X-ray and weak lensing measurements of the mass profile of MS1008.1-1224: Chandra and VLT data

Details X-ray and weak lensing measurements of the mass profile of MS1008.1-1224: Chandra and VLT data X-ray and weak lensing measurements of the mass profile of MS1008.1-1224: Chandra and VLT data

2002-12-06

arxiv.org/abs/astro-ph/0212167v1

Astron.Astrophys.398:L5,2003

Astronomy and Astrophysics

Astrophysics

5 pages. Accepted for publication in A&A Letters

Scientific paper

10.1051/0004-6361:20021804

We analyse the Chandra dataset of the galaxy cluster MS1008.1-1224 to recover an estimate of the gravitating mass as function of the radius and compare these results with the weak lensing reconstruction of the mass distribution obtained from deep FORS1-VLT multicolor imaging. Even though the X-ray morphology is disturbed with a significant excess in the northern direction suggesting that the cluster is not in a relaxed state, we are able to match the two mass profiles both in absolute value and in shape within 1 sigma uncertainty and up to 1100 h50^-1 kpc. The recovered X-ray mass estimate does not change by using either the azimuthally averaged gas density and temperature profiles or the results obtained in the northern sector alone where the signal-to-noise ratio is higher.

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