2006A&A...445..857P


Query : 2006A&A...445..857P

2006A&A...445..857P - Astronomy and Astrophysics, volume 445, 857-867 (2006/1-3)

The DPOSS II compact group survey: first spectroscopically confirmed candidates.

POMPEI E., DE CARVALHO R.R. and IOVINO A.

Abstract (from CDS):

This paper presents the results of a pilot redshift survey of 18 candidate compact groups from the distant DPOSS survey that extends to redshift ∼0.2 the available surveys of compact groups of galaxies, mainly Hickson Compact Groups and Southern Compact Groups. The goal of our survey was to confirm group membership via redshift information and to measure the characteristic parameters of a representative, albeit small, sample of DPOSS survey groups. Of the 18 candidates observed, seven are found to be indeed isolated compact groups, i.e. groups with 3 or more concordant members and with no neighbouring known cluster, while 7 are chance projection configurations on the sky. Three remaining candidates, despite having 3 or more concordant member galaxies, are located in the neighbourhood of known clusters, while another candidate turned out to be a dense sub-condensation within Abell 0952. The median redshift of our 7 confirmed groups is z ∼0.12, to be compared with a median redshift of 0.03 for the local sample of compact groups by Hickson. The typical group size is ∼50kpc, and the median radial velocity dispersion is 167km/s, while typical crossing times range from 0.005H0–1 to 0.03 H0–1 with a median value of 0.018H0–1, all similar to the values usually found in the literature for such structures in the local universe. The average mass-to-light ratio for our groups, M/LB, is 92h, higher than the value found for nearby Hickson compact groups but lower than that found for loose groups. Our results suggest that, once full redshift information for its members becomes available, the DPOSS sample will provide a reference sample to study the properties of compact groups beyond the local universe.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: general - techniques: spectroscopic

VizieR on-line data: <Available at CDS (J/A+A/445/857): table2.dat>

Simbad objects: 99

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Number of rows : 99
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 M 32 IG 00 42 41.825 +40 51 54.61 9.51 9.03 8.08     ~ 2098 2
2 SDSS J100353.65+190446.5 GiG 10 03 53.65392 +19 04 46.5600           ~ 3 0
3 PCG J1003+1904 A GiG 10 03 54.22 +19 05 02.1           ~ 2 0
4 PCG J1003+1904 CGG 10 03 55.26 +19 04 54.7           ~ 4 0
5 SDSS J100355.74+190454.2 GiG 10 03 55.74384 +19 04 54.2640           ~ 3 0
6 2MASX J10035698+1905014 GiG 10 03 56.9621800224 +19 05 01.491331524           ~ 2 0
7 ACO 952 ClG 10 13 43.2 +19 46 31           ~ 16 0
8 PCG J1013+1945 C GiG 10 13 44.87 +19 45 51.5           ~ 2 0
9 PCG J1013+1945 CGG 10 13 45.00 +19 45 41.0           ~ 7 0
10 PCG J1013+1945 A GiG 10 13 45.1930441104 +19 45 42.822089136           ~ 5 0
11 PCG J1013+1945 D GiG 10 13 45.84 +19 45 37.6           ~ 2 0
12 2MASX J10134691+1945312 GiG 10 13 46.8938158296 +19 45 30.566286324           ~ 4 0
13 PCG J1033+2253 D GiG 10 33 47.75 +22 53 34.2           ~ 2 0
14 2MASX J10334895+2253425 GiG 10 33 48.9712158288 +22 53 42.506910780           ~ 3 0
15 PCG J1033+2253 CGG 10 33 49 +22 53.4           ~ 2 0
16 2MASX J10334953+2253135 GiG 10 33 49.5173825520 +22 53 13.690279752           ~ 2 0
17 2MASX J10335026+2253155 GiG 10 33 50.2770047496 +22 53 15.133659036           ~ 2 0
18 PCG J1039+2749 CGG 10 39 58.5 +27 49 48           ~ 5 0
19 PCG J1039+2749 B GiG 10 39 58.52 +27 49 45.0           ~ 2 0
20 LEDA 1819077 GiG 10 39 58.9 +27 49 42           ~ 3 0
21 PCG J1039+2749 C GiG 10 39 59.13 +27 49 59.5           ~ 2 0
22 2MASX J10395932+2749344 GiG 10 39 59.326 +27 49 34.46           ~ 5 0
23 PCG J1043+2817 D GiG 10 43 37.83 +28 17 06.7           ~ 2 0
24 PCG J1043+2817 CGG 10 43 38 +28 17.2           ~ 2 0
25 2MASX J10433826+2817210 GiG 10 43 38.2534201512 +28 17 20.730525900           ~ 4 0
26 PCG J1043+2817 B GiG 10 43 38.994 +28 17 12.55           ~ 4 0
27 2MASX J10433947+2817050 GiG 10 43 39.4845292944 +28 17 04.981450668           ~ 2 0
28 PCG J1045+1758 C GiG 10 45 37.7908303104 +17 58 17.340769848           ~ 3 0
29 PCG J1045+1758 D GiG 10 45 37.9143600000 +17 58 44.825847924           ~ 3 0
30 PCG J1045+1758 CGG 10 45 38.7 +17 58 25           ~ 4 0
31 SDSS J104538.96+175807.3 GiG 10 45 38.9584545216 +17 58 07.392696528           ~ 4 0
32 2MASX J10453990+1758308 GiG 10 45 39.9200781216 +17 58 30.877945140           ~ 7 0
33 NSC J110830+201922 ClG 11 08 30.27 +20 19 22.0           ~ 2 0
34 2MASX J11093973+2033106 GiG 11 09 39.738 +20 33 10.66           ~ 3 0
35 PCG J1109+2033 D GiG 11 09 40.29 +20 33 13.3           ~ 2 0
36 PCG J1109+2033 C GiG 11 09 41.07 +20 33 35.5           ~ 2 0
37 PCG J1109+2033 CGG 11 09 41.21 +20 33 20.5           ~ 4 0
38 2MASX J11094265+2033296 GiG 11 09 42.6338574648 +20 33 29.740409928           ~ 5 0
39 2MASX J11423238+1407253 GiG 11 42 32.4027387072 +14 07 25.334157288           ~ 4 0
40 2MASX J11423286+1407283 GiG 11 42 32.8430246112 +14 07 28.110121644           ~ 3 0
41 PCG J1142+1407 CGG 11 42 33.2 +14 07 33           ~ 4 0
42 2MASX J11423369+1407263 GiG 11 42 33.7385848824 +14 07 26.872083408           ~ 3 0
43 2MASX J11423382+1407513 GiG 11 42 33.8481459168 +14 07 51.713765868           ~ 4 0
44 NSC J114317+135803 ClG 11 43 17.56 +13 58 02.8           ~ 3 0
45 2MASX J11433284+2154066 rG 11 43 32.842 +21 54 06.62       16.09   ~ 11 0
46 PCG J1143+2153 C GiG 11 43 32.8937780328 +21 53 57.485245308       17.17   ~ 6 0
47 2MASX J11433312+2153516 Sy2 11 43 33.1385564568 +21 53 51.110437020       16.07   ~ 7 0
48 2MASX J11433349+2154226 GiG 11 43 33.4883938824 +21 54 22.184124264       17.21   ~ 6 0
49 PCG J1143+2153 CGG 11 43 33.91 +21 53 56.7           ~ 11 0
50 NGC 4111 GiP 12 07 03.1334091672 +43 03 56.345868252 12.07 11.63 10.74     ~ 324 1
51 PCG J1211+1344 B GiG 12 11 57.29 +13 44 13.3           ~ 2 0
52 PCG J1211+1344 C GiG 12 11 57.77 +13 44 16.8           ~ 2 0
53 PCG J1211+1344 CGG 12 11 57.92 +13 44 21.4           ~ 3 0
54 2MASX J12115854+1344297 GiG 12 11 58.5594106200 +13 44 30.143843952           ~ 5 0
55 PCG J1211+1344 D GiG 12 11 58.65 +13 44 19.7           ~ 2 0
56 2MASX J12125192+2235304 AGN 12 12 51.9434526768 +22 35 30.158653092   17       ~ 8 0
57 LAMOST J121252.44+223514.3 GiG 12 12 52.4420816760 +22 35 14.325721872           ~ 3 0
58 PCG J1212+2235 CGG 12 12 52.51 +22 35 19.9           ~ 4 0
59 PCG J1212+2235 D GiG 12 12 52.55 +22 35 06.9           ~ 2 0
60 2MASX J12125336+2235264 LIN 12 12 53.3348879544 +22 35 26.650140036   17       ~ 7 0
61 LEDA 1488004 GiG 12 15 14.4226731408 +15 33 58.393080000           ~ 4 0
62 LEDA 1487959 GiG 12 15 15.067 +15 33 51.51           ~ 5 0
63 PCG J1215+1534 CGG 12 15 15.4 +15 33 58           ~ 4 0
64 LEDA 1487839 GiG 12 15 15.671 +15 33 35.16           ~ 4 0
65 2MASX J12151624+1534262 GiG 12 15 16.2539163792 +15 34 26.459873940           ~ 3 0
66 NSC J121528+153533 ClG 12 15 28.45 +15 35 32.7           ~ 2 0
67 PCG J1301+1915 B GiG 13 01 55.98 +19 15 06.3           ~ 2 0
68 LEDA 1585609 GiG 13 01 56.7768827736 +19 14 55.702480740           ~ 5 0
69 PCG J1301+1915 CGG 13 01 57.00 +19 15 11.0           ~ 4 0
70 2MASX J13015771+1915116 GiG 13 01 57.6954161304 +19 15 11.615367348           ~ 5 0
71 SDSS J130158.23+191521.2 GiG 13 01 58.2314571840 +19 15 21.189613536           ~ 4 0
72 PCG J1309+1553 B GiG 13 09 26.26 +15 54 07.7           ~ 2 0
73 PCG J1309+1553 C GiG 13 09 26.44 +15 54 12.2           ~ 2 0
74 2MASX J13092683+1554203 GiG 13 09 26.8759661856 +15 54 20.769048612           ~ 3 0
75 PCG J1309+1553 CGG 13 09 26.90 +15 53 58.6           ~ 3 0
76 PCG J1309+1553 D GiG 13 09 26.91 +15 53 37.8           ~ 2 0
77 PCG J1452+2759 CGG 14 52 23.29 +27 56 42.5           ~ 5 0
78 NVSS J145233+275758 rG 14 52 33.6 +27 57 54           ~ 66 1
79 Shk 219 GrG 14 52.6 +27 59           ~ 5 0
80 PCG J1452+2759 D GiG 14 52 38.65 +27 59 01.7           ~ 3 0
81 2MASX J14523895+2758499 GiG 14 52 38.994 +27 58 50.80           ~ 5 0
82 2MASX J14523940+2759229 GiG 14 52 39.4041094896 +27 59 23.334438552           ~ 3 0
83 PCG J1452+2759 B GiG 14 52 40.31 +27 58 48.2           ~ 3 0
84 PCG J1549+2756 B GiG 15 49 29.0788256112 +27 56 42.119208060           ~ 3 0
85 PCG J1549+2756 CGG 15 49 30.1 +27 56 19           ~ 4 0
86 2MASX J15493031+2756213 GiG 15 49 30.2804412720 +27 56 20.773081032           ~ 4 0
87 PCG J1549+2756 D GiG 15 49 31.41 +27 56 46.8           ~ 2 0
88 PCG J1549+2756 C GiG 15 49 31.470 +27 56 40.68           ~ 5 0
89 PCG J1617+2758 CGG 16 17 54.00 +27 58 27.0           ~ 3 0
90 2MASX J16175407+2758140 GiG 16 17 54.0559937232 +27 58 14.072681136           ~ 2 0
91 PCG J1617+2758 D GiG 16 17 54.11 +27 58 54.9           ~ 2 0
92 NVSS J161755+275832 rG 16 17 55.1555095872 +27 58 32.097013356           ~ 4 0
93 PCG J1617+2758 C GiG 16 17 55.64 +27 58 41.2           ~ 2 0
94 PCG J1704+2818 D GiG 17 04 56.59 +28 18 50.6           ~ 2 0
95 PCG J1704+2818 CGG 17 04 57.00 +28 18 34.0           ~ 3 0
96 2MASX J17045727+2818337 GiG 17 04 57.2864107104 +28 18 33.888274020           ~ 2 0
97 PCG J1704+2818 B GiG 17 04 58.02 +28 18 09.3           ~ 2 0
98 2MASX J17045969+2818427 GiG 17 04 59.700 +28 18 42.75           ~ 2 0
99 NGC 7507 GiG 23 12 07.595 -28 32 22.70   11.60   9.98   ~ 171 0

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2022.10.01-12:54:52

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