A gravitational lens cluster -- Abell 2104 -- discovered in the ROSAT All-Sky Survey sample

Details A gravitational lens cluster -- Abell 2104 -- discovered in the ROSAT All-Sky Survey sample A gravitational lens cluster -- Abell 2104 -- discovered in the ROSAT All-Sky Survey sample

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...289l..37p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 289, no. 3, p. L37-L40

Astronomy and Astrophysics

Astronomy

9

Cosmology, Dark Matter, Galactic Clusters, Gravitational Lenses, Visual Observation, X Ray Imagery, Brightness, Mass To Light Ratios, Red Shift, Rosat Mission, Sky Surveys (Astronomy), Stellar Spectrophotometry

Scientific paper

We report the discovery of a new gravitational arc in the bright X-ray cluster A2104, in the course of a photometric and spectroscopic survey of a sample of ROSAT clusters. The arc is located very close to the cluster center and appear redder than previously known giant arcs. Global cluster optical properties and detailed morphological study of the cD and the arc are presented. The X-ray emission is also analysed and a two component decomposition is suggested. The cluster morphology shows a marked preferential direction both in optical and X-rays. Implications for the cluster matter distribution are discussed.

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