Isophote shapes of elliptical galaxies. I - The data

Details Isophote shapes of elliptical galaxies. I - The data Isophote shapes of elliptical galaxies. I - The data

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26as...74..385b&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 74, no. 3, Sept. 1988, p. 385-426.

Astronomy and Astrophysics

Astrophysics

190

Astronomical Photometry, Charge Coupled Devices, Elliptical Galaxies, Galactic Structure, Radio Emission, Fourier Transformation, Morphology, Statistical Analysis, X Ray Sources

Scientific paper

CCD surface-photometry was carried out for 69 bright elliptical galaxies in the Cousins V, R, I system. This sample contains nearly all elliptical galaxies brighter than BT = 12.4 mag and north of δ = -10° (47 objects), as well as 22 additional objects selected mostly because of X-ray or radio emission. The data were used to obtain the radial dependence of the surface brightness, ellipticity and major-axis position-angle for each galaxy. The deviations of the isophotes from pure ellipses were analysed for systematic components by means of Fourier transforms. 80% of the galaxies show systematic deviations larger than 0.2% in units of the semimajor axis length. Generally the deviations appear in the form of box-shaped or disk-shaped components.

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