2004A&A...420..833X


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.26CET03:02:58

2004A&A...420..833X - Astronomy and Astrophysics, volume 420, 833-845 (2004/6-4)

An XMM-Newton study of the RGH 80 galaxy group.

XUE Y.-J., BOEHRINGER H. and MATSUSHITA K.

Abstract (from CDS):

We present an X-ray study of the galaxy group RGH 80, observed by XMM-Newton. The X-ray emission of the gas is detected out to ∼462h–150kpc, corresponding to ∼0.45r200. The group is relatively gas rich and luminous with respect to its temperature of 1.01±0.01keV. Using the deprojected spectral analysis, we find that the temperature peaks at ∼1.3keV around 0.11r200, and then decreases inwards to 0.83keV at the center and outwards to ∼70% of the peak value at large radii. Within the central ∼60kpc of the group where the gas cooling time is less than the Hubble time, a two-temperature model with temperatures of 0.82 and 1.51keV and the Galactic absorption gives the best fit of the spectra, with ∼20% volume occupied by the cool component. We also derive the gas entropy distribution, which is consistent with the prediction of cooling and/or internal heating models. Furthermore, the abundances of O, Mg, Si, S and Fe decrease monotonically with radius. With the observed abundance ratio pattern, we estimate that ∼85% or ∼72% of the iron mass is contributed by SN Ia, depending on the adopted SN II models.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: individual: RGH 80 - X-rays: galaxies: clusters

Simbad objects: 9

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Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 ACO S 373 ClG 03 38 30 -35 27.3           ~ 1588 0
2 NAME NGC 1550 Group ClG 04 19 38.0 +02 24 36           ~ 39 0
3 NAME NGC 2300 Group GrG 07 32 22.84 +85 42 26.3           ~ 51 0
4 NAME NGC 2563 Group GrG 08 20 24.4 +21 05 46           ~ 39 0
5 NAME NGC 4073 Group GrG 12 04 21.7 +01 50 19     13.53     ~ 248 0
6 NAME NGC 4325 Group GrG 12 23 18.2 +10 37 19           ~ 52 0
7 NAME NGC 5044 Group GrG 13 14 22.7 -16 32 04           ~ 172 0
8 NAME NGC 5098 Group GrG 13 20 15.4 +33 08 30           ~ 56 0
9 BAX 241.2375+23.9206 ClG 16 04 57.0 +23 55 14     14.38     ~ 124 0

    Equat.    Gal    SGal    Ecl

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2021.02.26-03:02:58

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