A possible candidate of arclike structure in a southern cluster of galaxies

Details A possible candidate of arclike structure in a southern cluster of galaxies A possible candidate of arclike structure in a southern cluster of galaxies

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...334l..69g&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 334, Nov. 15, 1988, p. L69-L72.

Astronomy and Astrophysics

Astrophysics

26

Astronomical Spectroscopy, Galactic Clusters, Southern Sky, Background Radiation, Galactic Radiation, Galactic Structure, Gravitational Lenses

Scientific paper

The author reports observations of an elongated, arc-shaped structure found in a new southern rich cluster of galaxies at z = 0.316. The structure is concave toward a major cluster member and is bluer than most galaxies in the cluster. The projected image of the structure is located near a close, possibly merging or interacting pair of galaxies at z = 0.328. Three possible explanations are briefly discussed: (1) accidental superposition of objects, (2) disrupted arm or tail of an interacting pair, and (3) gravitational lensing of a background object.

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