2014MNRAS.445..630P

Query : 2014MNRAS.445..630P

2014MNRAS.445..630P - Mon. Not. R. Astron. Soc., 445, 630-647 (2014/November-3)

The properties of early-type galaxies in the Ursa Major cluster.

PAK M., REY S.-C., LISKER T., LEE Y., KIM S., SUNG E.-C., JERJEN H. and CHUNG J.

Abstract (from CDS):

Using SDSS-DR7 and NASA/IPAC Extragalactic Database spectroscopic data, we identify 166 galaxies as members of the Ursa Major cluster with Mr < -13.5 mag. We morphological classify all galaxies by means of carefully inspecting g-, r-, i-band colour and monochromatic images. We show that the Ursa Major cluster is dominated by late-type galaxies, but also contains a significant number of early-type galaxies, particularly in the dwarf regime. We present further evidence for the existence of several subgroups in the cluster, consistent with previous findings. The early-type fraction is found to correlate with the mass of the subgroup. We also investigate environmental effects by comparing the properties of the Ursa Major early-type dwarf galaxies to those of the Virgo cluster. In contrast to the Virgo, the red sequence of the Ursa Major cluster is only sparsely populated in the optical and ultraviolet colour-magnitude relations. It also shows a statistically significant gap between -18 < Mr < -17 mag, i.e. the Ursa Major cluster lacks early-type dwarf galaxies at the bright end of their luminosity function. We discover that the majority of early-type dwarf galaxies in the Ursa Major cluster have blue cores with hints of recent or ongoing star formation. We suggest that gravitational tidal interactions can trigger central blue star-forming regions in early-type dwarfs. After that, star formation would only fade completely when the galaxies experience ram-pressure stripping or harassment, both of which are nearly absent in the Ursa Major cluster.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): galaxies: clusters: individual: Ursa Major - galaxies: dwarf - galaxies: evolution - galaxies: structure

VizieR on-line data: <Available at CDS (J/MNRAS/445/630): table2.dat>

Simbad objects: 179

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Number of rows : 179
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 2MASX J03262503-3707417 GiC 03 26 25.0085720520 -37 07 41.543028444   16.09       ~ 39 0
2 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 1827 0
3 Z 268-12 AG? 11 17 00.322 +50 35 04.69   15.4       ~ 10 0
4 NGC 3631 AG? 11 21 02.8871865144 +53 10 10.415331660   11.0       ~ 360 1
5 UGC 6399 AG? 11 23 23.2200537264 +50 53 33.503083728   14.9       ~ 108 0
6 NGC 3657 H2G 11 23 55.5870997368 +52 55 15.535718220   13.1       ~ 69 0
7 UGC 6446 GiC 11 26 40.4656762968 +53 44 48.012539280   14.5       ~ 156 0
8 NGC 3718 Sy2 11 32 34.8571790688 +53 04 04.520222040   11.35 10.61     ~ 384 1
9 NGC 3726 GiG 11 33 21.1367545656 +47 01 45.280222428   11.11   10.02   ~ 354 0
10 NGC 3729 GiP 11 33 49.321 +53 07 31.79   12.2       ~ 206 1
11 NGC 3733 AG? 11 35 01.6242268032 +54 51 01.688019408           ~ 87 1
12 NGC 3769 GiP 11 37 44.0727836208 +47 53 34.782808956   11.7       ~ 183 0
13 LEDA 2458152 AG? 11 37 44.428 +54 02 44.74           ~ 9 0
14 MCG+08-21-077 GiP 11 37 50.277 +47 52 53.98   14.7       ~ 40 0
15 UGC 6611 AG? 11 38 51.508 +43 09 56.37   15.4       ~ 16 0
16 2MASX J11390927+4641152 GiC 11 39 09.2306557800 +46 41 14.611523964           ~ 6 0
17 NGC 3782 GiG 11 39 20.680 +46 30 48.20   13.1       ~ 108 0
18 SDSS J113930.28+432428.5 AG? 11 39 30.283 +43 24 28.53           ~ 5 0
19 LEDA 2472082 AG? 11 39 48.414 +54 31 16.05           ~ 6 0
20 LEDA 2284287 GiC 11 39 48.686 +46 37 11.47           ~ 8 0
21 UGC 6628 AG? 11 40 05.7497793984 +45 56 31.750795896   14.6       ~ 81 0
22 SDSS J114035.57+460727.5 G 11 40 35.388 +46 07 27.81           ~ 3 0
23 Z 242-75 AG? 11 41 21.958 +46 23 35.52   15.4       ~ 11 0
24 UGC 6667 GiC 11 42 26.309 +51 35 52.82   14.8       ~ 120 0
25 UGC 6685 GiC 11 43 31.13208 +55 28 43.9068   16.0       ~ 20 0
26 UGC 6713 AG? 11 44 24.918 +48 50 07.84   15.5       ~ 38 0
27 LEDA 2318533 AG? 11 45 25.587 +48 29 07.53           ~ 7 0
28 NGC 3850 GiC 11 45 35.6792908103 +55 53 12.850289447   14.4       ~ 73 0
29 NGC 3870 GiG 11 45 56.634 +50 11 59.66   13.2       ~ 147 1
30 NGC 3877 GiG 11 46 07.782 +47 29 40.20   11.8       ~ 324 0
31 LEDA 2461968 AG? 11 46 13.444 +54 10 34.32           ~ 10 0
32 LEDA 2440363 AG? 11 46 28.281 +53 24 43.48           ~ 9 0
33 LEDA 2515483 GiC 11 46 34.074 +55 49 16.98           ~ 14 0
34 LEDA 2452508 AG? 11 47 51.357 +53 50 48.00           ~ 11 0
35 UGC 6773 AG? 11 48 00.48 +49 48 29.7   15.2       ~ 51 0
36 SDSS J114820.16+562045.7 AG? 11 48 20.163 +56 20 45.86           ~ 5 0
37 UGC 6776 AG? 11 48 35.698 +43 43 15.08   16.5       ~ 19 0
38 NGC 3893 GiP 11 48 38.207 +48 42 38.84   11.23 10.67     ~ 369 1
39 LEDA 2340722 AG? 11 48 45.155 +49 21 29.65           ~ 6 0
40 LEDA 2300734 AG? 11 48 55.4798918976 +47 34 57.961611228           ~ 8 0
41 NGC 3896 GiP 11 48 56.382 +48 40 28.79   14.05 13.57     ~ 87 0
42 NGC 3898 LIN 11 49 15.370 +56 05 03.66   11.7       ~ 310 1
43 SDSS J114929.66+560154.6 AG? 11 49 29.602 +56 01 54.13           ~ 6 0
44 LEDA 2243722 AG? 11 49 30.923 +44 24 33.20           ~ 5 0
45 NGC 3906 AG? 11 49 40.496 +48 25 33.46   14.1       ~ 95 0
46 LEDA 2399182 GiC 11 49 54.453 +51 44 10.99   17.0       ~ 24 0
47 UGC 6805 AG? 11 50 12.187 +42 04 29.82   14.20       ~ 60 0
48 NGC 3913 AG? 11 50 38.9407040280 +55 21 13.894641396   14.2       ~ 159 0
49 NGC 3917 GiP 11 50 45.4481861760 +51 49 27.919475076   12.5       ~ 188 0
50 UGC 6818 AG? 11 50 46.9776888960 +45 48 26.384111676   14.6       ~ 82 0
51 UGC 6816 GiC 11 50 47.70 +56 27 21.1   15.1       ~ 71 0
52 Mrk 1460 EmG 11 50 50.1094537992 +48 15 04.844817792   17.0       ~ 31 0
53 LEDA 2319584 AG? 11 50 56.11752 +48 31 53.6772           ~ 7 1
54 SDSS J115059.60+475749.5 AG? 11 50 59.605 +47 57 49.50           ~ 7 0
55 NGC 3922 GiG 11 51 13.4350927728 +50 09 24.771563208   13.8       ~ 54 0
56 NGC 3931 GiP 11 51 13.4504229480 +52 00 03.021500232   14.6       ~ 49 0
57 LEDA 2832085 AG? 11 51 27.010 +49 47 33.86           ~ 8 0
58 NGC 3928 AGN 11 51 47.6194275264 +48 40 59.261680020   13.1       ~ 174 0
59 LEDA 2431790 GiC 11 51 53.666 +53 05 58.23           ~ 10 0
60 UGC 6840 GiP 11 52 07.078 +52 06 28.57   15.6       ~ 59 0
61 LEDA 2314360 AG? 11 52 33.439 +48 17 34.89           ~ 8 0
62 NGC 3924 AG? 11 52 39.1580744976 +50 02 15.978510276   15.7       ~ 41 0
63 NGC 3938 GiG 11 52 49.4335936248 +44 07 14.697085116 10.80 10.90 10.38     ~ 533 1
64 LEDA 2272248 AG? 11 53 32.976 +45 54 21.90           ~ 7 0
65 NGC 3949 GiG 11 53 41.7311041896 +47 51 31.401451476   10.9       ~ 335 1
66 NGC 3953 GiG 11 53 49.0086582552 +52 19 36.475395312   11.08   9.71   ~ 359 0
67 UGC 6874 AG? 11 53 57.989 +50 10 48.89   15.6       ~ 9 0
68 LEDA 2284119 H2G 11 54 41.1914547048 +46 36 36.158901876           ~ 15 0
69 LEDA 2246960 AG? 11 54 57.957 +44 33 35.03           ~ 5 0
70 SDSS J115506.03+440611.7 AG? 11 55 05.988 +44 06 11.02           ~ 4 0
71 LEDA 37401 LSB 11 55 14.27 +44 09 02.3   16.7       ~ 14 0
72 UGC 6894 AG? 11 55 23.49432 +54 39 26.3880   15.6       ~ 51 0
73 Z 292-46 AG? 11 55 37.127 +56 15 11.50   15.6       ~ 13 0
74 NGC 3972 GiP 11 55 45.09048 +55 19 14.6460   13.14   11.94   ~ 217 1
75 LEDA 2260100 AG? 11 55 52.097 +45 09 45.32           ~ 7 0
76 SDSS J115603.70+522618.4 AG? 11 56 03.7055368488 +52 26 18.461465412           ~ 5 0
77 NGC 3982 Sy1 11 56 28.1445516072 +55 07 30.859586652   12.20 11.70 11.18   ~ 550 1
78 UGC 6917 GiG 11 56 28.76784 +50 25 42.0132   14.0       ~ 137 0
79 NGC 3985 GiG 11 56 42.1288367760 +48 20 03.129462132   13.0       ~ 114 0
80 UGC 6923 GiC 11 56 49.526 +53 09 37.21   13.90   12.96   ~ 148 0
81 UGC 6922 AG? 11 56 52.142 +50 49 01.16   15.4       ~ 59 0
82 LEDA 213911 AG? 11 57 03.089 +55 35 12.44           ~ 12 0
83 UGC 6930 EmG 11 57 17.3777198280 +49 17 00.669514488   14.2       ~ 129 0
84 NGC 3990 GiP 11 57 35.5746104280 +55 27 31.486195296   13.57   12.10   ~ 118 0
85 M 109 GiG 11 57 35.9631479640 +53 22 29.006082336   10.94   9.57   ~ 457 0
86 UGC 6940 AG? 11 57 47.584 +53 14 04.03   16.27   15.59   ~ 37 0
87 NGC 3998 Sy2 11 57 56.1334044408 +55 27 12.922443432   11.64 12.10 10.09   ~ 643 2
88 MCG+08-22-048 GiC 11 58 11.556 +48 52 49.79   16       ~ 14 0
89 LEDA 213915 AG? 11 58 13.689 +55 23 16.54   16.61   15.41   ~ 15 0
90 UGC 6956 AG? 11 58 25.96 +50 55 03.4   17       ~ 63 0
91 NGC 4013 GiG 11 58 31.417 +43 56 49.28   12.4       ~ 423 1
92 IC 749 GiP 11 58 34.0447608696 +42 44 02.528915820   13.4 12.52     ~ 132 0
93 LEDA 2832098 GiP 11 58 34.346 +53 20 43.68   17.27   16.05   ~ 13 0
94 NGC 4010 GiG 11 58 37.991 +47 15 40.72   13.1       ~ 153 0
95 UGC 6969 LSB 11 58 47.248 +53 25 32.55   15.07   14.23   ~ 65 0
96 LEDA 2832101 AG? 11 58 49.1732315208 +55 18 24.675281280   16.91   15.69   ~ 13 0
97 SDSS J115849.68+462753.0 AG? 11 58 49.681 +46 27 53.01           ~ 5 0
98 IC 750 AGN 11 58 52.2 +42 43 21   12.7 12.17     ~ 175 1
99 UGCA 259 AG? 11 58 53.8415 +45 44 01.797   17       ~ 19 0
100 Z 215-13 AG? 11 58 56.832 +44 11 34.64   15.7       ~ 9 0
101 UGC 6983 GiC 11 59 08.734 +52 42 28.03   14.5       ~ 173 0
102 NGC 4026 GiP 11 59 25.0914676128 +50 57 41.951225700   12.17       ~ 268 0
103 KUG 1156+426 PaG 11 59 29.23 +42 20 55.0   16.5       ~ 3 0
104 SDSS J115936.94+425715.7 AG? 11 59 36.939 +42 57 14.12           ~ 5 0
105 LEDA 2445913 AG? 11 59 43.2546451632 +53 36 38.834549064           ~ 7 0
106 LEDA 2832102 AG? 11 59 50.754 +50 29 55.19           ~ 10 0
107 UGC 6988 AG? 11 59 51.894 +55 39 55.12   16.5       ~ 16 0
108 LEDA 2442676 AG? 11 59 56.2427272680 +53 29 44.838408516           ~ 8 0
109 MCG+08-22-051 GiC 11 59 57.6822171528 +49 33 49.859931492   16       ~ 16 0
110 LEDA 166118 LSB 11 59 58.203 +44 43 07.77           ~ 11 0
111 LEDA 2206215 G 12 00 02.4336868032 +42 47 23.000334432           ~ 9 0
112 UGC 6992 GiP 12 00 19.017 +50 39 10.16   14.9       ~ 41 0
113 MCG+09-20-063 AG? 12 01 00.363 +55 01 29.07   16       ~ 12 0
114 UGC 6999 LSB 12 01 01.373 +49 54 48.01   18       ~ 15 0
115 LEDA 2832106 AG? 12 01 39.619 +55 12 31.16           ~ 10 0
116 LEDA 2492054 AG? 12 01 50.138 +55 08 42.28           ~ 10 0
117 UGC 7022 GiC 12 02 43.7191356096 +45 11 27.808631088   16.0       ~ 13 0
118 SDSS J120255.53+554905.7 AG? 12 02 55.535 +55 49 05.70           ~ 6 0
119 NGC 4051 Sy1 12 03 09.6101337312 +44 31 52.682601288   11.08 12.92 9.94   ~ 2165 1
120 2MASX J12032304+4344395 EmG 12 03 23.049 +43 44 39.58           ~ 18 0
121 SDSS J120330.53+550306.7 AG? 12 03 30.668 +55 03 06.03           ~ 6 0
122 NGC 4085 GiP 12 05 22.7304442992 +50 21 10.608113412   13.93 12.83     ~ 186 0
123 NGC 4088 GiP 12 05 34.2230093952 +50 32 21.064017876   11.2       ~ 407 1
124 SDSS J120549.54+504729.1 AG? 12 05 49.543 +50 47 29.18           ~ 5 0
125 UGC 7089 GiP 12 05 57.746 +43 08 36.08   14.40       ~ 112 1
126 SDSS J120558.90+425406.2 GiP 12 05 59.626 +42 54 09.09           ~ 8 0
127 NGC 4100 GiG 12 06 08.602 +49 34 56.32   11.7       ~ 252 0
128 UGC 7094 LSB 12 06 10.774 +42 57 20.85   15.6       ~ 60 0
129 NGC 4102 Sy2 12 06 23.0 +52 42 40   11.8       ~ 422 1
130 SDSS J120625.42+422607.2 AG? 12 06 25.428 +42 26 07.20           ~ 6 0
131 LEDA 166121 AG? 12 06 37.414 +54 45 54.64           ~ 10 0
132 NGC 4111 GiP 12 07 03.1334091672 +43 03 56.345868252 12.07 11.63 10.74     ~ 335 1
133 NGC 4117 Sy2 12 07 46.1195809200 +43 07 34.818483864   14.04       ~ 167 1
134 NGC 4118 EmG 12 07 52.844 +43 06 40.26   15.7       ~ 23 0
135 LEDA 2512985 AG? 12 08 10.725 +55 44 47.25           ~ 8 0
136 UGC 7129 EmG 12 08 55.0537236360 +41 44 27.144544812   14.3       ~ 75 0
137 NGC 4138 Sy2 12 09 29.8011417048 +43 41 06.864140004 12.46 12.29 11.32 10.82   ~ 410 1
138 NGC 4142 GiC 12 09 30.1608521208 +53 06 17.156506896   14.3       ~ 74 0
139 LEDA 2485185 AG? 12 09 31.736 +54 56 18.16           ~ 7 0
140 NGC 4143 LIN 12 09 36.0679174440 +42 32 03.031963368   13.04 12.08     ~ 233 0
141 UGC 7146 AG? 12 09 49.148 +43 14 04.88   17       ~ 14 0
142 UGC 7176 AG? 12 10 55.230 +50 17 15.19 16.44 16.60 15.81     ~ 28 1
143 LEDA 2815998 AG? 12 11 00.681 +52 49 56.90   16.5       ~ 15 0
144 NGC 4157 GiP 12 11 04.365 +50 29 04.85 12.48 12.15 11.35     ~ 353 2
145 MCG+08-22-082 GiP 12 11 22.566 +50 16 10.28   16       ~ 12 0
146 LEDA 2302037 AG? 12 11 34.997 +47 39 27.17           ~ 7 0
147 MCG+08-22-083 AG? 12 11 55.708 +46 58 54.59   17       ~ 12 0
148 LEDA 2236392 AG? 12 12 55.181 +44 05 27.36           ~ 6 0
149 SBSG 1210+537 AG? 12 12 55.8714787848 +53 27 37.648427688   16.5       ~ 17 0
150 UGC 7218 AG? 12 12 56.61 +52 15 49.8   15.0       ~ 44 0
151 NGC 4183 GiG 12 13 16.860 +43 41 53.77   13.5       ~ 202 0
152 LEDA 39055 EmG 12 14 02.4588226248 +53 45 17.525587212   18       ~ 83 0
153 SDSS J121537.12+441710.0 AG? 12 15 37.123 +44 17 10.08           ~ 5 0
154 NGC 4218 GiP 12 15 46.1787155088 +48 07 52.628679084   13.2       ~ 90 0
155 NGC 4217 GiG 12 15 50.900 +47 05 30.44   12.4       ~ 300 2
156 LEDA 2299404 AG? 12 15 51.563 +47 30 16.94           ~ 8 0
157 MCG+08-22-086 AG? 12 16 02.227 +46 43 58.18   16       ~ 12 0
158 NGC 4220 GiP 12 16 11.7271475400 +47 53 00.116701188   12.4       ~ 153 0
159 UGC 7301 GiC 12 16 42.081 +46 04 43.56   15.49       ~ 62 1
160 LEDA 2308426 AG? 12 17 31.959 +47 59 42.05           ~ 8 0
161 LEDA 2272312 AG? 12 18 40.1439219360 +45 54 34.929984744           ~ 9 0
162 SDSS J121915.08+444801.8 AG? 12 19 15.081 +44 48 01.83           ~ 6 0
163 LEDA 166129 AG? 12 19 33.188 +47 27 05.50           ~ 17 0
164 UGC 7391 AG? 12 20 16.243 +45 54 30.43   16.5       ~ 13 0
165 UGC 7392 AG? 12 20 17.493 +48 08 15.66   16.5       ~ 23 0
166 UGC 7401 LSB 12 20 48.421 +47 49 33.32   16.5       ~ 23 0
167 LEDA 2429780 AG? 12 23 08.044 +53 01 20.24           ~ 8 0
168 NGC 4346 GiG 12 23 27.9622537560 +46 59 37.642074396   12.3       ~ 113 0
169 NGC 4389 GiG 12 25 35.098 +45 41 04.81   12.64   11.46   ~ 147 0
170 NAME Virgo Cluster ClG 12 26 32.1 +12 43 24           ~ 6644 0
171 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7195 3
172 NAME LOCAL SUPERCL SCG 12 31 +12.4           ~ 519 0
173 LEDA 2251075 AG? 12 31 06.061 +44 44 49.09           ~ 7 0
174 NGC 5353 GiP 13 53 26.6998 +40 16 58.872   11.8   10.57   ~ 288 1
175 HCG 68 CGG 13 53 40.9 +40 19 07     12.4     ~ 113 0
176 NAME NGC 5846 Group GrG 15 05 47.0 +01 34 25           ~ 151 0
177 NAME Ursa Major Cluster ClG 15 08.8 +67 07           ~ 410 0
178 NAME NGC 3992 Group ? ~ ~           ~ 4 0
179 NAME Local Group GrG ~ ~           ~ 8390 0

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