Surface photometry of shell galaxies

Details Surface photometry of shell galaxies Surface photometry of shell galaxies

Jul 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...306..110f&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 306, July 1, 1986, p. 110-121.

Astronomy and Astrophysics

Astrophysics

58

Astronomical Photometry, Elliptical Galaxies, Galactic Structure, Charge Coupled Devices, Galactic Nuclei

Scientific paper

CCD surface photometry in four passbands of shells around three bright elliptical galaxies, NGC 2865, NGC 3923, and NGC 5018, is presented. Colors, profiles across the shells, and the precise geometry of the shells are determined. The observations all favor a merger process as the origin of the shells, and the colors are consistent with those of a recently accreted small galaxy. The characteristic thicknesses of the shells are of order 10 percent or less of their distance from the center of the galaxy.

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