NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-19 T13:13:37 PDT
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For refcode 1997PASP..109.1251C:
Retrieve 43 NED objects in this reference.
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Copyright by Astronomical Society of the Pacific. Reproduced by permission
1997PASP..109.1251C The Symmetry, Color, and Morphology of Galaxies CHRISTOPHER J. CONSELICE Department of Astronomy and Astrophysics, University of Chicago, 5640 S. Ellis Avenue, Chicago, Illinois 60637, Electronic mail: chrisOastro.wisc.edu Received 1997 April 21; accepted 1997 September 2 ABSTRACT. The structural symmetry of 43 face-on galaxy images in the R (650 nm) and J (450 nm) bands are measured to determine the usefulness of symmetry as a morphological parameter. Each galaxy image is rotated by 180^deg^ and subtracted from the original to obtain a quantitative value for its structural symmetry. The symmetry numbers computed for the sample are then compared with RC3 morphological types, color, and absolute blue magnitudes. A strong correlation between color and symmetry is found, and the RC3 Hubble sequence is found to be one of increasing asymmetry. The use of symmetry as a morphological parameter, and the possible causes of the asymmetries are discussed.
Retrieve 43 NED objects in this reference.
Please click here for ADS abstract

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