2007A&A...472..739B


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.14CET21:13:30

2007A&A...472..739B - Astronomy and Astrophysics, volume 472, 739-748 (2007/9-4)

High redshift X-ray galaxy clusters. II. The LX-T relationship revisited.

BRANCHESI M., GIOIA I.M., FANTI C. and FANTI R.

Abstract (from CDS):

In this paper we re-visit the observational relation between X-ray luminosity and temperature for high-z galaxy clusters and compare it with the local LX-T and with theoretical models. To these ends we use a sample of 17 clusters extracted from the Chandra archive supplemented with additional clusters from the literature, either observed by Chandra or XMM-Newton, to form a final sample of 39 high redshift (0.25<z<1.3) objects. Different statistical approaches are adopted to analyze the LX-T relation. The slope of the LX-T relation of high redshift clusters is steeper than expected from the self-similar model predictions and steeper, even though still compatible within the errors, than the local LX-T slope. The distant cluster LX-T relation shows a significant evolution with respect to the local Universe: high-z clusters are more luminous than the local ones by a factor ≃2 at any given temperature. The evolution with redshift of the LX-T relation cannot be described by a single power law nor by the evolution predicted by the self-similar model. We find a strong evolution, similar or stronger than the self-similar model, from z=0 to z ≤0.3 followed by a much weaker, if any, evolution at higher redshifts. The weaker evolution is compatible with non-gravitational models of structure formation. According to us a statistically significant sample of nearby clusters (z<0.25) should be observed with the current available X-ray telescopes to completely exclude observational effects due to different generation detectors and to understand this novel result.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: general - galaxies: high-redshift - cosmology: observations - galaxies: intergalactic medium - X-rays: galaxies: clusters

Simbad objects: 38

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Number of rows : 38

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 ClG 0016+16 ClG 00 18 33.3 +16 26 36           ~ 468 0
2 ZwCl 0024+1652 ClG 00 26 36.0 +17 08 36     18.35     ~ 597 1
3 ClG J0046+8530 ClG 00 46 17.83 +85 31 09.5           ~ 12 0
4 ClG J0152-1358 ClG 01 52 41.3 -13 58 13           ~ 238 3
5 ClG 0303+1658 ClG 03 05 31.6 +17 10 02     20.13     ~ 89 0
6 ClG 0451-03 ClG 04 54 10.9 -03 01 07     20.0     ~ 324 0
7 ClG J0542-4100 ClG 05 42 49.9 -40 59 58           ~ 51 0
8 ClG J0848+4453 ClG 08 48 34.800 +44 53 41.90           ~ 121 1
9 ClG J0848+4456 ClG 08 48 46.9 +44 56 22           ~ 56 1
10 ClG J0849+4452 ClG 08 48 56.3 +44 52 16           ~ 101 1
11 ClG J0910+5422 ClG 09 10 44.9 +54 22 09           ~ 84 0
12 ClG J1008+5342 ClG 10 08.7 +53 42           ~ 6 0
13 ClG 1008-12 ClG 10 10 34.1 -12 39 48     18.0     ~ 141 0
14 ClG 1054-03 ClG 10 57 00.2 -03 37 27     22     ~ 448 0
15 ClG J1103+3555 ClG 11 03 37.1 +35 55 18           ~ 8 0
16 ClG J1113-2615 ClG 11 13 05.7 -26 15 36           ~ 33 0
17 ClG J1120+2326 ClG 11 20 57.9 +23 26 41           ~ 39 0
18 ClG 1137+66 ClG 11 40 23.3 +66 09 01     21.0     ~ 134 0
19 ClG J1221+4918 ClG 12 21 25.0 +49 18 07           ~ 54 0
20 ClG J1226+3332 ClG 12 26 57.7 +33 32 50           ~ 190 0
21 ClG J1252-2927 ClG 12 52 54.4 -29 27 17           ~ 150 0
22 ClG J1317+2911 ClG 13 17 21.70 +29 11 18.1           ~ 30 0
23 ClG J1342+2828 ClG 13 42.9 +28 28           ~ 3 0
24 ClG J1350+6007 ClG 13 50 48.55 +60 07 06.7           ~ 40 0
25 3C 295 Sy2 14 11 20.467 +52 12 09.52   22.34 20.80 18.54   ~ 879 5
26 ClG J1415+3611 ClG 14 15 11.1 +36 12 03           ~ 67 1
27 ClG J1416+4446 ClG 14 16 28.1 +44 46 38           ~ 41 0
28 ClG J1429+4241 ClG 14 29 06.4 +42 41 10           ~ 22 0
29 ZwCl 1455+2232 ClG 14 57 15.2 +22 20 30     18.62     ~ 259 0
30 ClG J1524+0957 ClG 15 24 40.3 +09 57 35           ~ 55 0
31 ACO 2125 ClG 15 41 14.1 +66 15 57           ~ 118 1
32 ClG 1559+6353 ClG 15 59 10.0 +63 53 06           ~ 9 0
33 ClG 1621+26 ClG 16 23 35.7 +26 33 50           G0V 132 0
34 ClG J1641+4001 ClG 16 41 52.3 +40 01 29           ~ 36 0
35 ClG J1701+6414 ClG 17 01 22.6 +64 14 09           ~ 63 0
36 ClG J1716+6708 ClG 17 16 49.6 +67 08 30           ~ 112 0
37 ClG 2053-04 ClG 20 56 21.2 -04 37 46   21.0       ~ 160 0
38 ClG J2302+0844 ClG 23 02 48.1 +08 43 50           ~ 39 0

    Equat.    Gal    SGal    Ecl

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2019.11.14-21:13:30

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