Investigation of a candidate string-lensing field

Details Investigation of a candidate string-lensing field Investigation of a candidate string-lensing field

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...360l...7h&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 360, Sept. 1, 1990, p. L7-L10.

Astronomy and Astrophysics

Astronomy

15

Astronomical Spectroscopy, Gravitational Lenses, Interacting Galaxies, String Theory, Emission Spectra, Galactic Structure, Radio Sources (Astronomy)

Scientific paper

The results of deep imaging and spectroscopy of a candidate cosmic string-lensing field are reported. Comparisons with comparably deep reference fields and binary galaxy studies reported in the literature show this field to posses an anomalously high number of similar galaxy pairs with characteristic separations between 1 and 3 arcsec. Four additional pairs, identified on the basis of deep images taken in B and I using both magnitude and color criteria, are presented. Improved spectra for the three brightest original pairs show that kinematic differences between members of pairs are less than about 100 km/s, and the emission-line gas inpair C, now clearly resolved, also appears 'twinlike'.

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