1994A&A...290..725P

Query : 1994A&A...290..725P

1994A&A...290..725P - Astronomy and Astrophysics, volume 290725-752 (1994/10-3)

Optical observations of a ROSAT sample of clusters of galaxies. I. Techniques and X-ray/optical analysis.

PIERRE M., BOEHRINGER H., EBELING H., VOGES W., SCHUECKER P., CRUDDACE R. and MacGILLIVRAY H.

Abstract (from CDS):

The applications of clusters of galaxies to cosmology are multiple and currently of special importance; it is thus of great interest to construct large unbiased samples. We present here the first results from optical follow-up observations of a ROSAT subsample of 42 clusters of galaxies in a contiguous area covering about 1700 square degrees. The general detection and selection procedures from the ROSAT All-Sky Survey adopted for clusters are described in detail. Further optical identifications of the cluster candidates and the measurement of their redshifts at the 3.6m ESO Telescope are presented. Various optical/X-ray correlations are investigated. Special care is given to the study of the significance of the observed cluster X-ray morphologies. X-ray contour plots for all clusters are shown, and for 31 objects, overlays on top of CCD images are presented in order to outline the correlation between optical and X-ray morphologies in detail and to flag possible contamination by unrelated point-like objects.

Abstract Copyright: ∼

Journal keyword(s): methods: data analysis - galaxies: clusters of - galaxies: distances and redshifts - X-rays: galaxies

Simbad objects: 43

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Number of rows : 43
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 MCXC J1013.5-1350 ClG 10 13 39.3657 -13 50 50.509           ~ 14 0
2 ACO 970 ClG 10 17 34.3 -10 42 01           ~ 93 0
3 ACO 3444 ClG 10 23 53.1540 -27 15 07.840           ~ 97 0
4 ACO 1023 ClG 10 27 58.8 -06 47 54           ~ 20 0
5 1AXG J103139-2606 ClG 10 31 37.7 -26 07 25           ~ 9 0
6 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 905 1
7 ACO 1069 ClG 10 39 54.3 -08 36 40           ~ 116 1
8 RXC J1041.5-1123 ClG 10 41 34.2 -11 23 19           ~ 6 0
9 ACO 1084 ClG 10 44 37.1 -07 04 47           ~ 78 0
10 RX J1046.8-2535 BLL 10 46 51.4790946960 -25 35 45.973237416       18.3   ~ 43 0
11 NAME NGC 3411 Group GrG 10 50 26.9 -12 50 26           ~ 50 0
12 ACO 1111 ClG 10 50 36.48 -02 36 16.1           ~ 29 0
13 ACO 1146 ClG 11 01 20.6 -22 43 08           ~ 104 0
14 PMN J1103-2329 BLL 11 03 37.6150845072 -23 29 31.203773520   17.00 16.55 16.61   ~ 405 1
15 RX J1105.4-2104 ClG 11 05 27.6 -21 05 07           ~ 3 0
16 HE 1115-1735 QSO 11 18 10.6833395784 -17 51 59.356627416   16.29 16.14 16.13   ~ 25 0
17 ACO 1285 ClG 11 30 25.4 -14 33 33           ~ 66 0
18 ACO 1300 ClG 11 32 00.7 -19 53 34           ~ 168 0
19 RX J1135.4-1102 X 11 35 24.2 -11 02 19           ~ 3 0
20 ACO 1348 ClG 11 41 24.0 -12 16 00           ~ 70 0
21 ACO 3490 ClG 11 45 19.6 -34 25 59           ~ 55 1
22 ACO 1391 ClG 11 49 47.2581 -12 17 47.653           ~ 41 0
23 MCXC J1151.6-1619 ClG 11 51 36.0 -16 19 00           ~ 10 0
24 ACO S 700 ClG 12 36 41.8 -33 55 01           ~ 33 0
25 ACO 3526 ClG 12 48 49.2 -41 18 17           ~ 1154 2
26 MCXC J1252.5-3116 ClG 12 52 34.93 -31 15 56.8           ~ 25 0
27 ACO 3528 ClG 12 54 18.2 -29 01 16           ~ 166 1
28 ESO 443-4 rG 12 54 22.2141014424 -29 00 46.515592764   14.53   12.93 13.62 ~ 49 1
29 MCG-05-31-001 BiC 12 54 41.005 -29 13 39.74   14.47   12.75   ~ 52 1
30 ACO 1644 ClG 12 57 11.6 -17 24 34           ~ 391 1
31 ACO 3532 ClG 12 57 19.2 -30 22 13           ~ 185 2
32 ACO 1648 ClG 12 59 00 -26 37.2           ~ 29 0
33 ACO 3541 ClG 13 03 41.8 -24 15 06           ~ 26 0
34 RX J1315.0-4236 BLL 13 15 03.3912307368 -42 36 49.760844084   18.07   16.59   ~ 114 0
35 ACO 1732 ClG 13 25 00 -20 13.6           ~ 25 0
36 ACO 1736 ClG 13 26 52.1 -27 06 33           ~ 268 2
37 ACO 3558 ClG 13 28 03.2 -31 31 35           ~ 476 2
38 RX J1331.4-3147 X 13 31 27.4 -31 48 12           ~ 2 0
39 RX J1332.2-3303 ClG 13 32 01.3 -33 03 51           ~ 4 0
40 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 337 1
41 ACO 1757 ClG 13 33 40.8403 -23 18 15.029           ~ 32 1
42 ACO 3571 ClG 13 47 32.4 -32 50 12           ~ 308 2
43 NAME IC 4329 Group GrG 13 48 36.4 -30 30 13           ~ 147 2

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