiC 14 15 16.256 +24 01 15.07   18.6       ~ 5 0
78 [VV2003c] J141835.5+020508 Sy1 14 18 35.5257858240 +02 05 07.649331396     20.24     ~ 3 0
79 2MASX J14183761+3746243 Sy1 14 18 37.6584749304 +37 46 24.529746288     14.50     ~ 18 0
80 GAMA 238716 BiC 14 20 15.2730032520 +01 34 12.182419920           ~ 7 0
81 SDSS J142257.74+272039.2 BiC 14 22 57.7398703272 +27 20 39.216812568           ~ 3 0
82 NVSS J142355+262622 rG 14 23 55.451 +26 26 23.22   19.0       ~ 16 0
83 NVSS J142424+251427 rG 14 24 24.275 +25 14 27.61           ~ 9 0
84 FIRST J142549.4+105409 rG 14 25 49.4594051232 +10 54 09.031412988           ~ 4 0
85 2dFGRS TGN210Z239 rG 14 33 40.92407 -01 45 03.6040   18.647   16.876   ~ 5 0
86 2MASX J14403559+1507482 BiC 14 40 35.5993630872 +15 07 48.095947848           ~ 6 0
87 2MASX J14462124+3815262 BiC 14 46 21.2456144736 +38 15 26.015545332           ~ 3 0
88 DES J144726.02+082825.1 BLL 14 47 26.021 +08 28 25.12           ~ 8 0
89 SDSS J145213.35+053857.9 BiC 14 52 13.3577056224 +05 38 57.949300428           ~ 2 0
90 NVSS J145715+222036 rG 14 57 15.0998550864 +22 20 34.320909444   18.5   16.82   ~ 25 1
91 ZwCl 1455+2232 ClG 14 57 15.2 +22 20 30     18.62 20.04   ~ 309 0
92 SDSS J145817.23+505743.9 BiC 14 58 17.2353660696 +50 57 43.905009024           ~ 2 0
93 2MASX J14583068+5802164 Sy2 14 58 30.689 +58 02 16.47   20.80 19.70     ~ 5 0
94 2MASX J15000909+2139257 BiC 15 00 09.0359298936 +21 39 25.916227416           ~ 8 0
95 ClG J1504-0248 ClG 15 04 07.4 -02 48 15           ~ 186 0
96 [VV2006] J150407.5-024816 Bla 15 04 07.51896914 -02 48 16.6232484   18.53 18.08     ~ 60 2
97 SDSS J151303.77+252550.8 BiC 15 13 03.7653297960 +25 25 50.845268640           ~ 1 0
98 SDSS J151815.67+584116.0 BiC 15 18 15.6788695656 +58 41 15.973880532           ~ 2 0
99 2MASX J15194875+2621472 BiC 15 19 48.7929638856 +26 21 47.755266552           ~ 7 0
100 SDSS J152228.05+054514.7 BiC 15 22 28.0557475776 +05 45 14.746713372           ~ 3 0
101 LEDA 1900245 Bla 15 32 53.780 +30 20 59.41   19.1   15.7 17.819 ~ 155 1
102 2MASX J15391536+4229510 BiC 15 39 15.3543730224 +42 29 50.458239636           ~ 2 0
103 SDSS J154119.71+184902.8 BiC 15 41 19.7172299136 +18 49 02.830685520           ~ 3 0
104 SDSS J154606.58+120650.6 BiC 15 46 06.5855088552 +12 06 50.583658392           ~ 3 0
105 FIRST J160401.3+295314 rG 16 04 01.3756439256 +29 53 14.966703744           ~ 4 0
106 NVSS J161223+113531 rG 16 12 23.288 +11 35 31.68           ~ 5 0
107 SDSS J161621.65+441914.9 BiC 16 16 21.6531742944 +44 19 14.859624252           ~ 1 0
108 SDSS J162044.19+125214.8 BiC 16 20 44.1942270432 +12 52 14.889211680           ~ 1 0
109 SDSS J162045.21+261909.1 BiC 16 20 45.218 +26 19 09.19           ~ 2 0
110 SDSS J162125.94+243739.3 BiC 16 21 25.9440750264 +24 37 39.363082716           ~ 5 0
111 SDSS J162300.36+475801.4 BiC 16 23 00.3588902808 +47 58 01.493967828           ~ 1 0
112 2MASX J16230943+4404414 BiC 16 23 09.4172324712 +44 04 41.701302084           ~ 8 0
113 SDSS J163936.36+370501.4 BiC 16 39 36.3548129832 +37 05 01.408592040           ~ 4 0
114 LEDA 2271617 BiC 16 44 15.6302678544 +45 51 49.554020124           ~ 4 0
115 SDSS J170045.92+222355.0 BiC 17 00 45.9211026768 +22 23 54.999769344           ~ 1 0
116 LEDA 2531922 Sy1 17 15 27.8871710016 +56 17 18.848164272     19.94     ~ 2 0
117 NVSS J171852+314415 rG 17 18 52.024 +31 44 16.37           ~ 9 0
118 ClG J1720+2638 ClG 17 20 09.6 +26 37 35           ~ 284 0
119 NVSS J172010+263731 rG 17 20 10.040 +26 37 32.06   20.4       ~ 33 2
120 SDSS J172422.98+273242.4 BiC 17 24 22.9826799912 +27 32 42.498139560           ~ 1 0
121 LEDA 1025774 BiC 21 01 01.3260761328 -07 00 19.021420620           ~ 3 0
122 SDSS J210334.78+090715.0 BiC 21 03 34.7815362096 +09 07 15.130433856           ~ 3 0
123 NVSS J212940+000522 rG 21 29 39.953 +00 05 21.16           ~ 36 0
124 ClG J2129+0005 ClG 21 29 40.5 +00 05 47           ~ 308 0
125 SDSS J215403.29+000950.4 BiC 21 54 03.289 +00 09 50.59           ~ 2 0
126 NVSS J232315+005929 rG 23 23 16.0976624448 +00 59 22.960495320           ~ 6 0
127 1RXS J234106.1+001836 ClG 23 41 06.3 +00 18 53           ~ 17 1
128 ICRF J234106.9+001833 BLL 23 41 06.90995266 +00 18 33.3367251   20.26 19.46 15.6   ~ 54 2

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