2015A&A...573A..75B


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.19CET17:15:47

2015A&A...573A..75B - Astronomy and Astrophysics, volume 573A, 75-75 (2015/1-1)

Extending the LX - T relation from clusters to groups. Impact of cool core nature, AGN feedback, and selection effects.

BHARADWAJ V., REIPRICH T.H., LOVISARI L. and ECKMILLER H.J.

Abstract (from CDS):

We aim to investigate the bolometric LX-T relation for galaxy groups, and to study the impact of gas cooling, feedback from super-massive black holes, and the selection effects on it.With a sample of 26 galaxy groups, we obtained the best-fit LX-T relation for five different cases depending on the intracluster medium (ICM) core properties and central active galactic nuclei (AGN) radio emission, and determined the slopes, normalisations, and intrinsic and statistical scatters for both temperature and luminosity. We undertook simulations to correct for selection effects (e.g. Malmquist bias) and compared the bias-corrected relations for groups and clusters.The slope of the bias-corrected LX-T relation is marginally steeper, but consistent with clusters (∼3). Groups with a central cooling time of less than 1Gyr (SCC groups) show indications of having the steepest slope and the highest normalisation. For the groups, the bias-corrected intrinsic scatter in LX is larger than the observed scatter for most cases, and this is reported here for the first time. We see indications that the groups with an extended central radio source (CRS) have a much steeper slope than those groups that have a CRS with only core emission. Additionally, we see indications that the more powerful radio AGN are preferentially located in non strong cool core (NSCC) groups rather than strong cool core (SCC) groups.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: intracluster medium - galaxies: groups: general - X-rays: galaxies: clusters

CDS comments: Table 1 : ESO 55, RCX J1022, RXC J2214, SS2B not identified (incomplete format).

Simbad objects: 25

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Number of rows : 25

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME NGC 326 Group GrG 00 58 22.3 +26 52 04           ~ 6 0
2 ACO 2877 ClG 01 09 49.3 -45 54 02           ~ 134 2
3 IC 1633 BiC 01 09 55.599 -45 55 52.38   12.23       ~ 80 3
4 ACO 160 ClG 01 12 59.572 +15 29 28.65           ~ 160 0
5 NAME NGC 507 Group GrG 01 23.7 +33 15           ~ 73 0
6 NAME NGC 533 Group GrG 01 25 29.1 +01 48 17           ~ 56 0
7 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 647 1
8 NGC 777 Sy2 02 00 14.934 +31 25 45.78 13.09 12.49 11.45     ~ 151 2
9 NAME NGC 1132 Group GrG 02 52 51.8 -01 16 29           ~ 5 0
10 NAME NGC 1550 Group ClG 04 19 38.0 +02 24 36           ~ 38 0
11 ACO S 463 ClG 04 29 13.4 -53 44 02           ~ 46 0
12 ACO 1177 ClG 11 09 27 +21 41.7           ~ 90 1
13 NAME NGC 4073 Group GrG 12 04 21.7 +01 50 19     13.53     ~ 241 0
14 NAME NGC 4325 Group GrG 12 23 18.2 +10 37 19           ~ 52 0
15 HCG 62 CGG 12 53 05.6 -09 12 21           ~ 290 0
16 NAME NGC 4936 Group ClG 13 04 -31.0           ~ 4 0
17 NAME NGC 5129 Group GrG 13 24 36.0 +13 55 40           ~ 36 0
18 NAME NGC 5419 Group GrG 14 03 -33.0           ~ 2 0
19 NAME NGC 5718 Group ClG 14 40 38.5 +03 28 20     14.31     ~ 102 0
20 NAME LHB X 16 42.0 +02 19           ~ 247 0
21 NAME NGC 6269 Group ClG 16 58 00.8 +27 51 16     14.00     ~ 53 0
22 NAME NGC 6338 Group GrG 17 15 21.4 +57 22 43           ~ 69 0
23 ZwCl 1728+4353 ClG 17 33 00.0 +43 45 00           ~ 35 0
24 NAME NGC 6482 Group ClG 17 51 47.5 +23 04 14           ~ 19 0
25 HCG 97 CGG 23 47 24.0 -02 19 08           ~ 92 0

    Equat.    Gal    SGal    Ecl

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2020.02.19-17:15:47

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