A straight gravitational image in Abell 2390 - A striking case of lensing by a cluster of galaxies

Journal Article · Tue Jan 01 04:00:00 EST 1991 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/169574· OSTI ID:6104233

Pello, R; Sanahuja, B; Le Borgne, J; Soucail, G; Mellier, Y ^[1]

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1. Barcelona Universidad (Spain) Observatoire Midi-Pyrenees, Toulouse (France)

Photometry and spectroscopy are presented for a very linear arclike object found in the center of the rich cluster of galaxies Abell 2390 (z = 0.231). The main feature in its spectrum is an emission line at 7130 A that exists all along the arc. The identification of this emission line as Forbidden O II (3727 A) leads to a redshift of 0.913 for the structure. This is the third arc candidate confirmed spectroscopically as a gravitationally lensed background galaxy. 27 refs.

• OSTI ID: 6104233
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 366; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
EMISSION SPECTRA
GALACTIC EVOLUTION
GALAXIES
GALAXY CLUSTERS
GRAVITATIONAL LENSES
IMAGES
LENSES
LUMINOSITY
MORPHOLOGY
OPTICAL PROPERTIES
PHOTOMETRY
PHYSICAL PROPERTIES
RED SHIFT
SPECTRA
SPECTROSCOPY