Boxiness in elliptical galaxies

Details Boxiness in elliptical galaxies Boxiness in elliptical galaxies

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...215..266n&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 215, no. 2, May 1989, p. 266-271.

Astronomy and Astrophysics

Astrophysics

96

Elliptical Galaxies, Galactic Structure, Isophotes, Galactic Bulge, Galactic Evolution

Scientific paper

Systematic departures from the ellipticity of isophote shapes are investigated for a sample of 34 boxy E galaxies. Twenty of the objects are found to be purely boxy massive Es, with the boxiness likely to be due to merging processes or various types of interactions. Three of the objects are purely boxy low-mass companions to massive galaxies, with the boxiness probably being related to the interaction with the massive neighbor via tidal stripping of the disk or tidal torques. Seven of the objects, boxy disk Es with inner disks and outer boxiness, present no sign of merging signatures. The results support the previous suggestion that two classes of E galaxies exist, disk Es and merger products.

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