2002ApJ...573L..13L


Query : 2002ApJ...573L..13L

2002ApJ...573L..13L - Astrophys. J., 573, L13-L17 (2002/July-1)

Chandra observations of Abell 2029: no cooling flow and a steep abundance gradient.

LEWIS A.D., STOCKE J.T. and BUOTE D.A.

Abstract (from CDS):

We have obtained high spatial resolution temperature and abundance profiles for the galaxy cluster Abell 2029 with the Chandra ACIS-S instrument. Our observations reveal that the spectra are well fitted by a single-phase gas in each annulus. While the temperature of the intracluster medium drops from ∼9 keV at 3' (260 h–170 kpc) to 3 keV in the central 5" (5 h–170 kpc) of the cluster, there is no evidence of gas emitting at temperatures below 3 keV. The addition of a cooling flow component does not improve the fits, despite previous claims for a massive cooling flow. There is also no evidence of excess absorption above the Galactic NH-value. We also observe a steep Fe abundance gradient, such that ZFe≳2 Z☉ (assuming meteoritic solar Fe abundance) in the core, consistent with significant enrichment from Fe-rich Type Ia supernovae in the cD galaxy. The Fe abundance drops to ~0.5 Z☉ at 3' (260 h–170 kpc), in good agreement with previous BeppoSAX measurements. The high-resolution image reveals neither a strong central point source nor any filamentary structure related to a cooling flow or a merger. The absence of a strong merger signature argues against the creation of the wide-angle-tailed radio source morphology in a merger event.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Cooling Flows - Galaxies: Abundances - Galaxies: Clusters: Individual: Alphanumeric: A2029 - Galaxies: Intergalactic Medium - X-Rays: Galaxies

CDS comments: 4C +06.53 = PKS 1508+059 (not 1509+49)

Simbad objects: 2

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Number of rows : 2
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 ACO 2029 ClG 15 10 54.2 +05 44 23           ~ 1020 0
2 IC 1101 rG 15 10 56.100 +05 44 41.19   15.10       ~ 165 2

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