ASCA Observations of a Near-by Cluster in Antlia

Details ASCA Observations of a Near-by Cluster in Antlia ASCA Observations of a Near-by Cluster in Antlia

Aug 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000pasj...52..623n&link_type=abstract

Publications of the Astronomical Society of Japan, v.52, p.623-630.

Astronomy and Astrophysics

Astronomy

10

Galaxies: Clusters: Individual (Abell S636), Galaxies: Individual (Ngc 3268), Galaxies: Intergalactic Medium, Icm: X-Rays, X-Rays: General

Scientific paper

The Antlia cluster is a near-by poor cluster which has a redshift of z = 0.0087. X-ray observations with ASCA have revealed that the cluster is almost isothermal in the X-ray with a temperature of kT ~ 2.0 keV. The metal abundance is Z ~ 0.35\ ZSolar , and the 0.5-10.0 keV cluster luminosity is ~ 3.4 x 1042\ h75-2 erg s-1 within r < 250\ h-175 kpc. There was no X-ray central excess brightness and little central cool component, which are frequently seen in near-by poor clusters. The Antlia cluster is the nearest poor cluster without these central features.

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