Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.156..223m&link_type=abstract
(Instituto de Astrofisica de Canarias and Comision Interministerial de Ciencia y Tecnologia, Summer School on Evolutionary Pheno
Astronomy and Astrophysics
Astrophysics
3
Astronomical Photometry, Elliptical Galaxies, Interacting Galaxies, Brightness Distribution, Charge Coupled Devices, Luminosity
Scientific paper
The effect of galaxy interaction on the morphology of a galaxy pair was investigated using the results of CCD-photometry of 20 elliptical galaxy pairs. Deviations from undisturbed brightness profiles were interpreted in terms of ongoing tidal interaction. It was found that the morphology of the interacting galaxy pairs deviates obviously from the morphology of isolated elliptical galaxies, indicating a stage of efficient interaction, with nonconcentric isophotes providing strong evidence of ongoing interaction. Brightness profiles of the brighter components in galaxy pairs were usually extended in comparison with brightness profiles of isolated galaxies. Truncated brightness profiles, prevalent in most of the smaller components of galaxy pairs, are interpreted as a consequence of a tidally limited galaxy radius imposed by the more massive component.
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