Chandra Observations of the Gravitational Potential Structure in Abell 1060

Details Chandra Observations of the Gravitational Potential Structure in Abell 1060 Chandra Observations of the Gravitational Potential Structure in Abell 1060

2002-03-15

arxiv.org/abs/astro-ph/0203244v1

Astronomy and Astrophysics

Astrophysics

4 pages, 5 figures (including color), To appear in the Proceedings of the Symposium on `New Visions of the X-ray Universe in t

Scientific paper

We present results from a Chandra observation of Abell 1060, the nearby cluster of galaxies. The ACIS-I image shows that the central cusp-like structure, previously seen from PSPC, is caused mainly by an emission from the central elliptical galaxy NGC 3311. We confirmed that the central region is remarkably isothermal with a temperature of 3.2 keV, based on the spectral fits for fine pixels. An extended region in the northeast of NGC 3311 indicates high iron abundance. The surface brightness profile excluding the central galaxy, NGC 3311, can be fitted only by a double beta model, with core radii about 40 and 140 kpc, out to a radius of about 200 kpc. This suggests that the gravitational potential in Abell 1060 consists of 2 components.

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