1999A&A...351..413M


Query : 1999A&A...351..413M

1999A&A...351..413M - Astronomy and Astrophysics, volume 351, 413-432 (1999/11-2)

The giant luminous arc statistics. II. Spherical lens models based on ROSAT HRI data.

MOLIKAWA K., HATTORI M., KNEIB J.-P. and YAMASHITA K.

Abstract (from CDS):

We present ROSAT HRI X-ray observations of all the galaxy clusters in the Le Fevre et al. arc survey sample in order to study the spatial distribution of the intra-cluster medium (ICM), and examine the expected number of giant luminous arcs for the sample using two spherically symmetric lens models constrained by our X-ray data. Isothermal β model assumes that the ICM is isothermal and is in the hydrostatic equilibrium. ENF98-NFW model assumes that the `universal' dark matter halo profile proposed by Navarro, Frenk & White (INFW) is a valid description of the underlying dark matter distribution. Adopting the result of N-body/gas-dynamical simulations by Eke et al. dark matter distribution in the ENF98-NFW model can be constrained by the X-ray surface brightness distribution of the ICM. The expected number of giant luminous arcs in the sample is then calculated taking into account both detection conditions in the arc survey and the evolution of source galaxies. We find that the isothermal β model cannot reproduce the observed number of giant luminous arcs even allowing uncertainties in the source galaxy model. The ENF98-NFW model displays good agreement in number of giant luminous arcs. However, some clusters have their virial temperature 3-4 times higher than their X-ray temperature obtained from spectral data or from the LX-T relation. Thus, we conclude that both spherical models which are consistent with all the available X-ray data cannot reproduce the observed number of giant luminous arcs in the sample. To solve this discrepancy we believe that the giant luminous arc statistics will need to take properly into account `irregularity' in the mass distribution in each cluster.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: general - galaxies: statistics - cosmology: observations - cosmology: gravitational lensing - X-rays: galaxies

Simbad objects: 23

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Number of rows : 23
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 QSO B0015+162 QSO 00 18 31.9990789848 +16 29 25.835460180   19 18.26 18.40   ~ 38 0
2 ClG 0016+16 ClG 00 18 33.3 +16 26 36           ~ 486 0
3 ClG 0303+1658 ClG 03 05 31.6 +17 10 02     20.13     ~ 90 0
4 ACO S 400 ClG 03 55 33.29 -36 34 18.5           ~ 37 0
5 ACO 520 ClG 04 54 19.0 +02 56 49           ~ 406 0
6 ZwCl 0735+7421 ClG 07 41 40.3 +74 14 58     17.70     ~ 236 0
7 ZwCl 1006+1201 ClG 10 08 47.1 +11 47 55     18.0     ~ 66 0
8 ClG 1008-12 ClG 10 10 34.1 -12 39 48     18.0     ~ 150 0
9 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1421 0
10 ClG 1224+20 ClG 12 27 14.9 +19 51 06   19.0       ~ 93 0
11 M 60 GiP 12 43 39.9708251928 +11 33 09.688174056   10.3       ~ 1302 1
12 2E 3105 ClG 13 35 48.7 +17 09 53     19.9     ~ 20 0
13 PB 4007 Sy1 13 36 02.0092074528 +17 25 13.092799188   16.50 16.33     ~ 85 0
14 2MASS J13590364+6212407 Sy1 13 59 03.6332309280 +62 12 40.859657172   17.88 17.57     ~ 15 0
15 ZwCl 1358+6245 ClG 13 59 54.3 +62 30 36     18.5     ~ 354 0
16 ZwCl 1455+2232 ClG 14 57 15.2 +22 20 30     18.62     ~ 274 0
17 ClG J1514+3636 ClG 15 14 22.0 +36 36 22     19.0     ~ 136 0
18 4C 37.43 Sy1 15 14 43.0683049560 +36 50 50.355436776   17.11 17.01 15.83   ~ 387 1
19 HD 135657 ** 15 15 03.2500161411 +36 49 48.724120041           F5 30 0
20 ClG 1621+26 ClG 16 23 35.7 +26 33 50           G0V 136 0
21 ClG 1910+6736 ClG 19 10 31.2 +67 41 28     19.0     ~ 36 0
22 ClG 2053-04 ClG 20 56 21.2 -04 37 46   21.0       ~ 163 0
23 ClG 2137-2353 ClG 21 40 12.8 -23 39 27     18.5     ~ 361 0

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2022.07.02-01:56:37

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