2000MNRAS.319..933H

Query : 2000MNRAS.319..933H

2000MNRAS.319..933H - Mon. Not. R. Astron. Soc., 319, 933-938 (2000/December-2)

Are X-ray properties of loose groups different from those of compact groups?.

HELSDON S.F. and PONMAN T.J.

Abstract (from CDS):

We compare the X-ray properties of loose and compact galaxy groups, using a combined sample of 42 groups. We find that we are unable to separate loose and compact groups on the luminosity-temperature relation, the luminosity-velocity dispersion relation or the velocity dispersion-temperature relation using equally weighted errors. This suggests that the distinction between compact and loose groups is not a fundamental one, and we argue that a more useful distinction is that between X-ray bright and X-ray faint systems.

Given their similarity in X-ray properties, we combine the loose and compact subsamples to derive relations based on the full sample. This provides the highest statistical quality results to date on the way in which the correlations in X-ray properties of low-mass systems depart from those seen in rich clusters.


Abstract Copyright: 2000, Royal Astronomical Society

Journal keyword(s): intergalactic medium - X-rays: galaxies

Simbad objects: 42

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Number of rows : 42
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 NAME PSC CL ClG 00 58 25.0 +30 39 11           ~ 131 1
2 NAME NGC 383 Group GrG 01 07 27.7 +32 23 59   11.1 14.1     ~ 85 0
3 NAME NGC 524 Group GrG 01 24 01.6 +09 27 37   11.2       ~ 34 0
4 NAME NGC 533 Group GrG 01 25 29.1 +01 48 17           ~ 57 0
5 HCG 12 CGG 01 27 33.7 -04 40 14           ~ 40 0
6 NAME NGC 741 Group GrG 01 56 22 +05 37.6     14.3     ~ 54 0
7 HCG 15 CGG 02 07 39.0 +02 08 18           ~ 75 0
8 HCG 16 CGG 02 09 40.82 -10 11 02.0           ~ 175 0
9 NAME NGC 1587 Group GrG 04 30 46.1 +00 24 25   12.1       ~ 21 0
10 NVSS J051047+180112 rG 05 10 47.6159490978 +18 01 10.809757323   16.89   13.69   ~ 53 1
11 NAME NGC 2563 Group GrG 08 20 39.46 +21 04 45.6           ~ 41 0
12 HCG 35 CGG 08 45 20.71 +44 32 23.1           ~ 43 0
13 HCG 37 CGG 09 13 35.6 +30 00 51           ~ 65 0
14 HCG 42 CGG 10 00 13.1 -19 38 24           ~ 100 0
15 HCG 48 CGG 10 37 45.6 -27 04 50           ~ 58 0
16 NAME NGC 3607 Group GrG 11 17 55.9 +18 07 35   9.9       ~ 57 0
17 HCG 51 CGG 11 22 21.6 +24 19 41   14.9       ~ 86 0
18 NAME NGC 3665 Group GrG 11 23 30.6 +38 43 31   11.2       ~ 26 1
19 HCG 57 CGG 11 37 50.5 +21 59 06     15.4     ~ 87 1
20 HCG 58 CGG 11 42 09.4 +10 16 30   11.8 13.68     ~ 82 1
21 NAME NGC 4065 Group GrG 12 04 04.94 +20 14 48.4   12.2       ~ 29 0
22 NAME NGC 4073 Group GrG 12 04 44.08 +01 48 40.9     13.53     ~ 292 0
23 NAME NGC 4261 Group GrG 12 20 02.3 +05 20 24     12.9     ~ 43 0
24 NAME NGC 4325 Group GrG 12 23 18.2 +10 37 19           ~ 55 0
25 NAME NGC 4636 Group GrG 12 42 49.5 +02 41 08           ~ 570 0
26 HCG 62 CGG 12 53 05.6 -09 12 21           ~ 313 0
27 NAME NGC 5129 Group GrG 13 24 36.0 +13 55 40           ~ 38 0
28 NAME NGC 5171 Group GrG 13 29 05.10 +11 45 04.8     4.7     ~ 78 0
29 HCG 67 CGG 13 49 03.5 -07 12 20           ~ 53 0
30 HCG 68 CGG 13 53 40.9 +40 19 07     12.4     ~ 114 0
31 HCG 73 CGG 15 02 40.1 +23 21 13           ~ 26 0
32 NAME NGC 5846 Group GrG 15 05 47.0 +01 34 25           ~ 165 0
33 HCG 82 CGG 16 28 22.1 +32 49 25     18.72     ~ 38 0
34 HCG 83 CGG 16 35 40.9 +06 16 12           ~ 22 0
35 NAME NGC 6338 Group GrG 17 15 32.47 +57 25 19.0           ~ 95 0
36 HCG 85 CGG 18 50 04.60 +73 20 27.8           ~ 30 0
37 HCG 86 CGG 19 51 59.2 -30 49 34           ~ 37 0
38 HCG 90 CGG 22 02 06.3 -31 55 48           ~ 133 0
39 NAME Stephan's Quintet CGG 22 35 57.5 +33 57 36           ~ 480 1
40 NAME NGC 7619 Group GrG 23 20 32.1 +08 22 26           ~ 48 0
41 HCG 97 CGG 23 47 24.0 -02 19 08           ~ 102 0
42 NAME NGC 7777 Group GrG 23 53 33.0 +28 34 42           ~ 12 0

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