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On the Formation of Boxy and Disky Elliptical Galaxies

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1999

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10.1086/312275

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American Astronomical Society
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Naab, Thorsten, Andreas Burkert, and Lars Hernquist. 1999. “On the Formation of Boxy and Disky Elliptical Galaxies.” The Astrophysical Journal 523 (2): L133–36. https://doi.org/10.1086/312275.

Abstract

The origin of boxy and disky elliptical galaxies is investigated. The results of two collisioless N-body simulations of spiral-spiral mergers with mass ratios of 1 : 1 and 3 : 1 are discussed, and the projected properties of the merger remnants are investigated. It is shown that the equal-mass merger leads to an anisotropic, slowly rotating system with preferentially boxy isophotes and significant minor-axis rotation. The unequal-mass merger results in the formation of a rotationally supported elliptical galaxy with disky isophotes and small minor-axis rotation. The observed scatter in the kinematical and isophotal properties of both classes of elliptical galaxies can be explained by projection effects.

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http://nrs.harvard.edu/urn-3:HUL.InstRepos:41381670

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